Analysis of Sediment-Microbial Fuel Cell Power Production in Series and Parallel Configurations

摘要

Renewable power from sediment microbial fuel cells (SMFCs) are prospect to utilize and to operate low power devices like remote sensor etc., in the area where operation of low power devices is needed in regular human life. To scale-up the size we think of increasing the electrode surface area but it results in decreasing power density, which demonstrate that SMFCs find it difficult to scale-up with size. Development of different approaches to increase the power generation from sediment MFCs is to be needed as to scale-up the MFC. Two arrangements have been tried to check the different possible results. Series arrangement shows voltage scale-up, and peak voltage was recorded at 54.5 mV. Parallel arrangement shows peak current at 187.2 μA with an external resistor of 47 ?. To obtain polarization curve several resistors ranging from 47-4700 ? can be used. Graphene, a flat monolayer of carbon molecules firmly stuffed into a two-dimensional (2D) honeycomb cross section, was used in the present work in the form of graphene disks as anode and cathode, connected to a load. Smaller-sized individually operated SMFCs connected to a power management system that electrically isolates the anodes and cathodes, have been used in this study.