Leaching of Metals from Waste Silver Oxide-Zinc Button Cell Batteries by Aspergillus niger

Umesh Jadhav; Chun-Hui Su; Mital Chakankar; Hong Hocheng

doi:10.3390/batteries4040051

Batteries (Oct 2018)

Leaching of Metals from Waste Silver Oxide-Zinc Button Cell Batteries by Aspergillus niger

Umesh Jadhav,
Chun-Hui Su,
Mital Chakankar,
Hong Hocheng

Affiliations

Umesh Jadhav: Department of Microbiology, Savitribai Phule Pune University, Pune 411007, India
Chun-Hui Su: Department of Power Mechanical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang Fu Rd., Hsinchu 30013, Taiwan
Mital Chakankar: Department of Power Mechanical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang Fu Rd., Hsinchu 30013, Taiwan
Hong Hocheng: Department of Power Mechanical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang Fu Rd., Hsinchu 30013, Taiwan

DOI: https://doi.org/10.3390/batteries4040051
Journal volume & issue: Vol. 4, no. 4
p. 51

Abstract

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Leaching of metals from waste button cell batteries was explored in this study. Aspergillus niger spent medium was used for metal leaching to avoid toxicity of metals toward microbial cells. Process parameters including time, temperature, shaking speed, and volume of the spent medium were optimized. We obtained 100% leaching of zinc and silver in six hours at 60 °C and 100 rpm using 15 mL spent medium. The use of spent medium supported the indirect leaching process. The organic acid produced by fungi acts as a lixiviant, aiding the metal leaching in this process.

Published in Batteries

ISSN: 2313-0105 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Production of electric energy or power. Powerplants. Central stations; Technology: Chemical technology: Industrial electrochemistry
Website: http://www.mdpi.com/journal/batteries

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