, Sang-Eun Oh 3

For monitoring environmental conditions of remote places, sustainable power generators are necessary to power telemetry sensor systems. A sediment microbial fuel cell (SMFC) is a device that produces electricity biologically from organic matters in sediment. Because a SMFC utilizes sediment organic materials and microbial catalysts in river or oceanic sediment, a SMFC can be a feasible solution for sustainable power generation in remote places. However, oligotrophic sediment conditions often limit energy source supply, resulting in insufficient power output for operating electronic devices. The objective of this study is to investigate power generation and anode bacterial communities of SMFCs with different anode materials and carbon sources for enhancement of power output and longevity of SMFCs. Four kinds of anode electrodes were tested in SMFCs; a magnesium electrode (M), a magnesium electrode supplied with chitin particles (M+C), a graphite electrode (G), and a graphite electrode supplied with chitin particles (G+C). Average maximum power density was highest in Mg+C (1878 ± 982 mW m-2), followed by M (848 ± 348 mW m-2), G+C (1.9 ± 0.6 mW m-2) and G (0.7 ± 0.6 mW