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 ∼ 1.7 times and ∼ 2.6 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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Shen HB,Yong XY,Chen YL,Liao ZH,Si RW,Zhou J,Wang SY,Yong YC,OuYang PK,Zheng Tdoi
10.1016/j.biortech.2014.05.093subject
Has Abstractpub_date
2014-09-01 00:00:00pages
490-4eissn
0960-8524issn
1873-2976pii
S0960-8524(14)00801-3journal_volume
167pub_type
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