期刊
BIORESOURCE TECHNOLOGY
卷 195, 期 -, 页码 194-201出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.06.013
关键词
Osmotic microbial fuel cells; Forward osmosis; Ion exchange membrane; Internal resistance; Wastewater treatment
资金
- NPRP grant from the Qatar National Research Fund (Qatar Foundation) [6-289-2-125]
Osmotic microbial fuel cells (OsMFCs) are a new type of MFCs with integrating forward osmosis (FO). However, it is not well understood why electricity generation is improved in OsMFCs compared to regular MFCs. Herein, an approach integrating experimental investigation and mathematical model was adopted to address the question. Both an OsMFC and an MFC achieved similar organic removal efficiency, but the OsMFC generated higher current than the MFC with or without water flux, resulting from the lower resistance of FO membrane. Combining NaCl and glucose as a catholyte demonstrated that the catholyte conductivity affected the electricity generation in the OsMFC. A mathematical model of OsMFCs was developed and validated with the experimental data. The model predicated the variation of internal resistance with increasing water flux, and confirmed the importance of membrane resistance. Increasing water flux with higher catholyte conductivity could decrease the membrane resistance. (C) 2015 Elsevier Ltd. All rights reserved.
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