| 嗜酸氧化亚铁硫杆菌在黄铜矿表面的短期吸附实验研究(英文) |
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| 引用本文： | 王兆慧,谢学辉,柳建设.嗜酸氧化亚铁硫杆菌在黄铜矿表面的短期吸附实验研究(英文)[J].中国有色金属学会会刊,2012,22(2):442-446. |
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| 作者姓名： | 王兆慧 谢学辉 柳建设 |
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| 作者单位： | 东华大学环境科学与工程学院;中南大学资源加工与生物工程学院 |
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| 基金项目： | Projects (41073060,21007009,50874032) supported by the National Natural Science Foundation of China;Project (B604) supported by Shanghai Leading Academic Discipline Project,China;Project (10CG34) supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation,China |
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| 摘 要： | 为了探明细菌在黄铜矿表面的吸附机制,采取短期吸附的实验方法,研究吸附时间、矿浆浓度、细菌浓度、pH值和离子强度等因素对吸附行为的影响。结果表明,细菌吸附量随初始细菌浓度和矿浆浓度的增加而增大。Acidithiobacillus ferrooxidans在黄铜矿表面的最佳吸附pH范围为1-3。离子强度的增大会抑制细菌吸附,这一现象可以通过双电层理论得到很好的解释。细菌与黄铜矿的吸附行为受疏水性和静电作用力共同影响。
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| 关 键 词： | 细菌吸附 黄铜矿 离子强度 疏水性 Acidithiobacillus ferrooxidans |
| 收稿时间： | 16 March 2011 |
Experimental measurements of short-term adsorption of Acidithiobacillus ferrooxidans onto chalcopyrite |
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| WANG Zhao-hui,XIE Xue-hui,LIU Jian-she.Experimental measurements of short-term adsorption of Acidithiobacillus ferrooxidans onto chalcopyrite[J].Transactions of Nonferrous Metals Society of China,2012,22(2):442-446. |
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| Authors: | WANG Zhao-hui XIE Xue-hui LIU Jian-she |
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| Affiliation: | 1,2 1.College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;2.School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China |
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| Abstract: | The influencing factors in adsorption such as adsorption time,pulp concentration,bacterial concentration,pH as well as ionic strength were investigated to explore the relationship among them and bacterial adsorption.The adsorption was a rapid process for bacterial adhesion to chalcopyrite.The extent of adsorption increased with increasing initial bacterial concentration and pulp concentration.The optimal pH for Acidithiobacillus ferrooxidans adsorption onto chalcopyrite surfaces was in the range of pH 1-3.The increase of ionic strength led to decrease in bacterial adsorption,which can be well explained by electric double layer theory.The adsorption behavior appeared to be controlled by both hydrophobic and electrostatic interactions at the interface of bacteria and mineral. |
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| Keywords: | bacterial adsorption chalcopyrite ionic strength hydrophobicity Acidithiobacillus ferrooxidans |
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