Separation of Ni(II),  Co(II),  Mn(II),  and Si(IV) from Synthetic Sulfate and Chloride Solutions by Ion Exchange

Thi Thu Huong Nguyen; Jiangxian Wen; Man Seung Lee

doi:10.7844/kirr.2022.31.3.73

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2022 Vol.31, Issue 3 Preview Page Next Page

Research Paper

Separation of Ni(II), Co(II), Mn(II), and Si(IV) from Synthetic Sulfate and Chloride Solutions by Ion Exchange 황산과 염산 합성용액에서 이온교환에 의한 니켈(II), 코발트(II), 망간(II) 및 실리케이트(IV)의 분리

30 June 2022. pp. 73-80

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Abstract

Reduction smelting of spent lithium-ion batteries at high temperature produces metallic alloys. Following solvent extraction of the leaching solutions of these metallic alloys with either sulfuric or hydrochloric acid, the raffinate is found to contain Ni(II), Co(II), Mn(II), and Si(IV). In this study, two cationic exchange resins (Diphonix and P204) were employed to investigate the loading behavior of these ions from synthetic sulfate and chloride solutions. Experimental results showed that Ni(II), Co(II), and Mn(II) could be selectively loaded onto the Diphonix resin from a sulfate solution of pH 3.0. With a chloride solution of pH 6.0, Mn(II) was selectively loaded onto the P204 resin, leaving Ni(II) and Si(IV) in the effluent. Elution experiments with H₂SO₄ and/or HCl resulted in the complete recovery of metal ions from the loaded resin.

Keywords

spent lithium-ion battery

purification

recovery

ion exchange

폐리튬이온전지를 고온에서 용융환원하면 금속혼합물을 얻을 수 있다. 금속혼합물을 황산이나 염산으로 침출한 다음 용매추출로 분리한 여액에는 니켈(II), 코발트(II), 망간(II)과 실리케이트(IV)가 함유되어 있다. 본 논문에서는 양이온교환수지인 Diphonix와 P204를 사용하여 황산과 염산 합성용액에 함유된 상기 이온들의 이온교환거동을 조사했다. 용액의 pH가 3인 황산용액에서 니켈(II), 코발트(II)와 망간(II)이 선택적으로 Diphonix에 흡착되었다. 용액의 pH가 6인 염산용액에서는 망간(II)이 P204수지에 선택적으로 흡착되어 분리가 가능했다. Diphonix와 P204에 흡착된 금속이온은 황산이나 염산용액으로 세출할 수 있었다.

키워드

폐리튬이온전지

정제

회수

이온교환

References

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 31
No :3
Pages :73-80
Received Date : 2022-05-04
Revised Date : 2022-06-05
Accepted Date : 2022-06-07
DOI :https://doi.org/10.7844/kirr.2022.31.3.73

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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