Journal
BIORESOURCE TECHNOLOGY
Volume 198, Issue -, Pages 87-93Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.08.149
Keywords
Malic acid production; Microbial electrolysis desalination cell; Energy consumption; Bacteria community
Funding
- National Natural Science Foundation of China [51278500, 41471181, 51308557]
- National Key Scientific Instrument and Equipment Development project [2012YQ0301110803]
- Fundamental Research Funds for the Central Universities [13lgpy55, 14lgpy16]
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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/L h) and the lowest energy consumption (0.35 +/- 0.14 kW h/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. (C) 2015 Elsevier Ltd. All rights reserved.
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