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Bioengineering of Bacterial Extracellular Electron Transfer Towards Sustainable Wastewater Treatment

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Bioelectrochemistry Stimulated Environmental Remediation

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Abstract

Extracellular electron transfer (EET) referring to electron exchange between cells and solid matters is a unique electron transport process in bacteria that enables cells with very special character of electrode respiration. Based on bacterial electrode respiration, various bioelectrochemical systems (BES) for efficient wastewater treatment have been developed during the past decades. Besides augmentation of wastewater treatment, the BES are capable of harvesting the energy and recovery of resources from wastewater and can also produce value-added products by upgrading CO2 that was emitted during wastewater treatment. Therefore, BES hold a great promise to develop an energy-saving, emission-reducing, and economic feasible wastewater treatment approach for sustainable development, while EET efficiency engineering became the key step for the performance optimization of BES. In this chapter, typical EET pathways in several model exoelectrogens were introduced, and the potential of EET engineering for performance improvement of BES was highlighted. Moreover, future research directions for EET and BES engineering were also discussed.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (NSFC 51578266, 51708254, 21706105), Natural Science Foundation of Jiangsu Province (BK20160015, BK20170545), Fok Ying-Tong Education Foundation (grant no., 161074), National Postdoctoral Program for Innovative Talents (BX20180131), and a project funded by the Priority Program Development of Jiangsu Higher Education Institutions.

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  1. Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, China

    Zhen Fang, Jamile Mohammadi Moradian, Yan-Zhai Wang, Yang-Yang Yu, Xiang Liu & Yang-Chun Yong

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  1. Zhen Fang
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  2. Jamile Mohammadi Moradian
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  3. Yan-Zhai Wang
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Correspondence to Yang-Chun Yong .

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  1. Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, China

    Ai-Jie Wang

  2. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China

    Bin Liang

  3. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, China

    Zhi-Ling Li

  4. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China

    Hao-Yi Cheng

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Fang, Z., Moradian, J.M., Wang, YZ., Yu, YY., Liu, X., Yong, YC. (2019). Bioengineering of Bacterial Extracellular Electron Transfer Towards Sustainable Wastewater Treatment. In: Wang, AJ., Liang, B., Li, ZL., Cheng, HY. (eds) Bioelectrochemistry Stimulated Environmental Remediation. Springer, Singapore. https://doi.org/10.1007/978-981-10-8542-0_1

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