Journal
BIORESOURCE TECHNOLOGY
Volume 150, Issue -, Pages 271-277Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.09.107
Keywords
Electrosorption; Microbial fuel cell; Phenol; Adsorption isotherms; Adsorption kinetics
Funding
- Natural Science Foundation of China [51178225, 21328602, 21273120]
- Key Laboratory of Original Agro-environment Quality of Ministry of Agriculture
- Tianjin Key Laboratory of Agro-environment and Agro-product Safety [2012-SZJJ-CYM]
- [GEFC09-12]
- [NCET-08-0296]
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This work studied the operating parameters (pH, electrolyte concentration, initial phenol concentration, MFCs connection numbers and mode), adsorption isotherms and kinetics of a novel electrosorption driven by microbial fuel cells (MFC-Sorption) to remove phenol without external electric grid energy supply. It proved that high electrolyte concentration and low solution pH promoted the performance of phenol removal. 3 MFCs connections in series achieved a adsorption capacity of 1.76 mmol/g, which was much higher than that in parallel connection (1.46 mmol/g). Well fitted with Langmuir isotherm, the maximum adsorption capacity by MFC-Sorption and electrosorption was observed 48% and 65% higher than that by conventional adsorption. The phenol removal by MFC-Sorption was supposed to be more suitable for a pseudo-second-order kinetics, and with the increase of initial phenol concentration from 20 mg/L to 300 mg/L, the initial adsorption rate increased 26.99-fold. It concluded that the MFC-Sorption system could cost-effectively remove pollutant of phenol. (C) 2013 Elsevier Ltd. All rights reserved.
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