PENGEMBANGAN KIMIA AIR PENDINGIN REAKTOR
DOI:
https://doi.org/10.17146/jsmi.2005.6.3.4835Keywords:
Metode Voltametri, Voltammetric Methods, Zeolit, Zeolite, Absorpsi, Absorption, Kimia Air, Water ChemicalAbstract
PENGEMBANGAN KIMIA AIR PENDINGIN REAKTOR. Pengelolaan kimia air pendingin yang meliputi pengamatan kandungan ion-ion dalam air, perilaku korosi logam-paduan logam dalam air serta proses pemurnian air pendingin sangat mendukung dalam pemeliharaan keselamatan reaktor nuklir. Dalam penelitian ini telah dipelajari beberapa metode voltametri untuk penentuan ion-ion Cu ,Cd ,Pb ,Zn, Fe dan Mn dalam air, serta unjuk kerja zeolit alam dalam mengadsorpsi ion-ion tersebut sebagai langkah awal dalam pengembangan kimia air pendingin reaktor nuklir. Unjuk kerja metode voltametri untuk penentuan ion-ion tersebut adalah prosen perolehan kembali berkisar (94,39 - 102,66)% dengan simpangan baku relatif (RSD) berkisar (1,62 - 9,23) %. Zeolit alam tanpa aktivasi secara kimia dapat menyerap ion-ion yang dipelajari dengan baik, dengan prosen penyerapan di atas 85%, kecuali untuk Zn hanya 44% dan Mn hanya 21%. Aktivasi dengan NaOH atau KOH dapat meningkatkan daya serap zeolit terhadap Zn dan Mn sampai di atas 80%, sedangkan aktivasi dengan HCl umumnya menurunkan daya serap kecuali untuk Pb dan Fe. Aktivasi dengan NH4Cl dapat menaikkan daya serap terhadap Zn di atas 80% dan Mn di atas 60%.
ABSTRACT
CHEMICAL DEVELOPMENT OFTHE WATER COOLING REACTOR. The chemical management of cooling water reactor comprises the controlling content of ions, corrosion behaviour of metal in the water and purification process of cooling water reactor are very important to take care of nuclear reactor safety. The voltammetric methods for determination of ions Cu ,Cd ,Pb ,Zn, Fe and Mn in water, and the performance of natural zeolite to adsorpt these ions have been studied, as a begining step in the nuclear reactor water chemistry development. The performance of voltammetric methods for ion analyts is the present of recovery in the range of 94,39 - 102,66% with relative standard deviation (RSD) of 1,62 - 9,23 %. The natural zeolite without any chemical activation can absorpt with good result of studied ions over than 85 % wit the exeption for Zn: only 44% and Mn: only 21%. The zeolite activation with NaOH or KOH can increase the adsorption of Zn and Mn
up to more than 80%, whereas activation with HCl in general decrease the adsorption exepth for Pb and Fe. The zeolite activation with NH4Cl can enhance the adsorption for Zn over than 80% and Mn over than 60%.
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