Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7076845 | Bioresource Technology | 2014 | 24 Pages |
Abstract
Improvement on electron shuttle-mediated extracellular electron transfer (EET) is of great potential to enhance the power output of MFCs. In this study, sophorolipid was added to enhance the performance of Pseudomonas aeruginosa-inoculated MFC by improving the electron shuttle-mediated EET. Upon sophorolipid addition, the current density and power density increased â¼1.7 times and â¼2.6 times, respectively. In accordance, significant enhancement on pyocyanin production (the electron shuttle) and membrane permeability were observed. Furthermore, the conditions for sophorolipid addition were optimized to achieve maximum pyocyanin production (14.47 ± 0.23 μg/mL), and 4 times higher power output was obtained compared to the control. The results substantiated that enhanced membrane permeability and pyocyanin production by sophorolipid, which promoted the electron shuttle-mediated EET, underlies the improvement of the energy output in the P. aeruginosa-inoculated MFC. It suggested that addition of biosurfactant could be a promising way to enhance the energy generation in MFCs.
Related Topics
Physical Sciences and Engineering
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Authors
Hai-Bo Shen, Xiao-Yu Yong, Yi-Lu Chen, Zhi-Hong Liao, Rong-Wei Si, Jun Zhou, Shu-Ya Wang, Yang-Chun Yong, Ping-Kai OuYang, Tao Zheng,