Title:
An extraction method of a lead ion, and an extract agent of a lead ion
Document Type and Number:
Japanese Patent JP6108376
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an extraction method of lead ions and an extracting agent of lead ions capable of selectively and efficiently extracting and separating lead ions.SOLUTION: An extract phase containing diglycolamide acid to be expressed by a general formula (1) (in the formula, Rand Rdenote alkyl groups identical to or different from each other, and at least one of them denotes a straight-chain or branched-chain alkyl group having the carbon number of ≥6), and aqueous solution containing lead ions and other metal ions than the lead ions are brought into contact with each other under the acid condition of ≤pH 6, and the lead ions are extracted to the extract phase. Thereafter, the extract phase is brought into contact with acid aqueous solution, the lead ions are subjected to back extraction to the acid aqueous solution, and the lead ions are collected.
Inventors:
Kojiro Shimojo
Hirochika Naganawa
Hirochika Naganawa
Application Number:
JP2012072141A
Publication Date:
April 05, 2017
Filing Date:
March 27, 2012
Export Citation:
Assignee:
Japan Atomic Energy Agency
International Classes:
B01D11/04; C22B3/26; C22B7/00; C22B13/00
Domestic Patent References:
| JP9314087A | ||||
| JP2007327085A | ||||
| JP55075921A |
Other References:
Holger Stephan等,LIQUID-LIQUID EXTRACTION OF METAL IONS WITH AMIDO,SOLVENT EXTRACTION AND ION EXCHANGE,1991年 1月 8日,9(3),459-469
Attorney, Agent or Firm:
Toshio Nishizawa
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