电场作用对氧化亚铁硫杆菌培养的影响  

Effect of Electric Field on Culture of Acidithiobacillus Ferrooxidans

作　　者：刘泓伟 王学刚[1,2] 龙杰 高瑛瑛 万子聪 刘超 LIU Hong-wei;WANG Xue-gang;LONG Jie;GAO Ying-ying;WAN Zi-cong;LIU Chao(School of Water Resources and Environmental Engineering,East China University of Technology,Nanchang 330013,China;State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学水资源与环境工程学院,南昌330013 [2]东华理工大学核资源与环境国家重点实验室,南昌330013

出　　处：《有色金属（冶炼部分）》2022年第8期76-81,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(52064001);江西省自然科学基金资助项目(20202BABL203022)。

摘　　要：采用单室生物电反应器研究了直流电对氧化亚铁硫杆菌生长的影响。外加电流为10 mA条件下,氧化亚铁硫杆菌的亚铁氧化速率提高了33.15%。研究表明,适当的电流刺激可以使细菌细胞活性和生长速率更加稳定。电场作用下细菌细胞形态分析结果表明,适当的电流刺激能使细胞产生更高的跨膜电位,改变细胞膜的通透性,将更多的Fe^(2+)泵入内膜,促进氧化亚铁硫杆菌的生长和繁殖。The single-chamber bioelectric reactor was used to study effect of direct current on growth of Acidithiobacillus ferrooxidans(A.ferrooxidans).The experimental results show that when current intensity is 10 mA,the ferrous oxidation rate of A.ferrooxidans rises by 33.15%,and appropriate current stimulation can maintain the activity and growth rate of bacterial cells more stable.The results of morphological analysis of bacterial cells under the action of electric field shows that appropriate current stimulation can make cells generate higher transmembrane potential,change the permeability of cell membrane,pump more Fe^(2+)into the inner membrane,and promote A.ferrooxidans growth and reproduction.

关 键 词：电场 生物电反应器 氧化亚铁硫杆菌 

分 类 号：X703[环境科学与工程—环境工程]