Title:
METHOD FOR RECOVERING METAL FROM METAL ELEMENT-CONTAINING SUBSTANCE
Document Type and Number:
WIPO Patent Application WO/2023/032811
Kind Code:
A1
Abstract:
This method for recovering a metal from a metal element-containing substance comprises: a step in which a solution containing metal ions or metal complex ions is obtained by bringing a dissolution liquid that contains nitric acid and a salt into contact with the metal element-containing substance; and a step in which a metal is generated by immersing algae in the solution containing metal ions or metal complex ions. With respect to this method for recovering a metal from a metal element-containing substance, the concentration of the nitric acid in the dissolution liquid that contains nitric acid and a salt is 2% by mass to 50% by mass, and the concentration of the salt in the dissolution liquid that contains nitric acid and the salt is 0.5% by mass or more.
Inventors:
FUKUSHIMA YASUYUKI (JP)
Application Number:
PCT/JP2022/032077
Publication Date:
March 09, 2023
Filing Date:
August 25, 2022
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
C22B3/18; B01J20/22; C12N1/12; C22B3/06; C22B11/00
Domestic Patent References:
| WO2009130006A1 | 2009-10-29 | |||
| WO2018155687A1 | 2018-08-30 |
Foreign References:
| JP2017061739A | 2017-03-30 | |||
| JP2013067826A | 2013-04-18 |
Other References:
JU XIAOHUI; IGARASHI KENSUKE; MIYASHITA SHIN-ICHI; MITSUHASHI HIROAKI; INAGAKI KAZUMI; FUJII SHIN-ICHIRO; SAWADA HITOMI; KUWABARA : "Effective and selective recovery of gold and palladium ions from metal wastewater using a sulfothermophilic red alga,Galdieria sulphuraria", BIORESOURCE TECHNOLOGY, ELSEVIER, AMSTERDAM, NL, vol. 211, 23 April 2016 (2016-04-23), AMSTERDAM, NL , pages 759 - 764, XP029520471, ISSN: 0960-8524, DOI: 10.1016/j.biortech.2016.01.061
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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