Bioleaching of primary chalcopyrite by A. caldus and S. thermosulfidooxidans

摘要：

Acidithiobacillus caldus S, and Sulfobacillus thermosulfidooxidans St were used to study the bioleaching of a low-grade primary chalcopyrite. At a constant pH and temperature, the addition of organic matter promoted copper extraction. The succession of the microbial community during the leaching process was analyzed by RT-PCR. The analysis showed that S, strain alone was less efficient than St for leaching chalcopyrite. The 24 d copper leaching rates were 19.25％ and 13.75％. When A. caldus was mixed with S. thermosulfidooxidans, the copper leaching rate increased to 33. 76％ . St strain performed better in leaching pyrite, with a sterile solution 9. 003 times the leaching.

关键词： bioleaching low-grade primary chalcopyrite microbial community succession

作者: Yuting Liang Wenqing Qin Huaqun Yin Xueduan Liu

作者单位: Key Laboratory of Biometallurgy, Ministry of Education, Central South University, 410083, Changsha, School of Resource Processing and Bioengineering, Central South University, 410083, Changsha, China

会议类型: 国际会议

会议名称: The 19th International Biohydrometallurgy Symposium(第19届国际生物湿法冶金大会 IBS2011)

会议地点: 长沙

会议语种:英文

页码: 179-181

在线出版日期: 2011-09-18（万方平台首次上网日期，不代表论文的发表时间）