Recycling of the Spent Nickel-Cadmium Batteries Based on Bioleaching Process

Authors

Liang-shu XIA, School of Chemistry and Chemical Engineering,Nanhua University,Hengyang 421001,Hunan,China;
Shi-fu FU, School of Chemistry and Chemical Engineering,Nanhua University,Hengyang 421001,Hunan,China;
Zhong-qing CHEN, School of Chemistry and Chemical Engineering,Nanhua University,Hengyang 421001,Hunan,China;

Corresponding Author

Liang-shu XIA

Abstract

Less than 1 percent of discarded dry batteries are recovered in china.it is necessary to find an economic,fast and environmentally friendly process to recycle spent dry batteries.Bioleaching is better one of the few technology applied for the recovery of the toxic metals from hazardous spent batteries.In this study,after the acidified sludge made by the inoculated and cultured indigenous sewage sludge was acted as leaching bacteria species,the influence of the different pH values,the different residence time of the sludge in bioreactor(RTB),the leaching time,whether or not adding Fe(iron powder) to the leaching liquid on the leaching rate of Ni,Cd was tested.The results show that the leaching rate of Ni,Cd in the spent Ni-Cd batteries reaches to 86.4 percent and 87.6 percent respectively under the conditions of the pH value of 1.8~2.1,RTB of 5d,the leaching time of 50d,1 percent Fe~(0) added in the leaching liquid,So scientific bases can be provided for the industrial produce.

Keywords

Ni-Cd battery, Bioleaching process, Environmental pollution, Sewage sludge

DOI Link

https://doi.org/10.61558/2993-074X.1751

Publication Date

2006-08-28

Online Available Date

2006-08-28

Revised Date

2006-08-28

Received Date

2006-08-28

Recommended Citation

Liang-shu XIA, Shi-fu FU, Zhong-qing CHEN. Recycling of the Spent Nickel-Cadmium Batteries Based on Bioleaching Process[J]. Journal of Electrochemistry, 2006 , 12(3): 345-348.
DOI: 10.61558/2993-074X.1751
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss3/23

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