文献类型：会议论文

英文题名：Optimizing of silver-catalyzed bioleaching of low-grade copper ores from Yongping, China

作者：Qiu, Muqing[1];Huang, Chengcai[1]

机构：[1]Shaoxing Univ, Coll Life Sci, Shaoxing 312000, Peoples R China

会议论文集：4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE)

会议日期：JUN 18-20, 2010

会议地点：Chengdu, PEOPLES R CHINA

语种：英文

外文关键词：silver-catalyzed bioleaching; optimization; microorganisms; process parameters

外文摘要：The effect of process parameters (pH, pulp density, inoculum volume of the nutrient medium, silver content) on the rate of copper solubilization was analyzed respectively through silver-catalyzed bioleaching experiments with microorganisms in shake flasks. These results show that the optimal process parameters are: pulp density, 2.5 wt%; silver content, 10mg/L; pH, 1.50-1.80; inoculum volume of the nutrient medium, 40vol%. Furthermore, the addition of the silver could catalyze the process of bioleaching, and high silver concentrations would be harmful to the bacterial activity and the copper extraction. pH and inoculum volume of the nutrient medium had a marked influence on the copper extraction and iron extraction. The bioleaching of the low-grade copper ore requires a minimum amount of the nutrient medium to obtain the maxium efficiency. illustrated by the portions given in this document.