EXTRACTION METHOD OF Am, Cm AND Ln EXISTING IN ACIDIC SOLUTION

Title:

EXTRACTION METHOD OF Am, Cm AND Ln EXISTING IN ACIDIC SOLUTION

Document Type and Number:

Japanese Patent JP2002001007

Kind Code:

A

Abstract:

To provide a method for efficiently extracting Am(III), Cm(III), and Ln(III) ions existing in an aqueous acidic solution, especially in a high level wastewater generated from recycling treatment of spent nuclear fuel.

Am, Cm and rare earth elements are extracted to an organic solvent, for example, n-dodecane, from a variety of aqueous solutions containing widely various nuclear species with an extraction agent of a diglycol amide compound containing two amido groups and having a structure in which these amido groups are bonded with a functional group, CH2-O-CH2, containing O in the ether form, that is, an extraction agent possible to form tridentate coordination and having the structural formula; R1R2NCOCH2OCH2CONR3R4 (wherein R1, R2, R3, and R4 are each separately an alkyl defined as CnH2n+1).

Inventors:

SASAKI YUJI
YAITA TAKESHI
NARITA KOICHI
TATEMORI KATSUICHI

Application Number:

JP2000186323A

Publication Date:

January 08, 2002

Filing Date:

June 21, 2000

Export Citation:

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Assignee:

JAPAN ATOMIC ENERGY RES INST

International Classes:

G21F9/06; B01D11/04; C22B3/26; C22B60/02; G21C19/46; (IPC1-7): B01D11/04; G21F9/06

Domestic Patent References:

JPH07239396A	1995-09-12
JP2002540061A	2002-11-26

Attorney, Agent or Firm:

Kazuo Shamoto (5 outside)

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