期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 44, 期 11, 页码 5481-5487出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.09.092
关键词
Microbial fuel cell (MFC); Membrane-less SCMFC; Distillery wastewater; Electricity generation
资金
- King Mongkut's University of Technology North Bangkok [KMUTNB-61-GOV-F77]
- Thailand Research Fund [PHD/0322/2552]
- Royal Society
- Thailand Research Fund through the Royal Golden Jubilee Ph.D. Program [PHD/0322/2552]
- Joint Graduate School of Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi [JGSEE/THESIS/226]
Generation of electricity and treatment of the distillery wastewater (DW) were achieved in air-cathode single-chamber MFCs (SCMFCs). The maximum current density of 2.36 mA.m(-2) and power density of 39.21 mW.m(-3) were obtained at DW concentration of 2000 mg COD.L-1. The trends of current and power density were decreased with increasing concentration from 2000 to 4000 mg COD.L-1. The maximum soluble COD removal was 62.2% (CE = 8.77%, 1500 mg COD.L-1). The electrochemical activity of the microbes in the SCMFCs showed significantly high oxidized substrate in the semi-batch distillery wastewater operation. The microbial communities on the anode biofilms fed with a high concentration of distillery wastewater (4000 mg COD.L-1) operation were analyzed based on 454 pyrosequencing of the 16S rRNA gene revealed different microbial communities. The dominant phylum were Proteobacteria (28.5%), Bacteroidetes (23.4%) and Chlorobi (22.8%), while Firmicutes (9.3%) were detected as a lesser proportion of the total community. The microbial community structures suggested that Proteobacteria might be important for the production of power density in distillery wastewater fed air-cathode SCMFC. These results demonstrate that the SCMFCs can simultaneously generate electricity and achieve wastewater treatment from a renewable source. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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