期刊
BIOCHEMICAL ENGINEERING JOURNAL
卷 117, 期 -, 页码 87-91出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.bej.2016.09.013
关键词
Microbial fuel cell; Produced water; High salinity; Desalination; H. praevalens; M. hydrocarbonoclasticus
资金
- BP North America
Hydraulic fracturing for oil and gas production can generate large volumes of highly saline produced waters that pose a significant disposal challenge and a potential opportunity for reuse. Here, we report on a microbial fuel cell (MFC) fed with produced water (Barnett Shale), which produced power (47 mW/m(2)) and accomplished a COD removal efficiency of 68% (influent COD 10,520 +/- 1340 mg/L). Bacterial population analysis showed two autochthonous halophilic species colonizing the anode, H. praevalens and M. hydrocarbonoclasticus. In addition, we demonstrated that hypersaline MFCs (100 g/L NaCl) can produce electricity to power a capacitive deionization (CDI) device for desalination, with a salt adsorption capacity of up to 40 mg of salt per g of carbon electrode. This is the first report of a MFC operating with hypersaline produced water, and illustrates the potential to couple MFCs with CDI to enable desalination and reuse of hypersaline wastewaters. (C) 2016 Published by Elsevier B.V.
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