Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 450, Issue -, Pages 242-248Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2013.09.013
Keywords
Microbial fuel cells; Anaerobic membrane bioreactor; Wastewater treatment; Bio-electricity; Membrane fouling
Categories
Funding
- Major Science and Technology Program for Water Pollution Control and Management [2013 ZX07201007]
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [2011DX01]
- Specialized Research Fund for the Doctoral Program of Higher Education [20112302110060]
- Funds for Creative Research Groups of China [51121062]
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Microbial fuel cells (MFCs) have a great potential for cost-effective wastewater treatment; however, the effluent quality from MFC is not always satisfied. In this study, an anaerobic membrane bioelectrochemical reactor (AnMBER) with an anaerobic membrane bioreactor (AnMBR) equipped with hollow-fiber microfiltration (MF) membranes directly serving as the cathodic chamber of a dual-chamber MFC was developed. Over an operational period of more than 600 h, the AnMBER system (with 100 Omega resistor) was able to generate continuous bio-electricity (0.132 V), with a maximum power density of 116 W m(-3) net cathodic chamber (NCC), and achieved high removal efficiencies of chemical oxygen demand (COD) (91.6%) and nitrate (94.8%). Furthermore, compared with a control AnMBR (with open circuit), membrane fouling was mitigated significantly in the AnMBER system, which was mainly attributed the lower particle zeta potential and lower amount of soluble microbial products (SMP) in the cathodic mixed liquor. These results demonstrate that integrating the anaerobic MF filtration sequentially to MFCs is a feasible approach to accomplish simultaneous efficient wastewater treatment and energy recovery and also raises the possibility of using MFCs as a means to minimize fouling in combined systems by improving the mixed liquor properties. (C) 2013 Elsevier B.V. All rights reserved.
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