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A Newly Acidophilic Bacterium Acidomyces acidothermus Was Isolated to Efficiently Bioleach Copper from Waste Printed Circuit Boards (WPCBs)

Author

Listed:
  • Xiafei Yin

    (Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China)

  • Xuan Shan

    (Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China)

  • Guobin Liang

    (Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China)

  • Quanfa Zhou

    (Jiangsu Province Engineering Research Center of Ex-Service PV Module Resourceful Utilization, Changzhou Institute of Technology, Changzhou 213032, China)

  • Wei Lin

    (Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China
    School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, China)

Abstract

An acidophilic metal-resistant bacterial strain, Acidomyces acidothermus ( A . acidothermus ), was isolated and identified by morphology, physiology, biochemistry, and 16S rDNA. A . acidothermus culture conditions were optimized by response surface methodology (RSM). Results showed that with a temperature of 40 °C, a pH of 3 in a 9k medium, and a rotation speed of 140 r/min, the copper leaching rate reached the highest value of 39.8%. Furthermore, SEM images and a heatmap of differential metabolites indicated that A. acidothermus adsorbed on the surface of WPCBs and extracellular polymeric substances (EPS), mainly D-glucuronic acid, were secreted, suggesting the highly efficient mechanism of copper recovery from WPCBs.

Suggested Citation

  • Xiafei Yin & Xuan Shan & Guobin Liang & Quanfa Zhou & Wei Lin, 2023. "A Newly Acidophilic Bacterium Acidomyces acidothermus Was Isolated to Efficiently Bioleach Copper from Waste Printed Circuit Boards (WPCBs)," Sustainability, MDPI, vol. 15(3), pages 1-17, February.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2709-:d:1055574
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    Cited by:

    1. Xiafei Yin & Xuan Shan & Wei Shao & Lixue Liu & Guobin Liang & Quanfa Zhou & Wei Lin, 2023. "Copper from Waste Printed Circuit Boards Was Effectively Bioleached Using Newly Isolated Microorganisms and Subsequently Recovered by Microbial Fuel Cell," Sustainability, MDPI, vol. 15(13), pages 1-15, June.

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