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Shen HB, Yong XY, Chen YL, Liao ZH, Si RW, Zhou J, Wang SY, Yong YC, OuYang PK, Zheng T. Enhanced bioelectricity generation by improving pyocyanin production and membrane permeability through sophorolipid addition in Pseudomonas aeruginosa-inoculated microbial fuel cells. BIORESOURCE TECHNOLOGY 2014; 167:490-494. [PMID: 25011080 DOI: 10.1016/j.biortech.2014.05.093] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 05/23/2014] [Accepted: 05/24/2014] [Indexed: 06/03/2023]
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.
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Affiliation(s)
- Hai-Bo Shen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 210009, China
| | - Xiao-Yu Yong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 210009, China
| | - Yi-Lu Chen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China
| | - Zhi-Hong Liao
- Biofuels Institute, School of the Environment, Jiangsu University, Zhenjiang 212013, China
| | - Rong-Wei Si
- Biofuels Institute, School of the Environment, Jiangsu University, Zhenjiang 212013, China
| | - Jun Zhou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 210009, China
| | - Shu-Ya Wang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 210009, China
| | - Yang-Chun Yong
- Biofuels Institute, School of the Environment, Jiangsu University, Zhenjiang 212013, China.
| | - Ping-Kai OuYang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 210009, China
| | - Tao Zheng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 210009, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 210009, China.
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3-D Micro and Nano Technologies for Improvements in Electrochemical Power Devices. MICROMACHINES 2014. [DOI: 10.3390/mi5020171] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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