Wastewater treatment and electricity generation from a sunlight-powered single chamber microbial fuel cell

[Display omitted] •Hybrid MFC is constructed of conventional bioanode coupled with TiO2 nanotube arrays photoanode.•Hybrid MFC is employed for simultaneous MB dye degradation and electricity generation.•The MB dye degradation increased under simulated solar irradiation.•Overall hybrid MFC performanc...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2018-05, Vol.358, p.432-440
Main Authors: Lee, Sung Hyun, Lee, Kyeong-Seok, Sorcar, Saurav, Razzaq, Abdul, Grimes, Craig A., In, Su-Il
Format: Article
Language:English
Subjects:
Biochemical fuel cells
Circuit design
Configuration management
Dyes
Electricity generation
Fuel cells
Fuel technology
Illumination
Light
Methylene blue
Microbial fuel cell
Microorganisms
Photoanode
Photodegradation
Solar energy
TiO2 nanotube arrays
Titanium dioxide
Wastewater treatment
Water treatment
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Summary:[Display omitted] •Hybrid MFC is constructed of conventional bioanode coupled with TiO2 nanotube arrays photoanode.•Hybrid MFC is employed for simultaneous MB dye degradation and electricity generation.•The MB dye degradation increased under simulated solar irradiation.•Overall hybrid MFC performance also enhanced under simulated solar irradiation.•Improved performance is attributed to increased electron flow in external circuit. A novel hybrid single chamber microbial fuel cell is described in which a TiO2 nanotube array (TNT) photoanode is coupled with a conventional bioanode to achieve simultaneous degradation of methylene blue (MB) dye with improved power generation. As compared to a conventional microbial fuel cell (MFC), the described hybrid-MFC exhibits enhanced power density (14%), current density (33%), and voltage (4%) while simultaneously degrading MB dye, 82.79% after 3.5h of operation under simulated solar light illumination. The key factor attributed to the enhanced performance is the addition of photogenerated electrons to the MFC external circuit. The effect of various design configurations is also investigated, such as the presence of an air cathode, anode type, and illumination. The hybrid-MFC strategy provides new directions for productive and economical utilization of microbial fuel cells.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2017.10.030