Characterization of bacterial communities in anode microbial fuel cells fed with glucose, propyl alcohol and methanol
2017
Zhang, S. H. | Qiu, C. H. | Fang, C. F. | Ge, Q. L. | Hui, Y. X. | Han, B. | Pang, S.
Bacterial communities in anode microbial fuel cells (MFC) obtained from anaerobic digester sludge in a municipal wastewater treatment plant (Nanjing, China) were investigated. Glucose, propyl alcohol and methanol were used as sole carbon source in two-chamber MFC. The results showed that a reproducible cycle of power production can be formed in MFC fed with 3 substrates and glucose-fed MFC had the highest peak power density of 1499 ± 33 mW/m³, followed by methanol- (1264 ± 47 mW/m³) and propyl alcohol-fed MFC (1192 ± 36 mW/m³). Firmicutes, Bacteroidetes, Verrucomicrobia, Proteobacteria, Synergistetes and Armatimonadetes were dominant phyla in 3 MFC. Firmicutes was the most dominant phylum in glucose-fed MFC samples and Bacteroidetes prevailed in methanol- and propyl alcohol-fed MFC. These data indicate that propyl alcohol and methanol along with glucose can be used as substrates of MFC.
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