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《Journal of Northeastern University(Natural Science)》 2000-06
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Function of Bacterial Attachment on the Pre-Biooxidation of Arsenic-Bearing Gold Concentrate

LI Xiu yan,WEI De zhou,ZHENG Long xi (School of Resources and Civil Engineering, Northeastern University, Shenyang 110006,China)  
Measurements of bacterial protein were employed to study the influences of bacterial attachment on the pre biooxidation of an arsenic bearing gold concentrate using Thiobacillus ferrooxidans. The results show that the bacterial attachment on the mineral surfaces consists of three stages: attachment increasing stage,stable stage and detachment stage. The microbial activity is the most important factor to affect the attachment degree. The metal oxidation ratio has a linear relation with the quantity of the bacterial attachment. The quantity of the attachment and the bacterial activity have important influences on the metal oxidation,and the bacterial attachment is a premise of the microbial direct oxidation.
【Fund】: 国家自然科学基金资助项目! (5 97740 10 )
【CateGory Index】: TF80
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