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The Use of Magnesium Thiosulfate Solution to Leach Gold from Disposed Cell Phones

  • 2025
  • OriginalPaper
  • Chapter
Published in:
Authors
T. L. Akpomejero Corresponding author

Corresponding author T. L. Akpomejero

  • Department of Materials Science and Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
Corresponding author tlakpomejero@pg-student.oauife.edu.ng
M. D. Shittu

M. D. Shittu

  • Department of Materials Science and Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
D. A. Isadare

D. A. Isadare

  • Department of Materials Science and Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
B. Aremo

B. Aremo

  • Department of Materials Science and Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
K. E. Oluwabunmi

K. E. Oluwabunmi

  • Department of Mechanical Engineering, College of Engineering, University of North Texas, Denton, USA
Published in
Cross-Cutting Symposia
Publisher
Springer Nature Switzerland

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Abstract

This study explores the extraction of gold from disposed cell phones using magnesium thiosulfate solution, a method that is both environmentally friendly and economically viable. The research involves the disassembly and pulverization of PCBs, followed by base metal leaching and subsequent gold leaching with magnesium thiosulfate. The process is optimized through the use of additives like ammonia and copper (II) sulfate, achieving significant gold extraction rates. Electrowinning is employed to recover gold from the leachate, with the results analyzed using SEM/EDX. The study concludes that magnesium thiosulfate solution is a promising alternative to traditional cyanidation methods, offering a sustainable approach to gold recovery from electronic waste. Additionally, the presence of other valuable metals and non-metals in PCBs is highlighted, suggesting further opportunities for resource recovery.
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previous chapter The Effect of Temperature on Solubility and Insolubility of Compounds During Monazite Sulfuric Acid Baking: A Mini-Review
next chapter An Eco-Friendly Approach for Gallium Recovery from Aqueous Solutions Using Immobilized Siderophores
Title
The Use of Magnesium Thiosulfate Solution to Leach Gold from Disposed Cell Phones
Authors
T. L. Akpomejero
M. D. Shittu
D. A. Isadare
B. Aremo
K. E. Oluwabunmi
Copyright Year
2025
Book
Cross-Cutting Symposia

Print ISBN: 978-3-032-00181-8

Electronic ISBN: 978-3-032-00182-5

Copyright Year: 2025

DOI
https://doi.org/10.1007/978-3-032-00182-5_13
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