期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 1, 页码 411-415出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.05.059
关键词
Microbial fuel cell; Biodiesel production waste; Electricity generation; Carbon brush
资金
- National Science Foundation of China [50638020]
- State Key Laboratory of Urban Water Resource Environment [2008DX02]
- National Creative Research Groups of China [50821002]
Biodiesel production through transesterification of lipids generates large quantity of biodiesel waste (BW) containing mainly glycerin. BW can be treated in various ways including distillation to produce glycerin, use as substrate for fermentative propanediol production and discharge as wastes. This study examined microbial fuel cells (MFCs) to treat BW with simultaneous electricity generation. The maximum power density using BW was 487 +/- 28 mW/m(2) cathode (1.5 A/m(2) cathode) with 50 mM phosphate buffer solution (PBS) as the electrolyte, which was comparable with 533 +/- 14 mW/m(2) cathode obtained from MFCs fed with glycerin medium (COD 1400 mg/L). The power density increased from 778 +/- 67 mW/m(2) cathode using carbon cloth to 1310 +/- 15 mW/m(2) cathode using carbon brush as anode in 200 mM PBS electrolyte. The power density was further increased to 2110 +/- 68 mW/m(2) cathode using the heat-treated carbon brush anode. Coulombic efficiencies (CEs) increased from 8.8 +/- 0.6% with carbon cloth anode to 10.4 +/- 0.9% and 18.7 +/- 0.9% with carbon brush anode and heat-treated carbon brush anode, respectively. (C) 2010 Elsevier Ltd. All rights reserved.
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