Title:
微生物による水溶液中からのプルトニウムおよびウランの逐次分離法
Document Type and Number:
Japanese Patent JP4654406
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To sequentially separate plutonium and uranium from aqueous solutions such as Pu-U containing high level radioactive waste solutions generated in a wet retreatment stage for used nuclear fuel in a nuclear power furnace, experimental waste solutions contaminated by Pu and U and radioactive waste solutions such as environmental water. SOLUTION: Pu(VI) in a highly acidic solution (pH of 0 to 1.5) is selectively reduced by using microorganisms such as Bacilli genus reducing hexavalent plutonium [Pu(VI)] to pentavalent plutonium [Pu(V)] without reducing U(VI) therein. Successively, tetravalent plutonium [Pu(IV)] generated by the dismutation of Pu(V) is adsorbed on the microorganisms from the inside of the acidic solution to selectively separate Pu(VI) from U(VI).
Inventors:
Koji Sakaguchi
Yoshiyuki Yoshida
Akihiro Kitatsuji
Toshio Aoyagi
Yoshiyuki Yoshida
Akihiro Kitatsuji
Toshio Aoyagi
Application Number:
JP2000360783A
Publication Date:
March 23, 2011
Filing Date:
November 28, 2000
Export Citation:
Assignee:
Japan Atomic Energy Agency
International Classes:
C22B3/18; G21C19/46; B01D57/00; C02F3/34; C12N1/20; C12P3/00; C22B60/02; C22B60/04; G21F9/06; G21F9/18; C12R1/07
Domestic Patent References:
| JP60091991A |
Attorney, Agent or Firm:
Kazuo Shamoto
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai
Fujihiro Kanda
Hideo Tanaka
Shinya Hosokawa
Norihiro Fukasawa
Koji Hirayama
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai
Fujihiro Kanda
Hideo Tanaka
Shinya Hosokawa
Norihiro Fukasawa
Koji Hirayama