文献类型：期刊文献

中文题名：外加电场强化Acidithiobacillus ferrooxidans生物氧化黄铁矿过程研究

英文题名：Study on enhancement of Acidithiobacillus ferrooxidans biological oxidation process of pyrite by applied electric field

作者：谭宁杰[1];祁林峰[1];汪汉正[1];余靖浩[1];朱明龙[1];谭文松[1];张旭[1]

机构：[1]华东理工大学生物工程学院动物细胞室,上海200237

年份：2025

卷号：39

期号：3

起止页码：432

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：;EI(收录号：20252918803141);北大核心:【北大核心2023】；

基金：国家自然科学基金(21878083)。

语种：中文

中文关键词：生物氧化;Acidithiobacillus ferrooxidans;黄铁矿;微生物电化学反应器;电化学

外文关键词：biological oxidation;Acidithiobacillus ferrooxidans;pyrite;microbial electroreactor;electro?chemistry

摘要：为了强化冶金微生物氧化黄铁矿的过程效率,本实验设计并构建了一个微生物电化学反应器系统,研究了在外加电场条件下,嗜酸氧化亚铁硫杆菌(Acidithiobacillus ferrooxidans)生物氧化黄铁矿过程特征,主要包括铁氧化效率、微生物被膜的结构与生物量、胞外聚合物的分泌量及组分,以及相关过程的电化学特性。结果表明,在适宜外加电场作用下,菌体的铁氧化能力略有增强,黄铁矿氧化量上升21.3%;黄铁矿表面的生物被膜结构更加致密,生物量显著增加,总菌体量相比对照组上升0.9倍。在生物氧化过程中,黄铁矿生物氧化系统的电流逐渐上升,过程电阻逐渐下降。研究结果提出了增加冶金微生物生物量的有效手段,可为生物浸出产业化技术的开发提供一定支持。
In order to enhance the process efficiency of metallurgical microbial oxidation of pyrite,this experiment designed and constructed an external electric field microbial electroreactor system,and studied the process charac?teristics of pyrite biooxidation by Acidithiobacillus ferrooxidans under external electric field conditions.It mainly in?cludes iron oxidation efficiency,structure and biomass of microbial biofilm,secretion and composition of extracellu?lar polymers,and related electrochemical properties.The results show that under the action of a suitable external e?lectric field,the iron oxidation ability of the bacteria is slightly enhanced,and the pyrite oxidation amount increases by 213%;the biofilm structure on the surface of pyrite is more compact,the biomass increases significantly,and the total bacterial volume increases by 09 times compared with the control group.During the biooxidation process,the current of the pyrite biooxidation system gradually increases,and the process resistance gradually decreases.The research results propose an effective means to increase the biomass of metallurgical microorganisms,which will provide certain support for the development of industrialized bioleaching technology.