Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7708387 | International Journal of Hydrogen Energy | 2018 | 9 Pages |
Abstract
Microfiltration membrane, a potential alternative for traditional proton exchange membrane (PEM) due to its strong ability of proton transfer, cost-effectiveness, sustainability and high anti-pollution capability in microbial fuel cell (MFC). In this study, a novel MFC using bilayer microfiltration membrane as separator, inoculated sludge as biocatalyst and P-nitroaniline (PNA) as electron donor was successfully constructed to evaluate its performance. Furthermore, we also investigated the effects of initial PNA concentration, co-substrate (acetate) and cultivated microorganisms on MFC performance. Results showed that the maximum power density of 4.43, 3.05, 2.62 and 2.18 mW mâ2 was acquired with 50, 100, 150 and 300 mg Lâ1 of PNA as substrate, respectively. However, with the addition of 500 mg Lâ1 of acetate into reaction system contained 100 mg Lâ1 of PNA, the higher power production of 6.24 mW mâ2 was obtained, which was 2.05 times higher than that using 100 mg Lâ1 of PNA as the sole substrate. Meanwhile, the MFC working on cultivated microorganisms displayed a maximal power density of 7.32 mW mâ2 and a maximum PNA degradation efficiency of 54.75%. And after an electricity production cycle, the number of microbes in the anode chamber significantly increased. This study provides a promising technology for bioelectricity generation by biodegrading biorefractory pollutants in wastewater.
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Authors
Cui Lai, Bisheng Li, Ming Chen, Guangming Zeng, Danlian Huang, Lei Qin, Xigui Liu, Min Cheng, Jia Wan, Chunyan Du, Fanglong Huang, Shiyu Liu, Huan Yi,