您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Electron transfer capacity dependence of quinone-mediated Fe(III) reduction and current generation by Klebsiella pneumoniae L17

文献类型： 外文期刊

作者： Li, Xiaomin 1 ; Liu, Liang 1 ; Liu, Tongxu 1 ; Yuan, Tian 1 ; Zhang, Wei 1 ; Li, Fangbai 1 ; Zhou, Shungui 1 ; Li, Yongta 1 ;

作者机构： 1.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Guangdong, Peoples R China

2.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdon

关键词： Electron transfer capacity;Quinones;Electron shuttles;Iron oxide reduction;Current generation;Klebsiella pneumoniae L17

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

ISSN： 0045-6535

年卷期： 2013 年 92 卷 2 期

页码：

收录情况： SCI

摘要： Quinone groups in exogenous electron shuttles can accelerate extracellular electron transfer (EET) from bacteria to insoluble terminal electron acceptors, such as Fe(III) oxides and electrodes, which are important in biogeochemical redox processes and microbial electricity generation. However, the relationship between quinone-mediated EET performance and electron-shuttling properties of the quinones remains incompletely characterized. This study investigates the effects of a series of synthetic quinones (SQs) on goethite reduction and current generation by a fermenting bacterium Klebsiella pneumoniae L17. In addition, the voltammetric behavior and electron transfer capacities (ETCs) of SQ including electron accepting (EAC) and donating (EDC) capacities, is also examined using electrochemical methods. The results showed that SQ can significantly increase both the Fe(III) reduction rates and current outputs of L17. Each tested SQ reversibly accepted and donated electrons as indicated by the cyclic voltammograms. The EAC and EDC results showed that Carmine and Alizarin had low relative capacities of electron transfer, whereas 9,10-anthraquinone-2,6-disulfonic acid (AQDS), 2-hydroxy-1,4-naphthoquinone (2-HNQ), and 5-hydroxy-1,4-naphthoquinone (5-HNQ) showed stronger relative ETC, and 9,10-anthraquinone-2-carboxylic acid (AQC) and 9,10-anthraquinone-2-sulfonic acid (AQS) had high relative ETC. Enhancement of microbial goethite reduction kinetics and current outputs by SQ had a good linear relationship with their ETC, indicating that the effectiveness of quinone-mediated EET may be strongly dependent on the ETC of the quinones. Therefore, the presence of quinone compounds and fermenting microorganisms may increase the diversity of microbial populations that contribute to element transformation in natural environments. Moreover, ETC determination of different SQ would help to evaluate their performance for microbial EET under anoxic conditions. (C) 2013 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Reduction of iron oxides by Klebsiella pneumoniae L17: Kinetics and surface properties. Liu, Tong-xu,Li, Xiao-min,Li, Fang-bai,Zhang, Wei,Chen, Man-jia,Zhou, Shun-gui.

[2]Electrochemical Characterization of Tea-derived Dissolved Organic Matter: Implications for Electron Shuttling. Yuan, Yong,Tao, Ya,Zhou, Shungui,Lu, Qin,Tao, Ya,Tang, Hao. 2013

[3]Mechanisms and Applications of Electron Shuttle-Mediated Extracellular Electron Transfer. Ma Jinlian,Ma Jinlian,Tang Jia,Zhou Shungui,Zhuang Li,Ma Chen. 2015

[4]Enhanced nitrate reduction and current generation by Bacillus sp in the presence of iron oxides. Liu, Tongxu,Li, Fangbai,Zhang, Wei,Li, Xiaomin,Zhang, Wei. 2012

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台