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Bioconversion of organic solid wastes with soils from the Amazonian and high Andean regions of Ecuador in single chamber microbial fuel cells

Abstract:

Bioelectricity generation from electrogenic bacteria in single chamber microbial fuel cells (MFCs) was monitored. Carbon fiber as electrodes and two different inoculums were used. The first inoculum was prepared with undisturbed soil and organic solid wastes from the Amazonian region in Ecuador. The second was prepared using undisturbed soil and organic solid wastes from the high Andean region in Ecuador. The process was monitored during 171 days without renovation of microbial fuel. In this work, MFCs with volumes of 20 L, 12 L and 4 L were employed, observing the influence on the output voltage. The best experiment with soil from the high Andean region were the MFCs of 12 L with 317 mV as average generation, while the experiment with soil from the Amazonian region were the MFCs of 4 L, producing 270 mV.