Toshihiro Ozawa,Dang Trang Nguyen,Kozo Taguchi,



Microbial Fuel Cell,The chamber-less MFC,Vaseline,Multi Wall Carbon Nano Tube,Bacillus subtilis,


Today, energy production problem is seriously in the world. Wastes is one of the renewable energy resources, it is converted to electrical energy by Microbial Fuel Cells (MFC).  In this study, a chamber-less MFC was constructed by some acrylic parts, electrodes and a filter paper-based proton exchange membrane (PEM). Bacillus subtilis was incubated and fixed on activated carbon sheet. To replace chemically treated PEM, Vaseline was used to treat the paper-based PEM. To increase the output, multiwall carbon nanotube (MWCNT) liquid was used to glue the cathodic electrode and filter paper-based PEM. Current density and power density were measured. Maximum current density and power density were 55 and 3.86 , respectively. Internal resistance of MFC was estimated between 5kΩ and 10kΩ based on the polarization curve.  Vaseline-treated paper-based membrane and MWCNT gluing method had positive effectiveness on the performance of the chamber-less MFC.


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