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KMID : 1094720120170030654
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Biotechnology and Bioprocess Engineering
2012 Volume.17 No. 3 p.654 ~ p.660
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Coal tar wastewater treatment and electricity production using a membrane-less tubular microbial fuel cell
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Park Ho-Il
Wu Chenjie
Lin Lian-Shin
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Abstract
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We report on treatment of wastewater from a coal tar refinery and electricity production using a mediator-less, membrane-less microbial fuel cell (MFC). pH in the MFC decreased from 7.8 to 7.0 during a 24-day period, whereas 88% of chemical oxygen demand, 57% of sulfate, and 41% of sulfur were removed. The concentration of chemical elements such as aluminum, silver, barium, copper, iron, molybdenum, sulfur, and strontium also decreased. Removal of phenol and 2-methyl phenol exceeded 90%. Benzonitrile and naphthalene were not detected after the MFC treatment. Maximum voltage output and power density of the MFC were 543 mV and 4.5 mW/m2, respectively.
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KEYWORD
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biological treatment, coal tar wastewater, electricity production, microbial fuel cell (MFC), sulfate reduction
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