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Selective Separation of Metal Ions via Bipolar Membrane Electrodialysis Coupled with Chelation

Research Project

Project/Area Number 24656549
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Recycling engineering
Research InstitutionTohoku University

Principal Investigator

IIZUKA Atsushi  東北大学, 多元物質科学研究所, 助教 (70451862)

Research Collaborator NAKAMURA Takashi  東北大学, 多元物質科学研究所, 教授 (20112360)
SHIBATA Etsurou  東北大学, 多元物質科学研究所, 准教授 (70312650)
Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsリチウムイオン電池 / 選択的分離 / キレート剤 / バイポーラ膜 / 電気透析
Research Abstract

A new type of process for separating metals in solution is proposed, and applied to a mixed solution of lithium and cobalt, as in the recycling of waste lithium-ion batteries. When a chelating agent, ethylenediaminetetraacetic acid (EDTA), was added to a mixed solution of lithium ions and cobalt ions, almost all the cobalt ions were chelated by EDTA to form anions, whereas lithium ions were hardly chelated, at pH > 4. Electrodialysis of the feed solution was conducted using a three-cell-type electrodialysis system, with a unit consisting of two ion-exchange membranes and a bipolar membrane. Lithium was transported to the lithium recovery cell and cobalt was transported to the cobalt recovery cell, using an applied electric field. The selectivity for each metal in the recovery cell was about 99%. The separation system was also applied to Li-Co-Mn and In-Al systems, and its separation performance was studied.
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Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (1 results)

All 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] Separation of Lithium and Cobalt from Waste Lithium-ion Batteries via Bipolar Membrane Electrodialysis Coupled with Chelation2013

    • Author(s)
      Atsushi Iizuka, Yasunobu Yamashita, Hiroki Nagasawa, Akihiro Yamasaki, and Yukio Yanagisawa
    • Journal Title

      Separation & Purification Technology

      Volume: 113 Pages: 33-41

    • Related Report
      2013 Annual Research Report 2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed

URL: 

Published: 2013-05-31   Modified: 2019-07-29  

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