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Title of article :
The bioleaching feasibility for Pb/Zn smelting slag and community characteristics of indigenous moderate-thermophilic bacteria
Author/Authors :
Cheng، نويسنده , , Yi and Guo، نويسنده , , Zhaohui and Liu، نويسنده , , Xueduan and Yin، نويسنده , , Huaqun and Qiu، نويسنده , , Guanzhou and Pan، نويسنده , , Fengkai and Liu، نويسنده , , Hongwei، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
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Abstract :
The feasibility of recovering metal values and removing hazardous elements from the Pb/Zn smelting slag using bioleaching technique were studied through a flask experiment, and the community characteristics of the indigenous moderate-thermophilic bacteria in this bioleaching system were also analyzed through a culture-independent restriction fragment length polymorphism (RFLP) of 16S rRNA genes approach. The results show that more than 80% of Al, As, Cu, Mn, Fe and Zn in the Pb/Zn smelting slag were leached at 65 oC, pH 1.5, pulp density 5%, but only about 5% of Pb. Phylogenetic analysis revealed that the bacteria in the bioleaching system mainly fell among Firmicutes, Gammaproteobacteria and Betaproteobacteria, and the dominant bacteria are affiliated with Bacillus spp., Sporosarcina spp. and Pseudomonas spp.
Keywords :
Moderate-thermophilic bacteria , Bioleaching , 16S rRNA-RFLP , Pb/Zn smelting slag , Phylogenetic analysis
Journal title :
Bioresource Technology
Journal title :
Bioresource Technology
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