Influence of silver ions on bioleaching of cobalt from spent lithium batteries

Guisheng Zeng, Shenglian Luo*, Xiaorong Deng, Lei Li, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

The influence of silver ions (Ag+) on the bioleaching of cobalt from spent lithium batteries using Acidithiobacillus ferrooxidans (A. ferrooxidans) bacteria was investigated. The best effect was observed at Ag + concentration of 0.02 g/L, and the amount of leached cobalt was 98.4% in a period of 7 days, whereas in the absence of Ag+, the amount of leached cobalt was only 43.1%. Based on the results of SEM, XRD and EDX investigation, it is deduced that Ag+ first reacted with cobalt to form AgCoO2 as an intermediate. A mechanism that is based on catalytic interactions is proposed to explain the enhanced leaching of Co using A. ferrooxidans.

Original languageEnglish
Pages (from-to)40-44
Number of pages5
JournalMinerals Engineering
Volume49
DOIs
Publication statusPublished - 2013

Scopus Subject Areas

  • Control and Systems Engineering
  • Chemistry(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

User-Defined Keywords

  • Bioleaching
  • Catalyst
  • Silver
  • Spent lithium batteries

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