Mechanism of extracellular electron transport and reactive oxygen mediated Sb(III) oxidation by Klebsiella aerogenes HC10
作者：
Qun Rong;Chaolan Zhang*;Caiyuan Ling;Dingtian Lu;Linjiang Jiang
通讯作者：
Chaolan Zhang
作者机构：
College of Resources, Environment and Materials Guangxi University, Nanning 530004, China
School of Environment and Life Science, Nanning Normal University, Nanning 530001, China
通讯机构：
College of Resources, Environment and Materials Guangxi University, Nanning 530004, China
语种：
英文
关键词：
Antimonite oxidation,Active oxygen,Free radical,Electron transfer,AQDS
期刊：
环境科学学报(英文版)
ISSN：
1001-0742
年：
2025
卷：
147
页码：
11-21
摘要：
Microbial oxidation and the mechanism of Sb(III) are key governing elements in biogeochemical cycling. A novel Sb oxidizing bacterium, K. aerogenes HC10, was attracted early and revealed that extracellular metabolites were the main fractions driving Sb oxidation. However, linkages between the extracellular metabolite driven Sb oxidation process and mechanism remain elusive. Here, model phenolic and quinone compounds, i.e., anthraquinone-2,6-disulfonate (AQDS) and hydroquinone (HYD), representing extracellular oxidants secreted by K. aerogenes HC10, were chosen to further study the Sb(III) oxidation mechanism. N2 purging and free radical quenching showed that oxygen-induce...
