东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (1): 89-93.DOI: 10.12068/j.issn.1005-3026.2016.01.019

• 资源与土木工程 • 上一篇    下一篇

一株嗜酸氧化亚铁硫杆菌的鉴定及浸矿性能

卢涛1, 魏德洲1, 张瑞洋1, 卓建英2   

  1. (1. 东北大学 资源与土木工程学院, 辽宁 沈阳110819; 2. 辽宁省冶金地质勘查局四〇三队, 辽宁 鞍山114018)
  • 收稿日期:2014-11-10 修回日期:2014-11-10 出版日期:2016-01-15 发布日期:2016-01-08
  • 通讯作者: 卢涛
  • 作者简介:卢涛(1986-),男,山东淄博人,东北大学博士研究生; 魏德洲(1956-),男,河南南阳人,东北大学教授,博士生导师.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N120601005); “十二五”国家科技支撑计划项目(2012BAB01B03).

Identification and Bioleaching Capacity of an Acidithiobacillus Ferrooxidan

LU Tao1, WEI De-zhou1, ZHANG Rui-yang1, ZHUO Jian-ying2   

  1. 1.School of Resources & Civil Engineering, Northeastern University, Shenyang 110819,China; 2. Team 403 in Liaoning Provincial Bureau of Metallurgical & Geological Prospecting, Anshan 114018, China.
  • Received:2014-11-10 Revised:2014-11-10 Online:2016-01-15 Published:2016-01-08
  • Contact: LU Tao
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摘要: 从西藏甲玛某多金属矿的酸性矿坑水中分离获得一株浸矿细菌(命名为XZ).该菌为革兰氏阴性菌,短杆状,菌体长约1~1.5μm,直径约0.5μm,两端钝圆,能够氧化Fe2+和单质硫,最适生长pH为2.0,最适生长温度为30℃,经过对其生长特性进行研究及16S rRNA基因测序鉴定其为一株嗜酸氧化亚铁硫杆菌.利用XZ菌对西藏某低品位铜矿角岩矿进行了摇瓶浸出试验研究,结果表明,在接种量体积分数为10%,矿浆质量分数为10%,矿石粒度为-45μm占100%,培养温度30℃,振荡强度160r/min的浸出条件下,经过15d,Cu2+的浸出率达72.15%.

关键词: 嗜酸氧化亚铁硫杆菌, 菌种鉴定, 16S rRNA, 生物浸出, 低品位铜矿

Abstract: A bioleaching bacterium was isolated from an acidic mine drainage of Jiama polymetallic mine in Tibet and was named as XZ. The strain XZ, with round ends, is gram-negative and short-rod shaped in 1~1.5μm×0.5μm. Ferrous iron and elemental sulfur could be oxidized by strain XZ. The optimum growth pH is 2.0 and the optimum growth temperature is 30℃. It was identified as Acidithiobacillus ferrooxidans by means of growth characteristic research and 16S rRNA sequencing. The strain XZ was used to leach a poor copper hornstone ore took from Tibet.Shaking flask leaching tests were carried out with inoculation size of 10%(volume fraction), pulp mass fraction of 10% ,ore particle size of -45μm accounting for 100%, leaching temperature of 30℃ and shaking intensity of 160r/min. The results show that leaching rate of copper can reach 72.15% after 15 days.

Key words: Acidithiobacillus ferrooxidans, strain identification, 16S rRNA, bioleaching, poor copper ore

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