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›› 2014, Vol. 14 ›› Issue (3): 415-420.

• 反应与分离 • 上一篇    下一篇

铜砷滤饼废渣的生物浸出

杜娟 李媛媛 张广积 杨超   

  1. 中国科学院过程工程研究所 中国科学院过程工程研究所 中国科学院过程工程研究所 华中科技大学化学与化工学院
  • 收稿日期:2014-01-26 修回日期:2014-03-31 出版日期:2014-06-20 发布日期:2014-06-20
  • 通讯作者: 杜娟

Bioleaching of Cu-As-containing Filter Cake Waste

DU Juan LI Yuan-yuan ZHANG Guang-ji YANG Chao   

  1. Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, CAS Institute of Processing Engineering ，CAS School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology
  • Received:2014-01-26 Revised:2014-03-31 Online:2014-06-20 Published:2014-06-20
  • Contact: DU Juan

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摘要： 采用生物浸出法处理铜砷滤饼废渣，考察了pH值、温度和菌种对浸出效果的影响，分析了铁氧化菌浸出机理和将生物浸出用于含砷废渣无害化处理的可行性. 结果表明，微生物对铜砷滤饼浸出起促进作用，热酸预处理后在50℃、pH值为1.5的条件下，以中度嗜热西伯利亚硫杆菌(Sulfobacillus sibiricu)浸出7 d，砷浸出率达91.33%，铜浸出率达94.22%.

关键词: 铜砷滤饼, 生物浸出, 砷, 铜, 西伯利亚硫杆菌

Abstract: Bioleaching was used to treat Cu-As-containing filter cake. The effects of pH value, temperature and strain on the bioleaching rates of Cu and As were studied, and the bioleaching mechanism and feasibility of the harmless treatment of As-bearing residue with bioleaching analyzed. The results show that Sulfobacillus sibiricu enhanced the leaching process. The leaching of As and Cu was carried out by hot acid and then leaching with bacterial suspension, the optimum conditions with the strain were obtained as: temperature of 50℃ and pH value 1.5. Under the optimum conditions, the leaching rate of As and Cu reached 91.33% and 94.22% in 7 d, respectively.

Key words: Cu-As-containing filter cake, bioleaching, arsenic, copper, Sulfobacillus sibiricu

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