Corresponding Author

Liang-shu XIA


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.


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

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[1]The State Environm ental Protection Adm in istration ofCh ina.Policy for recyc ling spent batteries w ill be es-tab lished[J].Environm ental and Healthy Engineering.2000,8(1):6.
[2]Jain D K,Taygi R D.Leach ing of heavy m etals fromanaerob ic sewage sludge by su lfur-oxid izing bacteria[J].Enzym e M icrob.Technol.,1992,14:376~380.
[3]Hu Jiajun(胡家骏),Zhou Qunying(周群英).M icrob i-ology of Environm ental Engineering[M].Be ijing:H igh-er Education Press,2000:38~50.
[4]Xu W e ichang(徐伟昌).App lication of B iotechology inNuc lear Industry[M].Changsha:National Un iversity ofDefense Technology Press,2002:14~16.
[5]CurutchetG,Donati E,Tedesco P.Influence of quartz inthe b ioleach ing of covellite[J].B iorecovery,1990,1:19~25.



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