| Adsorption characteristics of thiobacillus ferrooxidans on surface of sulfide minerals |
| |
| 引用本文： | 柳建设,谢学辉,李邦梅,董青海. Adsorption characteristics of thiobacillus ferrooxidans on surface of sulfide minerals[J]. 中南工业大学学报(英文版), 2005, 12(6): 671-676 |
| |
| 作者姓名： | 柳建设 谢学辉 李邦梅 董青海 |
| |
| 作者单位： | School of Resources Processing and Bioengineering Central South University Changsha 410083 China，School of Resources Processing and Bioengineering Central South University Changsha 410083 China，School of Resources Processing and Bioengineering Central South University Changsha 410083 China，General Research Institute for Nonferrous Metals Beijing 100088 China |
| |
| 基金项目： | Project（50321402） supported by the National Natural Science Foundation of China; project （2004CB619204） supported by the National Key Fundamental Research and Development Program of China |
| |
| 摘 要： | 1INTRODUCTION Thefeatureofmineralsurfaceismodifiedlike thecellsurfacebyfixingbacteriaonitssurface whilethefeatureofcellsurfaceisdeterminedbyits livingcondition[1].Thecomponentofbacterial surfaceplaysanimportantroleinthebacterialat tachmentonminerals[2,3].Itisprovedthatcell wallandoutermembraneareinvolvedintheadhe sionbetweenmineralsandmicrobes,whilethein nermembraneandotherorganelleshardlyhaveany influenceonthisprocess.Thesephysiological structuresofbacteria,especiallytheoutermem brane,af…
|
| 关 键 词： | 生物冶金 吸附 过滤 硫杆菌 硫化矿 |
| 文章编号： | 1005-9784（2005）06-0671-06 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-05-12 |
Adsorption characteristics of thiobacillus ferrooxidans on surface of sulfide minerals |
| |
| LIU Jian-she,XIE Xue-hui,LI Bang-mei,DONG Qing-hai. Adsorption characteristics of thiobacillus ferrooxidans on surface of sulfide minerals[J]. Journal of Central South University of Technology, 2005, 12(6): 671-676 |
| |
| Authors: | LIU Jian-she XIE Xue-hui LI Bang-mei DONG Qing-hai |
| |
| Abstract: | By using thiobacillus ferrooxidans (T.f) from Qixiashan, Hubei Province, China, the adsorption characteristics of T.f on surface of sulfide mineral were studied. The influences of adsorption time, pH value, temperature, initial inoculated concentration of bacteria, concentration of sulfide mineral powder, and variety of minerals on the adsorption characteristics were firstly investigated by using the ninhydrin colorimetric method, and the changes of contact angles and Zeta potentials of mineral surface during the bacterial adsorption were then determined. The results show that when the leaching experiments are performed for a long time from several days to a month, the maximal quantity of adsorption of T.f on the surface of pyrite is obtained under the following conditions: leaching for 20 d, pH value in range of 1-2 and temperature at 30 ℃, respectively; when the bio-leaching experiments are performed for a shorter leaching time, the maximal quantity of adsorption is obtained under the conditions: bio-leaching for 2 h, at 2.4×10 7 cell/mL of initial inoculated bacteria concentration, and at 10% of mineral powder concentration; and the adsorption quantities are different form one sulfide mineral to another, and the adsorption of T.f on the surface of sulfide minerals includes three phases: increasing phase, stationary phase and decreasing phase. |
| |
| Keywords: | thiobacillus ferrooxidans sulphide mineral adsorption bio-leaching |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
