title: A comparative evaluation of different types of microbial electrolysis desalination cells for malic acid production.
abstract: The aim of this study was to investigate different microbial electrolysis desalination cells for malic acid production. The systems included microbial electrolysis desalination and chemical-production cell (MEDCC), microbial electrolysis desalination cell (MEDC) with bipolar membrane and anion exchange membrane (BP-A MEDC), MEDC with bipolar membrane and cation exchange membrane (BP-C MEDC), and modified microbial desalination cell (M-MDC). The microbial electrolysis desalination cells performed differently in terms of malic acid production and energy consumption. The MEDCC performed best with the highest malic acid production rate (18.4 ± 0.6 mmol/Lh) and the lowest energy consumption (0.35 ± 0.14 kWh/kg). The best performance of MEDCC was attributable to the neutral pH condition in the anode chamber, the lowest internal resistance, and the highest Geobacter percentage of the anode biofilm population among all the reactors.
authors.affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Guangli
authors.initials: G
authors.lastname: Liu
authors.affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. Electronic address: luohp5@mail.sysu.edu.cn.
authors.forename: Haiping
authors.initials: H
authors.lastname: Luo
authors.affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Cheng
authors.affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Renduo
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Wenkai
authors.initials: W
authors.lastname: Teng
mesh_terms: D001419:Bacteria / Q000378:metabolism; D001674:Bioelectric Energy Sources; D018441:Biofilms; D004566:Electrodes; D004572:Electrolysis; D006863:Hydrogen-Ion Concentration; D008293:Malates / Q000737:chemistry*; D054712:Salinity; D018508:Water Purification
chemical_list: D008293:Malates; C030298:malic acid
keywords: Bacteria community; Energy consumption; Malic acid production; Microbial electrolysis desalination cell