Performance of microbial fuel cell with volatile fatty acids from food wastes
- 643 Downloads
Food wastes were used as feedstock for the direct production of electricity in a microbial fuel cell (MFC). MFC operations with volatile fatty acids (VFA) produced 533 mV with a maximum power density of 240 mW/m2. Short-chain VFAs, such as acetate, were degraded more rapidly and thus supported higher power generation than longer chain ones. In general, the co-existence of other, different VFAs slowed the removal of each VFA, which indicated that anodic microbes were competing for different substrates. 16S rRNA gene analysis using PCR-DGGE indicated that the MFC operation with VFAs had enriched unique microbial species.
KeywordsFood waste Microbial fuel cell Ostrich dung inoculum Volatile fatty acid
- Chang HN, Lim SJ, Kwon SH, Lee WG, Choi DW (2002) Method for removal of nitrogen and phosphorus using fermentation liquor resulting from organic wastes with low nitrogen and phosphorus contents. US Patent 6,406,628Google Scholar
- Chang HN, Chang ST, Jung H-m, Kang JW, Jeong CM (2010a) Method for treating food waste of collective residence facilities. KR Patent 10-0946368Google Scholar
- Choo YF, Lee J, Chang IS, Kim BH (2006) Bacterial communities in microbial fuel cells enriched with high concentrations of glucose and glutamate. J Microbiol Biotechnol 16(9):1481–1484Google Scholar
- Venkata Mohan S, Mohanakrishna G, Purushotham Reddy B, Saravanan R, Sarma PN (2008a) Bioelectricity generation from chemical wastewater treatment in mediatorless (anode) microbial fuel cell (MFC) using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment. Biochem Eng J 39(1):121–130CrossRefGoogle Scholar