Jurnal Teknologi Lingkungan https://ejournal.brin.go.id/JTL <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <div id="main-content" class="page page_about"><nav class="cmp_breadcrumbs" role="navigation" aria-label="You are here:"></nav> <div id="aboutPeople"> <p style="text-align: justify;"><strong>Jurnal Teknologi Lingkungan (JTL)</strong> is an accredited <strong><a title="SINTA JTL" href="https://sinta.kemdikbud.go.id/journals/detail?id=2014" target="_blank" rel="noopener">Sinta 2</a></strong> (established on 23 December 2020, <strong>valid until Volume 26.1 January 2025</strong>) journal which is published twice a year in January and July. JTL is a scientific journal that publishes scientific research papers and ideas in the field of environmental science, environmental technology and other fields related to environmental issues. This journal is published by BRIN Publishing (<em>Penerbit BRIN</em>) and managed by Research Organization for Life Sciences and Environment, National Research and Innovation Agency (BRIN). JTL only accepts original scientific research works (not a review) that have not been published by other medias. All incoming articles will be reviewed in advance by competent reviewers before being eligible for publication.</p> <p style="text-align: justify;">Authors are invited to electronically <a title="Register-Submit" href="https://drive.google.com/file/d/1vppwhIlt6KTA55-uzRakQmzyJqUY2HKF/view?usp=sharing" target="_blank" rel="noopener">submit</a> through Journal Website no more than 10 pages of a full paper. 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Joko Prayitno Susanto, M.Eng.) jtl@brin.go.id (JTL Admin) Wed, 31 Jan 2024 22:01:29 +0700 OJS 3.3.0.11 http://blogs.law.harvard.edu/tech/rss 60 Assessing the Environmental Footprint: A Life Cycle Assessment of Greenhouse Gas Emissions from Energy Consumption in 3 and 4-Star Hotels in Pontianak, West Kalimantan https://ejournal.brin.go.id/JTL/article/view/964 <p><em>Persebaran usaha penginapan di Indonesia hingga tahun 2021 terus meningkat, di mana 48,95% merupakan hotel berbintang. Pada operasionalnya, hotel memerlukan energi dari berbagai jenis bahan bakar yang menghasilkan emisi berupa gas rumah kaca. Studi ini dilakukan pada kasus di Hotel X (bintang 4) dan Hotel Y (bintang 3) di Kota Pontianak, Kalimantan Barat yang menggunakan energi dari batubara, gas alam cair, dan bahan bakar minyak. Tujuan penelitian ini adalah untuk menganalisis dampak lingkungan dari gas rumah kaca menggunakan metode analisis daur hidup. Data inventori dilakukan terhadap jenis sumber energi, jumlah alat, dan lama penggunaan pada tiap fasilitas yang tersedia di hotel. Aplikasi OpenLCA 1.11.0 dan database CML-IA baseline digunakan untuk menganalisis dampak lingkungan yang dihasilkan. Kategori dampak yang dianalisis yaitu potensi dampak pemanasan global, penipisan abiotik, dan potensi oksidasi fotokimia. Dampak lingkungan terhadap pandemik COVID-19 dan strategi manajemen gas rumah kaca juga didiskusikan. Hasil penelitian menunjukkan bahwa jumlah tamu, fasilitas dan jenis bangunan berpengaruh pada emisi yang dihasilkan. Jumlah tamu pada tahun 2020 merupakan jumlah terkecil dibandingkan tahun 2019 dan 2021, yang sejalan dengan jumlah konsumsi energinya. Jumlah fasilitas pada Hotel X yang lebih banyak dibandingkan Hotel Y juga menyebabkan Hotel X menghasilkan lebih banyak emisi dibandingkan Hotel Y. Rekomendasi dari penelitian ini berupa perencanaan strategi pengelolaan konsumsi energi yang lebih baik, terutama pada penggunaan lampu dan pendingin ruangan. Untuk mengurangi konsumsi energi dari penggunaan alat tersebut dapat diterapkan sistem sensor untuk aktivasi listrik, serta penggunaan elektronik dengan daya yang lebih rendah. Diharapkan hasil riset ini dapat memberikan solusi bagi perencanaan strategi pengelolaan energi yang berkelanjutan di hotel berbintang dan diperlukan inventarisasi detail untuk mengetahui dampak lingkungannya secara komprehensif.</em></p> <p> </p> <p><strong>Abstract</strong></p> <p>The distribution of Indonesia lodging businesses in 2021 has been continuously increase, with 48.95% being star-rated hotels. In their operations, hotels require energy from various types of fuels that produce emissions in the form of Greenhouse Gases. This study was conducted on the cases of X Hotel (4-star) and Y Hotel (3-star) in Pontianak, West Kalimantan, which utilize energy from coal, liquefied natural gas, and oil fuels. The research objective is to analyze the environmental impact of greenhouse gases using the life cycle analysis method. Inventory data were collected for the types of energy sources, the number of appliances, and the duration of usage for each facility available in the hotels. OpenLCA 1.11.0 application and CML-IA baseline database were employed to analyze the resulting environmental impact. The impact categories analyzed include the global warming potential, abiotic depletion, and photochemical oxidation potential. The environmental impact of the Covid-19 pandemic and greenhouse gas management strategies are also discussed. The research results indicate that the number of guests, facilities, and building types influence the emissions produced. The number of guests in 2020 was the smallest compared to 2019 and 2021, correlating with the energy consumption. The higher number of facilities in X Hotel compared to Y Hotel also results in X Hotel producing more emissions than Y Hotel. Recommendations from this research include better planning for energy consumption management strategies, especially in the use of lighting and room cooling. To reduce energy consumption from lighting and air conditioning, the implementation of sensor systems for electrical activation and the use of electronic devices with lower power consumption can be applied. It is hoped that the findings of this research can provide solutions for sustainable energy consumption management strategies in star-rated hotels, and a more detailed inventory is needed to comprehensively understand its environmental impact.</p> Raysa Khoirun Nisa, Eko Haryono, Langgeng Wahyu Santosa Copyright (c) 2024 Raysa Khoirun Nisa, Eko Haryono, Langgeng Wahyu Santosa https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/964 Wed, 31 Jan 2024 00:00:00 +0700 How Important is the Life Cycle Assessment (LCA) Study of Plastic Waste? Use of Bibliometric Analysis to Reveal Research Positions and Future Directions https://ejournal.brin.go.id/JTL/article/view/2001 <p><em>Timbulan dan pembuangan sampah plastik menjadi masalah global yang semakin rumit dan perlu diatasi. Studi ini bertujuan untuk melakukan analisis bibliometrik dari penilaian siklus hidup (LCA) tentang sampah plastik. Data dari tahun 2013 hingga 2022 dikumpulkan dari Scopus dan Web of Science. Data yang telah dikumpulkan kemudian digabungkan dan dihapus duplikasinya menggunakan R v.4.2.3 dan R studio v.3.8.6. Setelah itu, data dianalisis dan divisualisasikan dengan bantuan Biblioshiny. Data yang dianalisis meliputi publikasi tahunan artikel ilmiah, kontribusi berdasarkan negara, kata kunci yang relevan berdasarkan peta pohon, pola pertumbuhan penelitian, pengelompokan topik, posisi penelitian berdasarkan peta tematik, dan peta struktur konseptual dalam cakupan kata kunci terkait. Tren publikasi tahunan menunjukkan pertumbuhan substansial dari 30 artikel pada tahun 2013 menjadi 631 artikel pada tahun 2022, yang menandakan kesadaran dan perhatian terhadap permasalahan sampah plastik. Tiongkok, Amerika Serikat, dan Italia memimpin publikasi tahunan sekaligus sebagai negara-negara yang paling banyak dikutip artikel-artikelnya, mengingat status mereka sebagai produsen plastik terbesar di dunia. Kata kunci yang paling relevan dari peta pohon juga ditampilkan adanya integrasi yang kuat antara upaya daur ulang plastik dan LCA dalam pengelolaan dampak lingkungan dengan kata kunci yang menonjol antara lain daur ulang, LCA, pengelolaan sampah, sampah plastik, dampak lingkungan, dan ekonomi sirkular. Studi ini pada akhirnya memberikan wawasan mendalam mengenai posisi penelitian dan arah masa depan terkait studi LCA tentang sampah plastik, yang semakin meningkat karena pentingnya pengelolaan sampah plastik berkelanjutan. Kajian ilmiah dalam bidang ini diharapkan terus berkembang untuk mendukung kesadaran dan komitmen seluruh pemangku kepentingan dalam mengatasi permasalahan sampah plastik di seluruh dunia.</em></p> <p> </p> <p><strong>Abstract</strong></p> <p>The generation and disposal of plastic waste become an increasingly complicated global concern that needs to be overcome. This study aims to conduct a bibliometric analysis of life cycle assessment (LCA) studies on plastic waste. Data from 2013 to 2022 were collected from Scopus and Web of Science. Collected data were merged and deduplicated using R v.4.2.3 and R studio v.3.8.6. Afterward, data were analyzed and visualized by Biblioshiny. The analyzed data encompass scientific production output, contributions by country, relevant keywords by tree map, research growth pattern, topic clustering, research position by thematic map, and conceptual structure map within this scope. The annual publications trend denotes a substantial growth from 30 articles in 2013 to 631 articles in 2022, signifying awareness and attention towards plastic waste issues. China, the United States, and Italy have led annual publications as well as the most cited countries, given their status as the world’s largest plastic producers. The most relevant keywords from the tree map also show a strong integration between plastic recycling efforts and LCA in managing the environmental impact with prominent keywords including recycling, LCA, waste management, plastic waste, environmental impact, and circular economy. This study finally provides profound insights into research positions and future direction related to LCA studies on plastic waste, which are escalating at the forefront because of the importance of sustainable plastic waste management. Scientific studies in this domain are expected to continuously grow to support the awareness and commitment of all stakeholders in addressing plastic waste issues worldwide.</p> Zulwelly Murti, Riana Y. H. Sinaga, Mulyono Mulyono, Geby Otivriyanti, Soen Steven, Maya L. D. Wardani, Nurus S. Laili, Anita Yustisia, Ernie S. A. Soekotjo, Vionita Lukitari, Muhammad Sudiono, Adik A. Soedarsono, Dian P. Dewanti Copyright (c) 2024 Zulwelly Murti, Riana Y. H. Sinaga, Mulyono Mulyono, Geby Otivriyanti, Soen Steven, Maya L. D. Wardani, Nurus S. Laili, Anita Yustisia, Ernie S. A. Soekotjo, Vionita Lukitari, Muhammad Sudiono, Adik A. Soedarsono, Dian P. Dewanti https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2001 Wed, 31 Jan 2024 00:00:00 +0700 Karakteristik Angin Wilayah Pesisir Utara Pulau Jawa Berdasarkan Variabilitas Monsun https://ejournal.brin.go.id/JTL/article/view/2039 <p><em>The characteristics of near-surface winds correlated with global phenomena such as monsoons have previously been extensively investigated. However, limited wind data investigations have been conducted in the northern coastal region of Java Island. This research aims to analyze the wind characteristics in this region, focusing on monsoon variability. Statistical analysis and wind rose diagrams analysis were conducted using wind direction and speed data spanning from 2013 to 2022 at three Meteorological Station by the Meteorology, Climatology, and Geophysics Agency (BMKG): Tanjung Priok-North Jakarta, Tanjung Mas-Semarang, and Perak II-Surabaya. The analysis results indicate that North Jakarta has experienced an increasing trend in annual average wind speed over a decade, whereas Semarang and Surabaya have seen a decrease. When influenced by the east and west monsoons, wind speeds in North Jakarta and Semarang are higher than during transition periods I and II. Conversely, in Surabaya, the average value was highest during transition period II compared to the west monsoon, east monsoon, and transition period I. Surabaya's average daily wind speed surpassed that of North Jakarta and Semarang. However, Semarang exhibited the highest maximum wind speed among the three regions. The dominant wind direction aligns with the monsoon wind pattern, whether the west or the east. During the transition season, wind direction tends to be more variable, with the frequency of wind events from the south and southwest occurring least frequently compared to other directions. This preliminary study provides the foundation for advancing the knowledge of meteorological studies, particularly wind, as they relate to hydrometeorological disasters.</em></p> <p> </p> <p><strong>Abstrak</strong></p> <p>Karakteristik angin dekat permukaan yang dikaitkan dengan fenomena global seperti monsun telah banyak dilakukan riset sebelumnya. Akan tetapi, kajian data angin masih sedikit ditemukan di wilayah pesisir utara Pulau Jawa. Riset ini bertujuan untuk menganalisis karakteristik angin wilayah tersebut berdasarkan variabilitas monsun. Analisis statistik dan analisis diagram <em>wind rose</em> dilakukan untuk data arah dan kecepatan angin tahun 2013–2022 di tiga Stasiun Meteorologi milik Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) yaitu di Tanjung Priok-Jakarta Utara, Tanjung Mas-Semarang, dan Perak II-Surabaya. Hasil analisis menunjukkan bahwa selama sepuluh tahun tersebut di Jakarta Utara telah terjadi peningkatan tren kecepatan angin rata-rata tahunan, sedangkan di Semarang dan Surabaya terjadi penurunan. Saat dipengaruhi monsun timur maupun barat, kecepatan angin di Jakarta Utara dan Semarang lebih tinggi dibanding saat masa peralihan I maupun peralihan II. Akan tetapi, kecepatan angin di Surabaya saat masa peralihan II memiliki nilai rata-rata tertinggi dibandingkan saat periode monsun barat, monsun timur, maupun saat masa peralihan I. Rata-rata kecepatan angin harian di Surabaya lebih tinggi dibanding Jakarta Utara dan Semarang, namun Semarang memiliki nilai maksimum kecepatan angin yang paling tinggi di antara kedua wilayah lainnya. Dominasi arah angin terlihat mengikuti pola angin monsun baik saat terjadi monsun barat, ataupun saat terjadi monsun timur. Arah angin akan cenderung lebih beragam pada saat musim peralihan dengan frekuensi kejadian angin dari selatan maupun barat daya paling sedikit terjadi daripada arah angin lainnya. Studi awal ini sebagai dasar untuk pengayaan ilmu kajian meteorologi terutama angin untuk dikaitkan dengan bencana hidrometeorologi.</p> Anies Ma’rufatin, Ardila Yananto, Wahyu Widodo Pandoe Copyright (c) 2024 Anies Ma’rufatin, Ardila Yananto, Wahyu Widodo Pandoe https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2039 Wed, 31 Jan 2024 00:00:00 +0700 Literacy of Coastal Communities on the Ciguatera Phenomenon and its Impact on Economic Activities https://ejournal.brin.go.id/JTL/article/view/2006 <p><em>Keracunan ciguatera mempunyai dampak yang signifikan, memengaruhi kesehatan fisik individu, dan memberikan pengaruh terhadap kesejahteraan ekonomi dan sosial penduduk yang tinggal di daerah yang terkena dampak. Tujuan dari penelitian ini adalah untuk mengevaluasi tingkat literasi masyarakat pesisir di Gili Matra, Indonesia, sehubungan dengan pemahaman mereka tentang fenomena Ciguatera dan potensi dampaknya terhadap kegiatan ekonomi lokal. Melalui penggunaan pendekatan penelitian kualitatif, penelitian ini menemukan bahwa sebagian besar penduduk yang tinggal di kawasan pesisir Gili Matra memiliki pemahaman yang terbatas terhadap fenomena Ciguatera. Meskipun dampak ekonomi langsung terhadap masyarakat lokal mungkin terbatas, namun penting untuk mengedukasi masyarakat mengenai fenomena ini guna meningkatkan kesadaran masyarakat, khususnya dalam hal pencegahan terjadinya keracunan ciguatera.</em></p> <p> </p> <p><strong>Abstract</strong></p> <p>Ciguatera poisoning has significant implications, affecting both the physical health of individuals and exerting influence on the economic and social well-being of populations living in affected areas. This study aims to evaluate the level of literacy proficiency among coastal populations in Gili Matra, Indonesia, in connection to their understanding of the Ciguatera phenomena and its potential impact on local economic activities. Through the utilization of a qualitative research approach, the present study discovered that a significant proportion of residents living in the coastal area of Gili Matra had a restricted understanding of the Ciguatera phenomena. Although the immediate economic effects on the local community may be limited, it is crucial to educate the public about this phenomenon to increase public awareness, particularly in terms of preventing the occurrence of CFP.</p> Muhammad Nizar Ali, Diswandi Diswandi, Suhendar I. Sachoemar, Haryanti Haryanti, Shinta Leonita, Arief Rachman, Ratu Siti Aliah, Mitsutaku Makino, Mark L Wells, Rahman Rahman, Luluk Fadliyanti, Riardi Pratista Dewa Copyright (c) 2024 Muhammad Nizar Ali, Diswandi Diswandi, Suhendar I. Sachoemar, Haryanti Haryanti, Shinta Leonita, Arief Rachman, Ratu Siti Aliah, Mitsutaku Makino, Mark L Wells, Rahman Rahman, Luluk Fadliyanti, Riardi Pratista Dewa https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2006 Wed, 31 Jan 2024 00:00:00 +0700 Green Logistics dan Extended Producer Responsibility untuk Pengelolaan Sampah Kemasan Makanan dan Minuman di Universitas Widyatama https://ejournal.brin.go.id/JTL/article/view/642 <p><em>Food and beverage packaging waste is the predominant category of household waste on the Widyatama University campus. Responsibility for waste management lies with Widyatama University and requires collaboration from diverse stakeholders, including producers. Waste management employs various methods. The research endeavors to construct a waste management model utilizing concepts of green logistics and extended producer responsibility (EPR) to bolster the green campus initiative by harnessing packaging waste potential. The green logistics concept runs a series of processes—reduction, recycling, reuse, and material substitution—directed at packaging waste and transportation to a Waste Bank. EPR concept incorporates policies incentivizing environmentally-conscious product creation, expanding the producer's responsibility. This concept extends to collaborations with small and medium enterprises (SMEs) around campus. Research simulations demonstrate a substantial reduction in waste volume, from 144 m<sup>3</sup> to 72 m<sup>3</sup> annually. The cost of waste management decreases by Rp11,352,400 from Rp36,244,800 to Rp24,872,400 annually, resulting in an efficiency of 31.34%.</em></p> <p> </p> <p><strong>Abstrak</strong></p> <p>Sampah kemasan makanan dan minuman merupakan jenis sampah rumah tangga terbesar di kampus Universitas Widyatama. Pengelolaan sampah itu menjadi tanggung jawab pihak Universitas Widyatama dan memerlukan keterlibatan dan dukungan dari berbagai pihak, termasuk pihak produsen. Pengelolaan sampah dapat dilakukan dengan beberapa metode. Tujuan penelitian ini adalah membuat model pengelolaan sampah dengan pendekatan konsep <em>green logistics</em> dan <em>extended producer responsibility</em> (EPR) untuk mendukung <em>green campus</em> melalui pemanfaatan limbah kemasan makanan dan minuman di lingkungan Universitas Widyatama. Konsep <em>green logistics</em> diterapkan dengan rangkaian proses <em>reduction, recycle, reuse,</em> dan subsitusi material pada sampah kemasan dan pengirimannya ke Bank Sampah. Konsep EPR memiliki prinsip kebijakan yang mendorong sistem penciptaan suatu produk dengan mempertimbangkan aspek lingkungan dari sisi daur hidup produk tersebut dengan cara memperluas tanggung jawab produsen. Konsep ini diterapkan melalui kolaborasi dengan usaha mikro kecil dan menengah (UMKM) di sekitar lingkungan kampus. Dari simulasi pada penelitian ini diperoleh penurunan volume sampah dari 144 m<sup>3</sup> menjadi 72 m<sup>3</sup> per tahun. Biaya pengelolaan sampah turun sebesar Rp11.352.400 dari Rp36.244.800 menjadi Rp24.872.400 per tahun, sehingga diperoleh efisiensi sebesar 31,34%.</p> Muchammad Fauzi, Verani Hartati , Setijadi, Salwaa Roudhoh Nugraha, Salsabila Nursalim, Nissa Syifa Puspani Copyright (c) 2024 Muchammad Fauzi, Verani Hartati , Setijadi, Salwaa Roudhoh Nugraha, Salsabila Nursalim, Nissa Syifa Puspani https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/642 Wed, 31 Jan 2024 00:00:00 +0700 Analisis Keberlanjutan Taman Wisata Alam Lembah Harau di Kabupaten Lima Puluh Kota https://ejournal.brin.go.id/JTL/article/view/886 <p>Lembah Harau Nature Tourism Park (TWA) is one of the natural tourism potentials in Lima Puluh Kota Regency with an area of 27.5 Ha. Based on statistical data in 2022, there will be an increase in tourists from TWA Lembah Harau in Lima Puluh Kota Regency, with a recorded increase in tourists reaching 14% with the number of visits in 2022 amounting to 270,790 visitors. Increasing Lembah Harau TWA visits can have a positive impact on increasing income for both the community and the government, however if it exceeds the area's carrying capacity it can cause negative impacts on the ecological aspects of the surrounding area. Based on this, the concept of regional development strategy is an important factor in developing sustainable tourism activities. This research was conducted from November to December 2022. The aim of this research is to analyze the strategy for sustainable development of the Lembah Harau TWA. Data collection was carried out to identify the carrying capacity of each tourist attraction and development analysis using SWOT (Strength-Weakness-OpportunitiesThreats) with interviews with certain stakeholders. The results of the overall carrying capacity analysis of the Lembah Harau TWA area can accommodate 313,337 visitors per year or 2,725 visitors per day. Based on the results of the carrying capacity analysis for each tourist attraction unit, it is stated that tourists can be accommodated to carry out activities in the area. So, the main strategy for sustainable development is to optimize the Lembah Harau TWA by expanding areas that have the potential for waterfalls as the main tourist attraction by optimizing the infrastructure of the Lembah Harau TWA.</p> <p> </p> <p><strong>Abstrak</strong></p> <p>Taman Wisata Alam (TWA) Lembah Harau merupakan salah satu potensi wisata alam di Kabupaten Lima Puluh Kota dengan luas 27,5 Ha. Berdasarkan data statisik tahun 2022 terjadi peningkatan wisatawan TWA Lembah Harau di Kabupaten Lima Puluh Kota, tercatat kenaikan wisatawan mencapai 14% dengan jumlah kunjungan tahun 2022 sebesar 270.790 pengunjung. Peningkatan kunjungan TWA Lembah Harau dapat menimbulkan dampak positif bagi peningkatan pendapatan baik masyarakat maupun pemerintah, namun apabila telah melampaui daya dukung kawasan dapat menyebabkan terjadinya dampak negatif terhadap aspek ekologi kawasan sekitar. Berdasarkan hal tersebut, maka konsep strategi pengembangan kawasan menjadi faktor yang penting dalam pengembangan kegiatan wisata yang berkelanjutan. Penelitian ini dilakukan dari bulan November hingga Desember 2022, Adapun tujuan penelitian ini adalah menganalisis strategi pengembangan TWA Lembah Harau yang berkelanjutan. Pengumpulan data dilakukan untuk mengidentifikasi daya dukung setiap atraksi wisata hingga analisis pengembangan menggunakan SWOT (StrengthWeakness Opportunities-Threats) dengan wawancara pada stakeholder tertentu. Hasil analisis daya dukung secara keseluruhan kawasan TWA Lembah Harau dapat menampung 313.337 pengunjung pertahun atau 2.725 pengunjung perhari. Berdasarkan hasil analisis daya dukung tersebut untuk setiap unit atraksi wisata, dinyatakan bahwa wisatawan dapat ditampung untuk melakukan kegiatan/aktivitas di area tersebut. Maka, strategi utama pengembangan berkelanjutan yang dilakukan dengan mengoptimalkan TWA Lembah Harau dengan perluasan kawasan yang memiliki potensi air terjun sebagai daya tarik utama wisata dengan mengoptimalkan sarana prasarana TWA Lembah Harau.</p> Putri Yolanda, Rinekso Soekmadi, Nandang Prihadi, Rizky Pratama Adhi Copyright (c) 2024 Putri Yolanda, Rinekso Soekmadi, Nandang Prihadi, Rizky Pratama Adhi https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/886 Wed, 31 Jan 2024 00:00:00 +0700 Penilaian Ekowisata Mangrovesari di Kabupaten Brebes melalui Studi Kelayakan serta Perumusan Strategi Pengembangannya https://ejournal.brin.go.id/JTL/article/view/1073 <p><em>The potential for tourism utilization in Indonesia's coastal areas is quite high considering its geographical location, supported by its coastline and natural vegetation. Ecotourism in coastal areas needs sustainable development planning and strategies to prevent decreasing in environment quality. This study aims to assess feasibility, analyze potential and determine priority strategies in the development of Mangrovesari ecotourism in Brebes Regency. This research was conducted based on quantitative-descriptive analysis through several methods. The feasibility assessment of ecotourism development was carried out using Analisis Daerah Operasi Obyek dan Daya Tarik Wisata Alam (ADO ODTWA) methods, the potential analysis was carried out using the Strength, Weakness, Opportunity, Threat (SWOT) methods, while the determination of priority strategies was obtained through the results of the Internal Factor Analysis Strategy-External Factor Analysis Strategy (IFAS-EFAS). Based on the ADO ODTWA analysis, Mangrovesari ecotourism deserves to be further developed with a value of 80%. The potential and strategy of Mangrovesari ecotourism development have been described in the SWOT matrix. The results of IFAS-EFAS analysis show coordinates (0.710; 0.110) with position in quadrant I, which means that the Strength-Opportunity (SO) strategy was chosen to be a priority strategy for the development of Mangrovesari ecotourism. The SO strategy is carried out through optimization and improvement of the quality of tourist attractions, increased accessibility, increased cooperation for the implementation of tourism development plans, optimization of information media, as well as capacity building and community involvement.</em></p> <p> </p> <p><strong>Abstrak</strong></p> <p>Potensi pemanfaatan pariwisata di kawasan pesisir Indonesia cukup tinggi mengingat letak geografisnya, didukung garis pantai dan vegetasi alamnya. Ekowisata di kawasan pesisir perlu diiringi denganperencanaan dan strategi pengembangan berkelanjutan untuk mencegah penurunan kualitas lingkungan. Penelitian ini bertujuan untuk menilai kelayakan, menganalisis potensi, serta menentukan strategi prioritas dalam pengembangan ekowisata Mangrovesari di Kabupaten Berbes. Penelitian ini dilakukan berbasis analisis deskriptif-kuantitatif melalui beberapa metode. Penilaian kelayakan pengembangan ekowisata dilakukan menggunakan metode Analisis Daerah Operasi Objek dan Daya Tarik Wisata Alam(ADO ODTWA), analisis potensi dilakukan menggunakan metode <em>Strength, Weakness, Opportunity, Threat</em> (SWOT), sedangkan penentuan strategi prioritas diperoleh melalui hasil analisis <em>Internal Factor Analysis Strategy-External Factor Analysis Strategy</em> (IFAS-EFAS). Berdasarkan hasil analisis ADO ODTWA, ekowisata Mangrovesari layak untuk dapat dikembangkan lebih lanjut dengan nilai 80%. Potensi dan strategi pengembangan ekowisata Mangrovesari telah digambarkan dalam matriks SWOT. Hasil analisis IFAS-EFAS menunjukkan koordinat (0,710; 0,110) dengan posisi pada kuadran I, yang berarti bahwa strategi<em> Strength-Opportunity</em> (SO) dipilih menjadi strategi prioritas untuk pengembangan ekowisata Mangrovesari. Strategi SO dilakukan melalui optimalisasi dan peningkatan kualitas objek wisata, peningkatan aksesibilitas, peningkatan kerjasama untuk implementasi rencana pengembangan wisata, optimalisasi pemanfaatan media informasi, serta peningkatan kapasitas dan keterlibatan masyarakat.</p> Raissa Anjani, Khaerul Amru, Wieke Herningtyas, Melania Hanny Aryantie, Moch. Ikhwanuddin, Widiatmini Sih Winanti, Teddy W. Sudinda Copyright (c) 2024 Raissa Anjani, Khaerul Amru, Wieke Herningtyas, Melania Hanny Aryantie, Moch. Ikhwanuddin, Widiatmini Sih Winanti, Teddy W. Sudinda https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/1073 Wed, 31 Jan 2024 00:00:00 +0700 Kompos Limbah Baglog Jamur Tiram sebagai Alternatif Budidaya Edamame di Tanah Gambut https://ejournal.brin.go.id/JTL/article/view/3562 <p><em>Along with the times, edamame has good prospects for development. This</em><em> </em><em>prospect </em><em>c</em><em>an be seen from the high demand for exports of around 100,000 t year</em><em><sup>-1</sup></em><em>. However, Indonesia is only able to fulfill about 3% of it. The lack of fulfillment of the export market for edamame is due to several constraints in its development. One of the obstacles is the availability of fertile land. Peatlands in South Kalimantan have problems with high soil acidity and low soil fertility. Using oyster mushroom baglog waste </em><em>(OMBW) </em><em>is an effort to increase peat soil fertility and edamame production. This study aims to determine the best dosage of </em><em>OMBW </em><em>compost for raising soil pH, growth, and yield of edamame on peat soil</em><em>s</em><em>. This study was structured using a one-factor completely randomized design (CRD) with </em><em>five </em><em>treatments, namely: 0 (b</em><em><sub>0</sub></em><em>), 5 </em><em>(</em><em>b</em><em><sub>1</sub></em><em>)</em><em>, 10 </em><em>(</em><em>b</em><em><sub>2</sub></em><em>),</em><em> 15 </em><em>(</em><em>b</em><em><sub>3</sub></em><em>), </em><em>and 20 t ha</em><em><sup>-1</sup></em><em> </em><em>OMBW </em><em> compost </em><em>(</em><em>b</em><em><sub>4</sub></em><em>)</em><em>. The results showed </em><em>t</em><em>he best dose of 20 t ha</em><em><sup>-1</sup></em><em> </em><em>OMBW </em><em> compost (b</em><em><sub>4</sub></em><em>) increased plant height at 4 week</em><em>s</em><em> after planting</em><em> (WAP)</em><em> by 45%, the number of leaves at 4 </em><em>WAP</em><em> by 60%, and the number of pods by 65%</em><em>.</em><em> In comparison, the dose of</em><em> </em><em>10 t ha</em><em><sup>-1</sup></em><em> </em><em>OMBW </em><em> compost (b</em><em><sub>2</sub></em><em>) was best at increasing soil pH at 3 weeks after incubation by 20.24%, increasing plant stem diameter by 39%, and fresh pod weight by 78%.</em></p> <p> </p> <p><strong>Abstrak</strong></p> <p>Seiring dengan perkembangan zaman, edamame memiliki prospek yang baik untuk dikembangkan. Hal ini terlihat dari kebutuhan ekspornya yang tinggi sekitar 100.000 t tahun<sup>-1</sup>. Namun, Indonesia hanya mampu memenuhi sekitar 3% dari kebutuhan tersebut. Kurangnya pemenuhan pasar ekspor akan edamame ini dikarenakan beberapa kendala dalam pengembangannya. Salah satu kendalanya yaitu ketersediaan lahan subur. Lahan gambut di Kalimantan Selatan memiliki masalah kemasaman tanah yang tinggi dan kesuburan tanah yang rendah. Pemanfaatan limbah baglog jamur tiram (LBJT) merupakan upaya untuk meningkatkan kesuburan tanah gambut dan produksi edamame. Penelitian ini bertujuan untuk mengetahui dosis terbaik kompos LBJT dalam meningkatkan pH tanah, pertumbuhan, dan hasil edamame di tanah gambut. Penelitian ini disusun menggunakan rancangan acak lengkap (RAL) satu faktor dengan lima perlakuan yaitu: 0 (b<sub>0</sub>), 5<sup> </sup>(b<sub>1</sub>), 10 (b<sub>2</sub>), 15 (b<sub>3</sub>), dan 20 t ha<sup>-1</sup> kompos LBJT (b<sub>4</sub>). Penelitian ini menghasilkan dosis terbaik yaitu 20 t ha<sup>-1</sup> kompos LBJT (b<sub>4</sub>) mampu meningkatkan tinggi tanaman pada 4 minggu setelah tanam (MST) sebesar 45%, jumlah daun pada 4 MST sebesar 60%, dan jumlah polong sebesar 65%. Sebagai pembanding, dosis 10 t ha<sup>-1</sup> kompos LBJT (b<sub>2</sub>) terbaik dalam meningkatkan pH tanah pada 3 minggu setelah inkubasi sebesar 20,24%, meningkatkan diameter batang tanaman sebesar 39%, dan bobot polong segar sebesar 78%.</p> Riza Adrianoor Saputra, Qudsi Ramadani, Jumar Jumar Copyright (c) 2024 Riza Adrianoor Saputra, Qudsi Ramadani, Jumar Jumar https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3562 Wed, 31 Jan 2024 00:00:00 +0700 Pertumbuhan Crustose Coralline Algae (CCA) pada Substrat Keramik dengan Komposisi dan Jenis Material Penyusun yang Berbeda https://ejournal.brin.go.id/JTL/article/view/2009 <p><em>The low level of coral reef ecosystems in excellent condition in Bali waters shows the need for rehabilitation and restoration efforts on coral reefs. Crustose Coralline Algae (CCA) plays an essential role as a trigger for the attachment and metamorphosis of coral planules because it can produce chemical signals that the planula can perceive as instructions for attachment to the substrate. It is necessary to pay attention to the materials that make up the substrate. One of the substrate materials that can be used is ceramic. This research aims to determine the effectiveness of ceramics as a material for making artificial reefs on CCA growth. The effectiveness of ceramics is measured based on the type and composition of the ceramic materials. Each ceramic substrate was tested for surface texture, material composition and water absorption level. The data collected consists of water quality and CCA coverage. Differences in CCA coverage on the composition and type of material making up the ceramic substrate were analyzed using the two-way ANOVA test. The results showed that the use of 5% composition of all types of materials provided a significantly higher difference in CCA coverage, and ceramic waste (grog) provided a significantly higher difference in CCA coverage than other materials. Based on the two-way ANOVA test (P = 0.195), it shows that the interaction between the percentage of composition and the type of additional material does not significantly influence CCA coverage.</em></p> <p> </p> <p><strong>Abstrak</strong></p> <p>Rendahnya ekosistem terumbu karang dalam kondisi sangat baik di Perairan Bali menunjukkan perlunya upaya rehabilitasi dan restorasi terhadap terumbu karang. Crustose Coralline Algae (CCA) berperan penting sebagai pemicu penempelan dan metamorfosis planula karang karena dapat menghasilkan sinyal kimia yang dapat ditangkap planula sebagai petunjuk melakukan penempelan pada substrat. Bahan penyusun substrat perlu diperhatikan, salah satu bahan substrat yang dapat digunakan adalah keramik. Penelitian ini secara umum bertujuan untuk mengetahui efektivitas keramik sebagai material penyusun terumbu buatan terhadap pertumbuhan CCA. Efektifitas keramik diukur berdasarkan jenis dan komposisi bahan penyusun keramik. Pada masing-masing substrat keramik dilakukan pengujian tekstur permukaan, komposisi bahan, dan tingkat penyerapan air. Data yang dikumpulkan terdiri atas data kualitas air dan tutupan CCA. Perbedaan tutupan CCA pada komposisi dan jenis material penyusun substrat keramik dianalisis dengan uji ANOVA dua arah. Hasil penelitian menunjukkan bahwa penggunaan 5% komposisi semua jenis material memberikan perbedaan tutupan CCA yang secara signifikan lebih tinggi dan limbah keramik (grog) memberikan perbedaan tutupan CCA yang secara signifikan daripada material lainnya. Berdasarkan uji ANOVA dua arah (P = 0,195) menunjukkan bahwa interaksi faktor persentase komposisi dan jenis material bahan tambahan tidak signifikan memberikan pengaruh terhadap tutupan CCA.</p> Anak Agung Ngurah Agung Indra Wijaya, I Putu Angga Kristyawan, I Gusti Bagus Sila Dharma Copyright (c) 2024 Anak Agung Ngurah Agung Indra Wijaya, I Putu Angga Kristyawan, I Gusti Bagus Sila Dharma https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2009 Wed, 31 Jan 2024 00:00:00 +0700 Penilaian Status Kualitas Air Baku untuk Air Minum di Area Concentrating Division PT Freeport Indonesia https://ejournal.brin.go.id/JTL/article/view/3561 <p><em>The quality of drinking water necessitated by workers is determined by raw water quality acquired from surface runoff. It shall qualify the Government of Indonesiaꞌs regulation on quality requirements. This research aims to analyze raw water quality used as the primary source of potable water by using The Pollution Index (PI) and Storage &amp; Retrieval (STORET) method. Analysis results of the raw water quality using IP and STORET methods, respectively, scores at 0.612 and 0. This raw water classification meets the required quality metrics since all physical, chemical, and microbiological parameters score below threshold limit values. Based on the STORET method, this raw water is classified as an A category. The raw water quality shall always be assured of being polluted or contaminated. One of the paramount indicators to ensure this quality is to implement laboratory examination and daily inspection routinely toward parameters of physical, chemical, and microbiological presence in the water. Examination results that exceed the thresholds indicate the presence of pollution in the water and shall be immediately rectified.</em></p> <p><strong>Abstrak</strong></p> <p>Kualitas air minum yang dibutuhkan oleh pekerja ditentukan oleh kualitas air baku yang diperoleh dari <em>surface runoff</em>. Kualitas air baku ini harus memenuhi syarat kualitas yang ditetapkan oleh Pemerintah Republik Indonesia. Penelitian ini bertujuan untuk menganalisis kualitas air baku yang dipergunakan sebagai sumber air minum dengan menggunakan metode Indeks Pencemaran (IP) dan <em>Storage and Retrieval</em> (STORET). Hasil analisis kualitas air baku dengan metode IP dan STORET masing-masing memiliki skor 0,612 dan 0. Klasifikasi air baku dikategorikan memenuhi baku mutu karena semua parameter fisikia, kimia, maupun mikrobiologi memiliki nilai di bawah baku mutu. Klasifikasi air baku ini berdasarkan metode STORET memiliki kategori A. Air baku tersebut harus selalu dipastikan kualitasnya agar tidak tercemar maupun terkontaminasi. Hal yang perlu dipastikan yaitu menerapkan pengujian laboratorium serta pemeriksaan harian secara rutin terhadap kandungan parameter fisika, kimia, dan mikrobiologinya. Hasil pengujian yang melebihi baku mutu mengindikasikan adanya cemaran pada air baku tersebut sehingga harus segera dilakukan tindakan perbaikan.</p> Arif Susanto, Miftahul Zannah, Edi Karyono Putro, Anthony Andorful Manuel, Wiliam Engelberth Yochu, Rizky Mahlisa Copyright (c) 2024 Arif Susanto, Miftahul Zannah, Edi Karyono Putro, Anthony Andorful Manuel, Wiliam Engelberth Yochu, Rizky Mahlisa https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3561 Wed, 31 Jan 2024 00:00:00 +0700 Treatment for Landfill Leachate Utilize Coagulation-Flocculation Combined with Biofilter https://ejournal.brin.go.id/JTL/article/view/3560 <p><em>Air lindi yang dihasilkan dari Tempat Pemrosesan Akhir (TPA) Sampah mengandung bahan organik dan nutrien yang tinggi. Metode koagulasi-flokulasi terpadukan biofilter aerobik-anaerobik merupakan salah satu alternatif teknologi untuk pengolahan air lindi. Penelitian bertujuan untuk mengkaji efisiensi kombinasi koagulan Al<sub>2</sub>(SO<sub>4</sub>)<sub>3 </sub>dan FeCl<sub>3 </sub>pada proses koagulasi-flokulasi terpadukan biofilter dalam penurunan kadar Biological Oxygen Demand (BOD) dan Total Suspended Solid (TSS) pada pengolahan air lindi TPA. Metode pengumpulan data dilakukan dengan cara metode eksperimen air lindi dengan dua langkah pengolahan, yaitu koagulasi-flokulasi dan dilanjutkan dengan biofilter secara aerobik dan aerobik. Koagulan yang digunakan yaitu aluminium sulfat dan feri klorida dengan variasi komposisi 12 g/L:3 g/L (R.K1), 12 g/L:7 g/L (R.K2), 16 g/L:3 g/L (R.K3), dan 16 g/L:7 g/L (R.K4). Hasil penelitian didapatkan bahwa komposisi koagulan pada K4 mampu menurunkan konsentrasi BOD dengan efisiensi sebesar 87,99% dari konsentrasi 2.331 mg/L menjadi 280 mg/L dan konsentrasi TSS dengan efisiensi 81,48% dari konsentrasi 108 mg/L menjadi 20 mg/L. anfaat dari penelitian ini yaitu menjadi alternatif yang mudah diterapkan untuk menurunkan tingkat polutan pada air lindi agar tidak mencemari lingkungan. Kedepan, masih perlu diupayakan inovasi teknik untuk dapat menurunkan BOD sesuai ketentuan baku mutu.</em></p> <p><strong>Abstract</strong></p> <p>Landfill leachate contains high organic matter and nutrients. The coagulation-flocculation method integrated aerobic-anaerobic biofilter is one of the technological alternatives for leachate treatment. This research aimed to examine the effect of the combination of Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and FeCl<sub>3</sub> coagulants on the coagulation-flocculation process integrated with biofilters. The data were collected from two-stage leachate experiments (coagulation-flocculation), followed by aerobic and anaerobic biofilter. The coagulants used are aluminum sulfate and ferric chloride with composition variations of 12 g/L:3 g/L (R.K1), 12 g/L:7 g/L (R.K2), 16 g/L:3 g/L (R.K3), and 16 g/L:7 g/L (R.K4). The results showed that the coagulant composition in K4 was able to reduce BOD concentration with an efficiency of 87.99% from a concentration of 2,331 mg/L to 280 mg/L and TSS concentration with an efficiency of 81.48% from a concentration of 108 mg/L to 20 mg/L. The benefit of this research is that it is an alternative that is easily applied to reduce the level of pollutants in leachate water so as not to pollute the environment. In the future, it is still necessary to seek technical innovations to be able to reduce BOD according to quality standards.</p> Rhenny Ratnawati, Sugito Sugito, Shobah Fauzul Ula Khoiriyah Copyright (c) 2024 Rhenny Ratnawati, Sugito Sugito, Shobah Fauzul Ula Khoiriyah https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3560 Wed, 31 Jan 2024 00:00:00 +0700 Potential of Woody Biomass from River Debris for Thermal Process Fuel https://ejournal.brin.go.id/JTL/article/view/3559 <p><em>Sampah perairan di Tempat Penampungan Sementara (TPS)&nbsp;Jakarta memberikan beban polusi yang signifikan akibat aktivitas manusia. Pemulihan energi menyajikan peluang untuk mendapatkan nilai dari puing-puing ini dan mencapai solusi limbah nol. Di antara komponen limbah di TPS Perintis, puing kayu dari puing-puing sungai di Jakarta mendominasi. Penelitian ini bertujuan untuk memproses puing kayu melalui proses termal di TPS Perintis. Penelitian ini menggunakan analisis hitungan beban di TPS Perintis dan melakukan pengujian laboratorium, termasuk analisis kadar air, analisis kadar abu, penentuan nilai kalor, dan thermal gravimetric analysis (TGA). Generasi harian sampah perairan di TPS Perintis rata-rata mencapai 716,4 m<sup>3</sup>/hari atau 5,2 ton/hari, dengan puing kayu menyumbang 62,8% dari total. Puing kayu menunjukkan potensi pemulihan energi tertinggi di antara komponen limbah, dengan nilai kalor sebesar 16,43 kWh/kg atau 54.123,38 kWh/hari. Hasil uji TGA menunjukkan bahwa puing kayu dapat digunakan sebagai arang, dengan dekomposisi terjadi pada rentang suhu 200–500°C&nbsp;dan hasil sisa sebesar 14%. Temuan ini menyoroti kelayakan pemulihan energi dari puing kayu di TPS Perintis dan potensi untuk mengubahnya menjadi arang. Kesimpulan penelitian ini menekankan pentingnya penggunaan proses termal dalam mengelola puing-puing sungai, menyediakan solusi berkelanjutan untuk pengelolaan limbah dan pelestarian lingkungan.</em></p> <p><strong>Abstract</strong></p> <p>River debris at the Waste Temporary Shelter (TPS) Perintis Jakarta poses a significant pollution load resulting from human activities. Energy recovery presents an opportunity to derive value from this debris and achieve a zero-waste solution. Among the waste components at TPS Perintis, wood debris from river debris in Jakarta is predominant. This study aimed to process the wood debris through a thermal process at TPS Perintis. The research employed load count analysis at TPS Perintis and conducted laboratory testing, including moisture content analysis, ash content analysis, calorific value determination, and thermal gravimetric analysis (TGA). The daily generation of river debris at TPS Perintis averaged 7.164 m<em><sup>3</sup></em>/day or 5.2 tons/day, with wood debris accounting for 62.8% of the total. Wood debris exhibited the highest potential for energy recovery among the waste components, with a calorific value of 16.43 kWh/kg or 54,123.38 kWh/day. The TGA test results indicated that wood debris could be utilized as charcoal, with decomposition occurring within the temperature range of 200–500°C and a residue yield of 14%. These findings highlight the feasibility of energy recovery from wood debris at TPS Perintis and the potential for its conversion into charcoal. The study's conclusions emphasize the significance of utilizing thermal processes for managing river debris, providing a sustainable solution for waste management and environmental conservation.</p> Mega Mutiara Sari, Takanobu Inoue, Regil Kentaurus Harryes, Kuriko Yokota, Iva Yenis Septiariva, Sapta Suhardono, Shigeru Kato, Suprihanto Notodarmojo, Kevin Foggy Delu, I Wayan Koko Suryawan Copyright (c) 2024 Mega Mutiara Sari, Takanobu Inoue, Regil Kentaurus Harryes, Kuriko Yokota, Iva Yenis Septiariva, Sapta Suhardono, Shigeru Kato, Suprihanto Notodarmojo, Kevin Foggy Delu, I Wayan Koko Suryawan https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3559 Wed, 31 Jan 2024 00:00:00 +0700 Comparison of Plastic Waste Processing Machine Models in The Producing of Plastic Grains and Oil Fuel and Its Cost Analysis https://ejournal.brin.go.id/JTL/article/view/2021 <p><em>Alat pengolah sampah plastik melalui proses pemanasan dan destilasi dapat menghasilkan butir plastik dan bahan bakar minyak sebagai alternatif solusi lain untuk masalah sampah plastik. Pengujian kinerja dari 3 (tiga) buah model mesin pengolah sampah plastik (model I, II, and III) yang masing-masing dilengkapi dengan satu, dua, dan tiga tabung distilasi, dilakukan untuk membandingkan hasil produksi butir plastik dan bahan bakar minyak yang dapat dihasilkan. Selanjutnya, biaya ekonomiannya dianalisis menggunakan besaran nilai titik impas (break even point). Hasil pengujian menunjukkan bahwa Model I menghasilkan butir plastik tertinggi, yaitu sebesar 2,76 kg dan Model III menghasilkan bahan bakar minyak tertinggi, yaitu sebesar 51 mL. Hasil uji statistik diperoleh bahwa tidak ada perbedaan yang signifikan antara Model I, II, dan III terhadap kuantitas butir plastik dan bahan bakar minyak dengan hasil (p&gt;α; (1,000 &gt; 0,05). Hasil analisis keekonomian menunjukkan bahwa titik impas (break even point) dari masing-masing model (I, II dan III) akan tercapai dalam waktu 44,47 dan 35 hari dengan waktu operasi selama 8 jam per hari dan 10,5 kg/hari sampah plastik. Secara ekonomi, model III menunjukkan pengembalian investasi yang relatif lebih cepat dibandingkan model I dan II. Hasil penelitian ini bermanfaat bagi pengembangan perancangan mesin pengolah sampah plastik untuk skala yang lebih besar di industri. Selain itu, diharapkan juga dapat memberikan nilai tambah ekonomi masyarakat dan alternatif solusi bagi permasalahan sampah plastik di Indonesia.</em></p> <p> </p> <p><strong>Abstract</strong></p> <p>A plastic waste processing apparatus, employing heating and distillation processes can yield plastic grains and oil fuel, providing an alternative solution to the plastic waste problem. Performance tests were conducted on 3 (three) models of plastic waste processing machines (Models I, II, and III) equipped with one, two, and three distillation cylinders, respectively, to compare the quantity of plastic grains and oil fuel produced. Furthermore, an economic cost analysis was also conducted by using the break even point as a metric. The results showed that Model I yielded the highest quantity of plastic grains (2.76 kg), and Model III produced the highest amount of oil fuel (51 mL). Statistical tests indicated no significant differences (p&gt;α; 1.000 &gt; 0.05) among Models I, II, and III concerning the quantities of plastic pellets and oil fuel. Economic analysis demonstrated that the break-even points for each model (I, II, and III) would be attained in 44, 47, and 35 days, respectively, assuming an 8-hour daily operation and processing 10.5 kg/day of plastic waste. Model III economically showed a relatively more cost-effective compared to Models I and II. The findings of this research can be applied to the development of mass-production of plastic grains and oil fuel from plastic waste on an industrial scale. This research could be contributed to the increas in community economic value and offer an alternative solution to the plastic waste issue in Indonesia.</p> Sri Puji Ganefati, Iswanto, Bambang Suwerda, Sugianto, Sarjito Eko Windarso Copyright (c) 2024 Sri Puji Ganefati, Iswanto, Bambang Suwerda, Sugianto, Sarjito Eko Windarso https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2021 Wed, 31 Jan 2024 00:00:00 +0700 Strategi Terpadu: Mengurangi Banjir Melalui Sumur Resapan dan Sistem Informasi Geografis https://ejournal.brin.go.id/JTL/article/view/2180 <p><em>One of the residential areas is located in Banjar Koripan Kaja, Abian Tuwung Village, Kediri District, Tabanan Regency, namely BCA Land Housing Phase 1 Block C. During the high-intensity rainy season, this area often experiences floods. To overcome this, handling efforts can be carried out with the aim of increasing water infiltration into the ground through the creation of infiltration wells. The infiltration well analysis method is planned following SNI-03-2453-2002 and the Geographic Information System (GIS). The analysis of infiltration wells in BCA Land Housing Phase 1 Block C showed the ability to reduce flood discharge for the 5 years by 0.61% and reduce runoff volume by 0.59%. Infiltration wells in the surrounding area were able to reduce flood discharge for the 5 years by 78.56% and reduce runoff volume by 75.67%. The following GIS analysis showed the efficiency of reducing flood discharge in BCA Land Housing Phase 1 Block C by 0.65% and reducing flood volume by 0.63%. Based on the land area around the housing, it can be seen that the efficiency of reducing flood discharge by 81.22% and the efficiency of reducing flood volume by 78.23%. The results showed that the application of infiltration wells in BCA Land Housing Phase 1 Block C was not effective in reducing flood volume and discharge and contributed to preserving the surrounding environment. However, it can be categorized as effective if infiltration wells can be applied to the surrounding area (Penet Sub Watershed)</em></p> <p><strong>Abstrak</strong></p> <p>Salah satu kawasan perumahan terletak di Banjar Koripan Kaja, Desa Abian Tuwung, Kecamatan Kediri, Kabupaten Tabanan, yakni Perumahan BCA Land Tahap 1 Blok C. Saat musim hujan dengan<br />intensitas tinggi, kawasan ini sering mengalami banjir. Untuk mengatasi hal ini, upaya penanganan dapat dilakukan dengan tujuan dapat meningkatkan resapan air ke dalam tanah melalui pembuatan<br />sumur resapan. Metode analisis sumur resapan direncanakan sesuai dengan SNI-03-2453-2002 dan<br />Sistem Informasi Geografis (SIG). Hasil analisis sumur resapan di Perumahan BCA Land Tahap 1<br />Blok C menunjukkan kemampuan mereduksi debit banjir periode ulang 5 tahun sebesar 0,61% dan mengurangi volume limpasan sebesar 0,59%. Sumur resapan di daerah sekitar mampu mengurangi<br />debit banjir periode ulang 5 tahun sebesar 78,56% dan mengurangi volume limpasan sebesar 75,67%. Analisis berikutnya dengan menggunakan SIG menunjukkan efisiensi penurunan debit banjir pada Perumahan BCA Land Tahap 1 Blok C sebesar 0,65% dan efisiensi penurunan volume banjir sebesar 0,63%. Berdasarkan luas lahan sekitar perumahan tersebut, terlihat efisiensi penurunan debit banjir sebesar 81,22% dan efisiensi penurunan volume banjir sebesar 78,23%. Hasil penelitian menunjukkan<br />bahwa penerapan sumur resapan pada Perumahan BCA Land Tahap 1 Blok C tidak efektif dalam<br />mereduksi volume dan debit banjir serta memberikan kontribusi dalam melestarikan lingkungan<br />sekitar. Namun, dapat dikategorikan efektif jika sumur resapan dapat diterapkan pada daerah<br />sekitar (Sub DAS Penet).</p> Tri Hayatining Pamungkas, I Ketut Merta Kusuma Dana, I Ketut Soriarta, I Made Kariyana, Ni Kadek Astariani Copyright (c) 2024 Tri Hayatining Pamungkas, I Ketut Merta Kusuma Dana, I Ketut Soriarta, I Made Kariyana, Ni Kadek Astariani https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2180 Wed, 31 Jan 2024 00:00:00 +0700 Perspektif Siswa Sekolah Dasar Adiwiyata mengenai Perilaku Peduli Lingkungan Hidup https://ejournal.brin.go.id/JTL/article/view/2346 <p><em>Pro-Environmental Behavior (PEB) has been proven to correlate with some individual positive qualities so it is important to be developed since childhood. The establishment of PEB for early age students is in accordance with the elementary school education curriculum and is supported by the implementation of the Adiwiyata Program. As contrary, student’s knowledge and behavior fall short of expectation. However, this limitation was seldom understood from students perspective, which was still rarely studied. This study was conducted to gain a comprehensive understanding of PEB among students in an elementary school that implements the Adiwiyata Program, using a mixed-methods and concurrent explanatory study. The quantitative study involved 59 students mainly to examine the relationship between knowledge and PEB, while the qualitative study involved 9 students. The result showed that there was no relationship between knowledge and PEB (Spearman's rho=0.103; p=0.436). Thematic and correspondence analysis of qualitative data resulted that the breadth of students' knowledge only met three of six aspects of PEB, successively from the largest: vicarious behaviors toward conservation, recycling, and waste avoidance. This study supports the application of social learning theory in the formation of PEB regarding the importance of the synergy of individual determinants (including outcome expectancies and self-efficacy), the environment, and the behavior. Students had limited control which was largely determined by the environmental role. The dynamics were more complex when students seemed to have control but felt conflicted because they should fulfill needs that did not actually support PEB. Implications for practice and future studies are discussed further.</em></p> <p> </p> <p><strong>Abstrak</strong></p> <p>Perilaku peduli lingkungan hidup atau Pro-Environmental Behavior (PEB) terbukti berkorelasi dengan sejumlah kualitas positif individu sehingga penting untuk dibangun sejak masa kanak-kanak. Pembentukan PEB bagi siswa sejak dini bersesuaian dengan kurikulum pendidikan sekolah dasar dan didukung penyelenggaraan Program Adiwiyata. Di sisi lain, wawasan dan perilaku siswa jauh dari harapan. Namun keterbatasan ini kurang dipahami dari perspektif siswa yang masih jarang diteliti. Penelitian ini bertujuan mendapat pemahaman komprehensif tentang PEB siswa di sekolah dasar yang menyelenggarakan Program Adiwiyata, menggunakan penelitian eksplanatori pendekatan campuran dan konkuren. Studi kuantitatif melibatkan 59 siswa terutama untuk menguji hubungan antara pengetahuan dan PEB, sedangkan studi kualitatif melibatkan 9 siswa. Hasilnya menunjukkan tidak ada hubungan antara pengetahuan dan PEB (Spearman’s rho=0,103; p=0,436). Analisis tematik dan korespondensi pada data kualitatif menghasilkan bahwa cakupan wawasan siswa hanya memenuhi tiga dari enam aspek PEB, berurutan dari yang terbesar: perilaku yang mewakili usaha konservasi, daur ulang, dan peniadaan limbah. Penelitian ini menunjukkan pentingnya faktor individu (termasuk harapan akan hasil dan efikasi diri), lingkungan, dan perilakunya yang saling mendukung. Penyelenggaraan program diharapkan dapat melibatkan semua siswa, menggunakan model edukasi yang menarik, menggunakan sarana prasarana terjangkau, melibatkan kerjasama orang tua, menetapkan target capaian, memonitor, menindak lanjuti hingga mengapresiasi keberhasilan siswa.</p> Dinni Asih Febriyanti, Amalia Rahmandani Copyright (c) 2024 Dinni Asih Febriyanti, Amalia Rahmandani https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/2346 Wed, 31 Jan 2024 00:00:00 +0700 Combined Land Subsidence Analysis in Jakarta Based on Ps-InSAR and MICMAC Methods https://ejournal.brin.go.id/JTL/article/view/1125 <p><em>Penurunan muka tanah menjadi salah satu masalah di kota-kota pesisir delta di dunia, seperti Jakarta. Di kota ini, penurunan tanah sudah merata di seluruh wilayah. Berbagai faktor penyebab penurunan muka tanah dapat menimbulkan dampak secara ekologi, ekonomi, maupun sosial. Dampak yang terjadi umumnya berupa retaknya bangunan dan perluasan banjir. Oleh karena itu, kami perlu melakukan pengukuran dan pemantauan secara cepat dan berkala. Persistent Scatterer Interferometry Synthetic Aperture Radar (PS-InSAR) ialah metode yang digunakan untuk mendeteksi besaran nilai penurunan muka tanah di daerah perkotaan. Metode ini mampu menghasilkan gambar SAR dari distribusi ribuan titik pantau identifikasi faktor penyebab penurunan muka tanah di Jakarta. Hasil PS-InSAR terdeteksi nilai laju penurunan muka tanah rata-rata sebesar -5,71 cm/tahun, yang dominan berada di wilayah Jakarta Utara dan Jakarta Barat. Terdapat beberapa faktor penyebab penurunan muka tanah, kami melakukan analisis faktor ini menggunakan metode MICMAC (Matrix of Cross Impact Multiplications Applied to a Classification). Metode ini membantu mengidentifikasi hubungan dan relevansi antar faktor penyebab penurunan muka tanah. Hasil metode ini menunjukkan bahwa eksploitasi air tanah berlebihan dan konsolidasi alami tanah aluvial sebagai faktor yang berpengaruh signifikan terjadinya penurunan muka tanah di wilayah Jakarta.</em></p> <p><strong>Abstract</strong></p> <p>Land subsidence is one of the problems in delta coastal cities in the world, such as Jakarta. In this city, land subsidence has been evenly distributed throughout the region. Various factors causing land subsidence can have ecological, economic, and social impacts. The impacts that occur generally include the cracking of buildings and the expansion of flooding. Therefore, we need to carry out measurements and monitoring quickly and regularly. Persistent Scatterer Interferometry Synthetic Aperture Radar (PS-InSAR) is a method used to detect the magnitude of land subsidence in urban areas. This method is capable of producing SAR images from the distribution of thousands of monitoring points to identify factors causing land subsidence in Jakarta. PS-InSAR results detected an average land subsidence rate of -5.71 cm/year, which was dominant in the North Jakarta and West Jakarta areas. Several factors cause land subsidence, we analyzed these factors using the MICMAC (Matrix of Cross Impact Multiplications Applied to a Classification) method. This method helps identify the relationship and relevance between factors causing land subsidence. The results of this method produce excessive groundwater exploitation and natural consolidation of alluvial soil as factors that have a significant influence on land subsidence in the Jakarta area.</p> Rendi Handika, Joko Widodo, Andrea Emma Pravitasari Copyright (c) 2024 Rendi Handika, Joko Widodo, Andrea Emma Pravitasari https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/1125 Wed, 31 Jan 2024 00:00:00 +0700 Perceptions of Consumers, Housing Supervisors, and Design Engineers of Public Housing on the Plumbing System https://ejournal.brin.go.id/JTL/article/view/3558 <p><em>Sistem perpipaan (plumbing) adalah sistem perpipaan pada sebuah gedung atau rumah yang terdiri dari air bersih, air limbah, dan air hujan. Mengingat pentingnya hal ini, pengetahuan tentang sistem plumbing perlu dimiliki oleh setiap stakeholder. Tujuan dari penelitian ini adalah untuk mengetahui persepsi konsumen, pengawas, dan pengetahuan perencana terhadap sistem plumbing pada perumahan rakyat dan juga untuk mengetahui kondisi sistem plumbing yang terpasang pada perumahan tersebut. Metode penelitian yang digunakan dalam penelitian ini adalah deskriptif kualitatif dengan pengumpulan data primer melalui survei terhadap pengembang perumahan rakyat di Solo, Semarang, Makassar, dan Palembang. Hasil penelitian menunjukkan bahwa pengetahuan konsumen tentang sistem plumbing pada bangunan rumah kurang baik. Sementara itu, pengetahuan perencana dan pengawas rumah tentang sistem perpipaan sudah baik. Perencana dan pengawas bangunan tahu bahwa ada peraturan dan standar mengenai sistem dan peralatan plumbing. Namun, standar nasional SNI 8153:2015 tentang sistem plumbing belum sepenuhnya diterapkan di perumahan. Penyediaan rumah dengan harga terjangkau berdampak pada penggunaan peralatan dan sistem plumbing. Spesifikasi peralatan yang digunakan belum dapat secara optimal memenuhi standar yang ada, karena harus mempertimbangkan biaya produksi pembangunan rumah dan harga jual rumah tersebut. </em></p> <p><strong>Abstract</strong></p> <p>The plumbing system is a piping system in a building or house consisting of clean water, wastewater, and rainwater. Given the importance of this, knowledge of the plumbing system needs to be owned by every stakeholder. The purpose of this study was to determine the perceptions of consumers, supervisors, and design engineers knowledge of the plumbing system in public housing and also to determine the condition of the plumbing system installed in the housing. The research method used in this research was descriptive qualitative, with primary data collection through surveys of the public housing developers in Solo and Semarang, Makassar, and Palembang. The results show that the consumer's knowledge of the plumbing system in house buildings was not good. Meanwhile, the knowledge of design engineers and supervisors regarding the plumbing system was good; design engineers and supervisors knew that there are rules and standards regarding plumbing systems and equipment. However, the national standard SNI 8153:2015 regarding the plumbing system had not been fully applied in housing. The provision of housing at affordable prices has an impact on the use of plumbing equipment and systems. The specifications of the equipment used cannot optimally meet existing standards because they must consider the production costs of house construction and the selling price of the house.</p> Danar Agus Susanto, Utari Ayuningtyas, Evan Buwana, Tantri Emelia Copyright (c) 2024 Danar Agus Susanto, Utari Ayuningtyas, Evan Buwana, Tantri Emelia https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3558 Wed, 31 Jan 2024 00:00:00 +0700 Back Cover JTL Vol. 25 No. 1 Januari 2024 https://ejournal.brin.go.id/JTL/article/view/3564 Back Cover JTL Vol. 25 No. 1 Januari 2024 Copyright (c) 2024 Back Cover JTL Vol. 25 No. 1 Januari 2024 https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3564 Wed, 31 Jan 2024 00:00:00 +0700 Inside Cover JTL Vol. 25 No. 1 Januari 2024 https://ejournal.brin.go.id/JTL/article/view/3569 Inside Cover JTL Vol. 25 No. 1 Januari 2024 Copyright (c) 2024 Inside Cover JTL Vol. 25 No. 1 Januari 2024 https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3569 Wed, 31 Jan 2024 00:00:00 +0700 Front Cover JTL Vol. 25 No. 1 Januari 2024 https://ejournal.brin.go.id/JTL/article/view/3563 Front Cover JTL Vol. 25 No. 1 Januari 2024 Copyright (c) 2024 Front Cover JTL Vol. 25 No. 1 Januari 2024 https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3563 Wed, 31 Jan 2024 00:00:00 +0700 Preface JTL Vol. 25 No. 1 Januari 2024 https://ejournal.brin.go.id/JTL/article/view/3570 Preface JTL Vol. 25 No. 1 Januari 2024 Copyright (c) 2024 Preface JTL Vol. 25 No. 1 Januari 2024 https://creativecommons.org/licenses/by-sa/4.0 https://ejournal.brin.go.id/JTL/article/view/3570 Wed, 31 Jan 2024 00:00:00 +0700