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›› 2015, Vol. 15 ›› Issue (1): 132-136.

• 生化工程专栏 • 上一篇    下一篇

高碱性铜尾矿的黑曲霉生物浸出

刁宁宁 李广悦 王永东 杜康   

  1. 南华大学铀矿冶生物技术国防重点学科实验室 南华大学铀矿冶生物技术国防重点学科实验室 南华大学铀矿冶生物技术国防重点学科实验室
  • 收稿日期:2014-10-27 修回日期:2015-01-16 出版日期:2015-03-13 发布日期:2015-03-13
  • 通讯作者: 刁宁宁

Bioleaching of Copper from High Alkaline Copper Ore Tailings with Aspergillus niger

DIAO Ning-ning LI Guang-yue WANG Yong-dong DU Kang   

  1. School of Nuclear Resources Engineering，University of South China Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China
  • Received:2014-10-27 Revised:2015-01-16 Online:2015-03-13 Published:2015-03-13
  • Contact: DIAO Ning-ning

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摘要： 以湖南某高碱性铜尾矿为研究对象，进行了黑曲霉摇瓶浸出实验，研究了浸出时间和PSA培养基成分、含量对铜浸出的影响. 结果表明，浸出时间为7 d时，铜浸出率最高，随浸出时间延长，铜浸出率显著下降. PSA培养基中的马铃薯和蔗糖含量对铜浸出有明显影响，马铃薯含量为200 g/L、蔗糖含量为20 g/L时，铜浸出率最高. 在接种量0.02%(j)、矿浆浓度50 g/L、温度30℃、转速200 r/min、浸出时间7 d、马铃薯和蔗糖含量分别为200 g/L和20 g/L条件下，铜浸出率可达79.03%.

关键词: 铜尾矿, 黑曲霉, 生物浸出, 铜, 培养基

Abstract: The bioleaching of high alkaline copper ore tailings from Hunan Province with Aspergillus niger was carried out in shake flasks. The effects of leaching time, potato and sucrose contents on the leaching rate of copper were examined. The results showed that the leaching rate of copper reached the maximum value in the leaching time of 7 d, and then begun to decline markedly with further leaching. The contents of potato and sucrose in PSA medium had a significant impact on copper leaching. When the contents of potato and sucrose were 200 g/L and 20 g/L, respectively, the highest leaching rate of copper was obtained. At an inoculum amount of 0.02%(j), pulp density 50 g/L, 30℃ temperature and 200 r/min rotating speed, the leaching rate of copper reached 79.03% in 7 d with the contents of potato 200 g/L and sucrose 20 g/L.

Key words: copper ore tailings, Aspergillus niger, bioleaching, copper, culture

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