Current advances of VOCs degradation by bioelectrochemical systems: A review

Shihan Zhang, Juping You, Christian Kennes, Zhuowei Cheng, Jiexu Ye, Dongzhi Chen, Jianmeng Chen, Lidong Wang

Research output: Contribution to journalReview article

Abstract

The volatile organic compounds (VOCs) impose severe environmental issues such as haze, photochemical smog, ozone depletion, and global warming. The degradation of VOCs in the gas phase is determined by the gas-liquid mass transfer and/or the microbial activity depending on the properties of the VOCs such as solubility, bioavailability, and toxicity. Bioelectrochemical systems (BESs), integrating microbial–electro-chemical removal mechanisms, have been intensively investigated for the organic compound removal in wastewater. In BESs, the interaction between the microbes and electrodes facilitates the electron transfer rate during the organic compound degradation and hence have a great potential to enhance the microbial activity. Currently, BESs are also under development for the refractory VOCs removal both in the liquid phase and gas phase. This review summarizes the current advances of the VOCs removal by BESs in terms of the mechanisms, pathway, removal efficiency, and coulombic efficiency. Furthermore, the challenges and future perspectives on the development of the efficient BESs for VOCs removal with a high coulombic efficiency are briefly discussed. It is believed that this review provides a new insight into the biological removal of VOCs.

Original languageEnglish (US)
Pages (from-to)2625-2637
Number of pages13
JournalChemical Engineering Journal
Volume334
DOIs
StatePublished - Feb 15 2018
Externally publishedYes

Keywords

  • Bioelectrochemical system
  • Electron transfer
  • MEC
  • MFC
  • Microbial degradation
  • VOCs degradation

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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  • Cite this

    Zhang, S., You, J., Kennes, C., Cheng, Z., Ye, J., Chen, D., Chen, J., & Wang, L. (2018). Current advances of VOCs degradation by bioelectrochemical systems: A review. Chemical Engineering Journal, 334, 2625-2637. https://doi.org/10.1016/j.cej.2017.11.014