Abstract
One of the procedures to handle liquid radioactive waste is by filtration process. To do this process, suitable filter should be used because of radioactive nature of the waste. Ceramic filter is one of the suitable filters that could be used for this purpose. This paper will discuss about producing ceramic filter from local clay and test its performance. Performance of the filter is given by its flux, compressive strength, Decontamination Factor (DF) and adsorption efficiency. The results show that there are almost no effects of casting pressure on both flux and compressive strength of ceramic filter, but zeolite addition produces different effect. The higher concentration of zeolite will decrease the filter flux and increase filter compressive strength. The optimal composition from this research is 70% w/o clay-25% w/o zeolite-5% w/o charcoal. It has adsorption efficiency (60.36) and Decontamination Factor (2.52). Besides, Sr concentration after filtration is still higher than environmental standard for Sr-90 and more studies are still needed.
Highlights
Liquid radioactive wastes vary in solution composition and the radionuclide they contain
The research explores local material which is potential as ceramic filter to handle liquid radioactive waste
The research aim is to find an optimal composition of local clay-zeolite-charcoal and casting pressure that have high mechanical strength and good capability for adsorbing Sr component and have high flux that flows through it
Summary
Liquid radioactive wastes vary in solution composition and the radionuclide they contain. (2016) Indonesia’s Local Material Effect in Clay-Based Ceramic Filter Fabrication as an Alternative for Liquid Radioactive Waste Processing Material. Liquid wastes should be treatment for radioactive material removal or volume reduction as coagulation-sedimentation, filtration, evaporation, and ion exchange [1]. Liquid radioactive waste produced from radioactive waste reprocessing must be handling seriously because it contains fission products. It is hazardous and disperses in environment. Filtration adopted by a solid filter media belongs to a solid-liquid separation process which separates the liquid components and insoluble solid components from each other by allowing the original liquid waste to contact a filtering medium. Filter technologies that have been applied were Reverse Osmosis (RO) in Chalk Rivers Laboratory in Canada, ultrafiltration in Sellafield UK, RO-Ultrafiltration combination in Wolf Creek Nuclear Power Plant, nano-filtration in Bugey Nuclear Power Plant in France, and microfiltration in Chalk Rivers Laboratory in Canada [2]
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