Title:
【発明の名称】水溶液中の4価のセリウムの除去法
Document Type and Number:
Japanese Patent JPS5826419
Kind Code:
B2
Abstract:
PURPOSE:To efficiently remove tetravalent Ce contained in an aq. soln. by holding the soln. in a specified pH range; adding polyacrylamide to the soln.; and separating solid matter formed. CONSTITUTION:Hydrochloric acid or the like is added to an aq. soln. contg. tetravalent Ce and cpds. of Y, etc. to hold the soln. at pH 2-6. About 0.1-5ppm polyacrylamide is added to the soln. of pH 2-6 and stirred to prcipitate tetravalent Ce-contg. solid matter, which is then separated by filtration or other operation. This treatment is carried out at about ordinary temp. for 1min or more, pref. 5- 30min. By this method tetravalent Ce can be removed simply and efficiently without losing metals other than Ce.
More Like This:
Inventors:
KOJIMA KATSUMI
MIWA TAIICHIRO
MORI NOBUO
YAMADA TETSUO
MIWA TAIICHIRO
MORI NOBUO
YAMADA TETSUO
Application Number:
JP12447778A
Publication Date:
June 02, 1983
Filing Date:
October 09, 1978
Export Citation:
Assignee:
MITSUBISHI CHEM IND
International Classes:
C22B59/00; C01F17/00; C02F1/58; C02F1/62; (IPC1-7): C22B59/00
Attorney, Agent or Firm:
Hasegawa Hajime