Klasson K Thomas, Borole Abhijeet P, McKeown Catherine K, Hamilton Choo Y
Oak Ridge National Laboratory, Oak Ridge, TN 37831-6226, USA.
Appl Biochem Biotechnol. 2006 Spring;129-132:897-908.
A biological process for removal of mercury from coal is under investigation. Iron and sulfur oxidizing bacteria have previously been used for desulfurization of coal and for mineral mining. We have shown that removal of mercury from coal is also possible via the same principles. Two pure cultures, Leptospirillum ferrooxidans and Acidithiobacillus ferrooxidans and four environmental consortium samples obtained from an acid mine drainage site were studied for mercury removal from coal. Four different coal samples were included in the study and the preliminary results have shown that up to 20% of the mercury can be removed in batch cultures compared to control. Additional parameters such as media composition and inoculum size were also studied. This is the first report demonstrating successful leaching of mercury from coal using biological treatment.
一种从煤中去除汞的生物工艺正在研究中。铁和硫氧化细菌此前已用于煤的脱硫和矿物开采。我们已经表明，通过相同的原理从煤中去除汞也是可能的。研究了两种纯培养物，即氧化亚铁钩端螺旋菌和氧化亚铁硫杆菌，以及从酸性矿山排水 site 获得的四个环境群落样本从煤中去除汞的情况。该研究包括四个不同的煤样，初步结果表明，与对照相比，分批培养中高达 20% 的汞可以被去除。还研究了其他参数，如培养基组成和接种量。这是第一份证明使用生物处理成功从煤中浸出汞的报告。
