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金属矿山 ›› 2008, Vol. 38 ›› Issue (06): 52-55.

• 矿物工程 • 上一篇    下一篇

菌种活化条件对含砷金矿石生物预氧化的影响

闫颖,刘文斌,王铧泰,王秀美,夏乐先,柳建设   

  1. 中南大学
  • 收稿日期:2008-04-02 出版日期:2008-06-15 发布日期:2011-07-18
  • 基金资助:

    国家自然科学基金创新群体基金项目(编号:50321402),国家重点基础研究发展规划项目(973项目)(编号:2004CB619204)。

Effect on Bacterial Activation Conditions on Biological Pre-oxidation of Arsenic-Containing Gold Ore

Yan Ying,Liu Wenbin,Wang Huatai,Wang Xiumei,Xia Lexian,Liu Jianshe   

  1. Central South University
  • Received:2008-04-02 Online:2008-06-15 Published:2011-07-18

摘要: 为提高含砷金矿生物预氧化所用细菌的活性,采用经含砷金矿长期驯化的嗜中温混合菌群进行了活化试验,并用活化菌种对山东某含砷金矿石进行了生物预氧化试验。结果表明:以10 g/L的FeSO4·7H2O和质量分数为5%的金矿作为混合能源对菌种进行1次活化后,金矿石生物预氧化的脱砷率可达到75.0%;以质量分数为5%的金矿为能源对1次活化菌种进行2次活化后,金矿石生物预氧化的脱砷率可进一步提高到89.0%。

关键词: 生物预氧化, 含砷金矿, 嗜中温菌, 脱砷率, 活化

Abstract: To improve the activity of bacteria used for the pre-oxidation of arsenic-containing gold ore, study was made on the activation of the moderate thermophiles long domesticated by arsenic-containing gold ore and the activated bacteria was used in the biological pre-oxidation test. The result indicates that when 10 g/L FeSO4·7H2O and 5% gold were combined and used as energy for the bacterial activation, the arsenic removal rate of the biological pre-oxidation of gold ore can reach 75.0%, when 5% gold ore was used for the second bacterial activation, the arsenic removal rate can be further increased to 89.0%.

Key words: Biological pre-oxidation, Arsenic-containing gold ore, Moderate thermophiles, Arsenic removal rate, Activation