异养细菌对含钒石煤微生物浸出效果的研究  

Bioleaching of Vanadium-Bearing Stone Coal by Heterotrophic Bacteria

作　　者：林海 王鑫 董颖博 许晓芳 张悦 

机构地区：[1]北京科技大学能源与环境工程学院工业典型污染物资源化处理北京市重点实验室,北京100083

出　　处：《稀有金属》2017年第9期1050-1055,共6页Chinese Journal of Rare Metals

基　　金：国家水体污染控制与治理科技重大专项项目(2015ZX07205003)资助

摘　　要：研究了混合异养细菌对含钒石煤的微生物浸出效果,并采用X荧光半定量(XRF)、X射线衍射(XRD)和傅里叶红外光谱分析(FTIR)等检测手段对石煤原矿、细菌浸出后残渣进行了矿物结构的表征。研究结果表明,混合异养细菌可以浸出含钒石煤,浸出29 d后,上清液中Al,Si和V的最高质量浓度分别达到14.63,55.14和26.95 mg·L^(-1);浸出结束后,V的浸出率达26.87%,且通过添加新鲜培养液,钒的浸出率可提高至37.97%;经混合异养细菌作用后,石煤中云母结构中层间水的氢键发生了变化,即其结构中阳离子发生变化,且590 cm^(-1)处的Si-O-M弯曲振动峰消失。The bioleaching of vanadium-bearing stone coal by mixed heterotrophic bacteria was studied. And the detection methods of X-ray fluorescence（ XRF）,X-ray diffraction（ XRD） and Fourier transform infrared spectroscopy（ FTIR） were used to analyze the mineral structure of ore stone coal and the residue. The results showed that the ions of vanadium-bearing stone coal could be leached out by mixed heterotrophic bacteria. The highest concentration of Al,Si and V were 14. 63,55. 14,and 26. 95 mg·L-1 after 29 d,respectively,and the leaching rate of V was 26. 87%. The leaching rate of V could be increased to 37. 97% by adding fresh medium.The bioleaching activity caused the changes of hydrogen bonding of interlayer water in muscovite（ the changes of interlayer cation） and the disappearance of Si-O-M bending vibration bands in 590 cm-1.

关 键 词：混合异养细菌 胶质芽孢杆菌 含钒石煤 微生物浸出 

分 类 号：TD925[矿业工程—选矿]