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先進オリエントサイクル研究(Phase I),2; レアメタルの分離,1; 白金族及びTc, Re

Advanced ORIENT cycle study (Phase I), 2; Separation of rare metal, 1; PGMs, Tc and Re

山岸 功 ; 小山 真一  ; 小澤 正基; 金村 祥平*; 水口 浩司*; 大森 孝*

Yamagishi, Isao; Koyama, Shinichi; Ozawa, Masaki; Kanamura, Shohei*; Mizuguchi, Koji*; Omori, Takashi*

高レベル廃液中に含まれるPd, Ru, Rh, Tcなどのレアメタル核分裂生成物(レアメタルFP)を電解還元法により回収し、回収したレアメタルFPを水素製造用の触媒電極として利用することを検討している。硝酸系模擬高レベル廃液から88.1%のPdを、塩酸系廃液からはRu, Rh及びRe(Tc模擬物質)の77.8, 94.8及び85.2%を電解析出できた。

Electro-deposition of light platinum group metals, PGMs (Ru, Rh and Pd), and Tc from high-level liquid waste (HLLW) has been studied for development of an advanced nuclear fuel cycle (Adv.-ORIENT Cycle). PGMs and Tc deposited on Pt electrode are to be used for hydrogen production by catalytic electrolysis of water with its electrode. In nitric acid media, 88.1% of Pd were deposited form a simulated HLLW. In hydrochloric acid media, deposition ratios of Ru, Rh and Re (Tc simulator) were 77.8, 94.8 and 85.2%, respectively.

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