摘要
研究了布氏酸菌浸出紫金山铜矿过程的特性. 考察了初始pH、接种量和矿浆浓度对浸出率的影响,表明布氏酸菌浸出的最佳操作条件为pH 2.0、接种量10%、矿浆浓度5%. 探讨了布氏酸菌的浸出机理,紫金山铜矿的浸出是细菌直接氧化和Fe3+化学氧化复合作用的结果. 布氏酸菌(65oC)对紫金山铜矿的浸出能力强,是氧化亚铁硫杆菌(31℃)的1.7倍,具有良好的工业应用前景.
Characteristics of Zijin copper ore bioleaching by Acidianus brierleyi were studied. Experriments estimated the effects of initial pH, inoculum and solid concentration on fraction of leached copper, experimental data showed that the optimal opertating conditions were pH 2.0, 10% inoculum and 5% solid concentrations. The mechanism of bioleaching of Zijin copper ore by Acidianus brierleyi was discussed, the bioleaching of Zijin copper ore by Acidianus brierleyi was the result of a complex process of direct microbial attack and chemical oxidation by the ferric iron. The bioleachig capability of Acidianus brierleyi(65oC) with the Zijin copper ore was strong, 1.7 times as high as that of Thiobacillus ferrooxidans (31℃). Acidianus brierleyi has a promising perspective of industrial application.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2004年第6期519-524,共6页
The Chinese Journal of Process Engineering
关键词
生物浸出
布氏酸菌
嗜酸嗜热菌
紫金山铜矿
bioleaching
Acidianus brierleyi
acidophilic thermophile
Zijin copper ore
