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Title:
METHOD FOR METAL CONCENTRATION, METHOD FOR METAL RECOVERY, DEVICE FOR METAL CONCENTRATION, AND DEVICE FOR METAL RECOVERY
Document Type and Number:
WIPO Patent Application WO/2014/112637
Kind Code:
A1
Abstract:
The purpose of the present invention is to make it possible to easily concentrate a metal of a metal-ion-containing solution at a high efficiency and recover the metal from the metal-ion-containing solution at a high recovery efficiency. This method for metal concentration or metal recovery comprises: a reduction collection step in which a microorganism and an electron donor (B) are caused to act on a metal-ion-containing solution (W0) to reduce the metal ions to thereby convert the ions into fine metal particles and cause the microorganism to collect the fine metal particles therein, thereby obtaining a solution (W1) that contains the microorganism having the fine metal particles collected therein; a concentration step in which the solution (W1) is concentrated with a filtration membrane to obtain a concentrate (W2); and a returning step in which the concentrate (W2) is returned to the step (1) and circulated. This device for metal concentration or metal recovery comprises a reservoir part (2) in which the solution (W1) is reserved, a concentration part (3) in which the solution (W1) sent from the reservoir part (2) is concentrated with a filtration membrane, and a returning part (4) whereby the concentrate (W2) obtained by concentration in the concentration part (3) is returned to the reservoir part (2).

Inventors:
KONISHI YASUHIRO (JP)
SAITOH NORIZOH (JP)
ANBO TAKANORI (JP)
TERAZAWA KAORU (JP)
RYUNO KOICHIRO (JP)
NINOMIYA YASUHIRO (JP)
Application Number:
PCT/JP2014/051071
Publication Date:
July 24, 2014
Filing Date:
January 21, 2014
Export Citation:
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Assignee:
MITSUBISHI RAYON CO (JP)
UNIV OSAKA PREFECT PUBLIC CORP (JP)
International Classes:
C22B3/18; C12N1/00; C12N1/20; C12P3/00; C22B11/00; C22B58/00; C12R1/01
Domestic Patent References:
WO2012060417A12012-05-10
Foreign References:
JP2011190515A2011-09-29
JP2005194597A2005-07-21
JP2011026701A2011-02-10
JP2007113116A2007-05-10
JP2010162442A2010-07-29
JP2005238181A2005-09-08
JP2005298276A2005-10-27
Other References:
See also references of EP 2947163A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
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