期刊
JOURNAL OF POWER SOURCES
卷 254, 期 -, 页码 316-322出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.12.114
关键词
Hydrogen peroxide; Three-dimensional electrode; Microbial fuel cell; COD removal
资金
- National Natural Science Foundation of China [51208352]
- Tianjin Research Program of Application Foundation and Advanced Technology [13JCQNJC09100]
- Independent Innovation Research Fund of Tianjin University [2013XQ-0042]
A three-dimensional electrode bioelectrochemical system for the cathodic production of hydrogen peroxide and the simultaneous treatment of wastewater is investigated. Three types of threedimensional electrodes activated carbon particle electrodes (ACPE), carbon black particle electrodes (CBPE) and graphite particle electrodes (GPE) are made of activated carbon (AC), carbon black (CB) and graphite powders respectively with polytetrafluoroethene (PTFE) as the binder. The MFC using the GPE is shown to perform best for catalyzing H2O2 production, while the MFCs equipped with the CBPE and the ACPE achieve a 17-18% higher power output but a 2.5-4.4% lower H202 yield, due to the further cathodic reduction of H2O2. Furthermore, a relatively high current in the system is demonstrated to have a positive impact on both cathodic H2O2 generation and anodic organic degradation for each MFC. At an external resistance of 20 0, the MFC using the GPE achieves the H2O2 generation of 196.50 mg L-1 and 84% COD removal in 24 h, with Coulombic efficiency, Faradic efficiency and COD conversion efficiency of 29%, 70%, and 20%, respectively. This study shows that MFC with carbon three-dimensional electrode is a costeffective energy-saving bioelectrochemical system for the simultaneous production of hydrogen peroxide and removal of COD. (c) 2014 Elsevier B.V. All rights reserved.
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