:A Proposal of Multi-Step Processing and its Prospect

概要

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A new method of waste treatment of animal carcass contaminated with plutonium was proposed. A multi-step process was designed and tested at a laboratory scale which was composed of the following processes; microwave dehydration, heat decomposition and ashing.Microwave dehydration was found the most adequate as the first step of the treatment because of the negligible release of nonvolatile radioactivity. About 70% of body weight was reduced by microwave dehydration.Dehydrated animal carcass was decomposed by graded electric heating under anaerobic condition. Burnable gas and vapour produced by the heat decomposition were oxidized by passing through a reheating tube with excess air. The exhaust gas had no significant radioactivity.The residue of charred carcass was oxidized by heating with excess air. The weight of final product was up to 8% of original wet weight.The proposed multi-step process provided to be adequate for the waste disporsal of Pu contaminated animal carcass.
日本保健物理学会の論文