文献类型：会议论文

中文题名：Effects of Dissolved Oxygen and Agitation Intensity on Efficiency of Biooxidation and Microbial Community Structure

作者：Xu Zhang[1];HuanHuan PENG[1];Minglong Zhu[1];Hong Wang[1];Jiangman Zhao[1];Wensong Tan[1];Jie Liu[1];Weiye Wu[1];Zhaoyin Wang[1];

机构：[1]The State Key Laboratory of Bioreactor Engineering,East China University of Science & Technology,Shanghai,China;

会议论文集：The 17th International Conference on Heavy Metals in the Environment (ICHMET2014)(第十七届国际环境重金属会议)论文集

会议日期：20140922

会议地点：贵阳

主办单位：中国科学院地球化学研究所

语种：英文

中文关键词：Biological;oxidation;bioleaching;STR;reactor;microbial;community;structure;dissolved;oxygen;levels;agitation;intensity

摘要：In order to systematically investigated the effect of operating parameters of the stirred tank reactor(STR),the impacts of the dissolved oxygen(DO)levels and the agitation intensity(AI)on the efficiency of the biological oxidation process and the microbial community structures were studied by a laboratory bioleaching STR.The results demonstrated that higher DO level would be conducive to improve the efficiency of the biological oxidation.Increasing AI within a certain range would be enhanced the bio-oxidation process efficiency.However,too high DO levels and AI would have a negative effect.T-RFLP analysis results indicated that the diversity and the abundance of the microorganism were different greatly at various DO and AI.However,both Acidospaera rubrifaciens str and Sulfobacillus thermosulfidooxidans were the dominate species for all the experimental conditions.Results of this study could provide important technical support for the optimization and scale-up process of the bioleaching STR.