Title:
METHOD FOR COLLECTING PALLADIUM
Document Type and Number:
WIPO Patent Application WO/2015/083233
Kind Code:
A1
Abstract:
[Problem] To collect palladium from a palladium-containing liquid waste containing an inorganic sulfur oxide such as sodium sulfite at a high collection rate and with high efficiency without requiring the employment of a complicated procedure.
[Solution] A method for collecting palladium, which comprises the steps of: adjusting the pH value of a palladium-containing aqueous solution containing an inorganic sulfur oxide to 2 or lower; adding a reducing agent to the palladium-containing aqueous solution to reduce palladium; and adding a cationic surfactant to the palladium-containing aqueous solution to cause the agglutination and precipitation of reduced palladium to collect palladium.
Inventors:
TAKEDOMI AKIHITO (JP)
Application Number:
PCT/JP2013/082463
Publication Date:
June 11, 2015
Filing Date:
December 03, 2013
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
International Classes:
C22B11/00; C22B3/44; C22B7/00
Foreign References:
| JP2014019921A | 2014-02-03 | |||
| JP2001032025A | 2001-02-06 | |||
| JPH0769646A | 1995-03-14 | |||
| JPH11229052A | 1999-08-24 |
Attorney, Agent or Firm:
SHIMAZAKI Eiichiro (JP)
Eiichiro Shimazaki (JP)
Eiichiro Shimazaki (JP)
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