Invention Grant
- Patent Title: Adsorbent for rare earth element and method for recovering rare earth element
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Application No.: US14862866Application Date: 2015-09-23
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Publication No.: US10023937B2Publication Date: 2018-07-17
- Inventor: Takeshi Ogata , Mikiya Tanaka
- Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Applicant Address: JP Tokyo
- Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Current Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2013-061922 20130325; JP2013-174697 20130826
- Main IPC: C22B59/00
- IPC: C22B59/00 ; C22B3/24 ; B01J20/26 ; B01J20/34 ; B01J20/30 ; B01J20/10 ; C02F1/28 ; B01J20/32 ; B01J20/22 ; C08F110/02 ; C08F110/06 ; C08G73/02 ; C22B7/00 ; C08K3/36 ; C02F101/10

Abstract:
An adsorbent for rare earth element and a method for recovering a rare earth element, in which a rare earth element contained in an aqueous solution can be simply and inexpensively adsorbed and recovered, and a rare earth element present in an aqueous solution in combination with a base metal can be selectively adsorbed and recovered. The adsorbent includes a base material and diglycolamic acid introduced into the base material. The method for recovering a rare earth element includes steps of: bringing an aqueous solution containing a rare earth element into contact with the adsorbent for rare earth element to allow the rare earth element to be adsorbed on the adsorbent for rare earth element; and desorbing the rare earth element adsorbed on the adsorbent for rare earth element with an acid of 1 N or less.
Public/Granted literature
- US20160010178A1 ADSORBENT FOR RARE EARTH ELEMENT AND METHOD FOR RECOVERING RARE EARTH ELEMENT Public/Granted day:2016-01-14
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