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Method of separation and recovery of elements from radioactive liquid wastes 发明授权

2022-07-31 3710 1037K 0

专利信息

申请日期 2024-11-19 申请号 US10448222
公开(公告)号 US6843921B2 公开(公告)日 2005-01-18
公开国别 US 申请人省市代码 全国
申请人 Etsushu Kuraoka; Anyun Zhang; Mikio Kumagai; Masayuki Watanabe; Hirofumi Nakamura
简介 A method of separation and recovery of elements from radioactive liquid wastes, includes a step of bringing into contact a high-level radioactive liquid waste containing separation target elements including Americium, Curium, Zirconium, Molybdenum, Palladium and rare earth elements with solid absorbent containing organophosphorus compounds so that the separation target elements are absorbed in the solid absorbent, a step of bringing into contact the solid absorbent with an acidic solution containing diethylenetriaminepentaacetic acid so that Americium, Curium, Zirconium, Molybdenum, Palladium and heavy rare earth elements are eluted from the solid absorbent, and a step of bringing into contact the solid absorbent underwent the first elution step with water or dilute nitric acid so that light rare earth elements are eluted from the solid absorbent. With the method, elements, which include Americium, Curium, Zirconium, Molybdenum, Palladium and rare earth elements, are efficiently and economically separated and recovered from the radioactive liquid waste.


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