A new strain Acidithiobacillus albertensis BY-05 for bioleaching of metal sulfides ores  

作　　者：夏金兰 彭安安 何环 杨宇 刘学端 邱冠周 

机构地区：[1]Key laboratory of Biometallurgy of Ministry of Education,School of Minerals Processing and Bioengineering, Central South University

出　　处：《中国有色金属学会会刊：英文版》2007年第1期168-175,共8页Transactions of Nonferrous Metals Society of China

基　　金：Project(50321402)supported by the National Natural Science Foundation of China;Project(2004CB619204)supported by the NationalBasic Research Program of China

摘　　要：An acidophilic,rod-shaped Gram-negative sulfur oxidizing strain BY-05 was isolated from an acid mine drainage of copper ore in Baiyin area,Gansu Province,China.Ultrastructural studies show that the isolate has a tuft of polar flagella and possesses sulfur granules with clear membrane adhering to the cell innermembrane.Physiological study shows that this isolate grows autotrophically and aerobically by oxidizing S0and reduced inorganic sulfur compounds(SO, 2 23-SO, 2 24- S2 -and ZnS)with the optimum growth at pH 3.5-4.0 and at the temperature range of 25-30℃.The 16S rRNA gene sequence(DQ 423683)of strain BY-05 has 100%sequence similarity to that of Acidithiobacillus albertensis(DSM 14366).So it is identified and named as A. albertensis BY-05.Bioleaching experiments with this new strain show that it can play an important role in recovery of metals from chalcopyrite and sphalerite.An acidophilic, rod-shaped Gram-negative sulfur oxidizing strain BY-05 was isolated from an acid mine drainage of copper ore in Baiyin area, Gansu Province, China. Ultrastructural studies show that the isolate has a tuft of polar flagella and possesses sulfur granules with clear membrane adhering to the cell irmermembrane. Physiological study shows that this isolate grows autotrophically and aerobically by oxidizing So and reduced inorganic sulfur compounds （S2O3^2-, S2O4^2-, S^2- and ZnS） with the optimum growth at pH 3.5-4.0 and at the temperature range of 25-30 ℃. The 16S rRNA gene sequence （DQ 423683） of strain BY-05 has 100% sequence similarity to that of Acidithiobacillus albertensis （DSM 14366）. So it is identified and named as A. albertensis BY-05. Bioleaching experiments with this new strain show that it can play an important role in recovery of metals from chalcopyrite and sphalerite.

关 键 词：硫化物 矿石 生物浸取 金属 选矿工艺 黄铁矿 

分 类 号：TF18[冶金工程—冶金物理化学]