Review on Microbial Electrocatalysis Systems Coupled with MBR to Improve Wastewater Treatment
A Review on Microbial Electrocatalysis Systems Coupled with Membrane Bioreactor to Improve Wastewater Treatment
Authors : Jicun Wang, Shuai Zhao, Apurva Kakade, Saurabh Kulshreshtha, Pu Liu, Xiangkai Li
Microbial electrocatalysis is an electro reaction that uses microorganisms as a biocatalyst, mainly including microbial electrolytic cells (MEC) and microbial fuel cells (MFC), which has been used for wastewater treatment. However, the low processing efficiency is the main drawback for its practical application and the additional energy input of MEC system results in high costs. Recently, MFC/MEC coupled with other treatment processes, especially membrane bioreactors (MBR), has been used for high efficiency and low-cost wastewater treatment. In these systems, the wastewater treatment efficiency can be improved after two units are operated and the membrane fouling of MBR can also be alleviated by the electric energy that was generated in the MFC. In addition, the power output of MFC can also reduce the energy consumption of microbial electrocatalysis systems. This review summarizes the recent studies about microbial electrocatalysis systems coupled with MBR, describing the combination types and microorganism distribution, the advantages and limitations of the systems, and also addresses several suggestions for the future development and practical applications.
Keywords : microbial electrocatalysis system; membrane bioreactor; microbial electrolytic cell; microbial fuel cell; membrane fouling; wastewater treatment
Published in Microorganisms 2019, DOI: 10.3390/microorganisms7100372