Dark fermentation, anaerobic digestion and microbial fuel cells: An integrated system to valorize swine manure and rice bran
메타 데이터
바이오화학분류
바이오정밀화학
연료
논문
Dark fermentation, anaerobic digestion and microbial fuel cells: An integrated system to valorize swine manure and rice bran
학술지
Waste management
저자명
Schievano, A.; Sciarria, T.P.; Gao, Y.C.; Scaglia, B.; Salati, S.; Zanardo, M.; Quiao, W.; Dong, R.; Adani, F.
초록
This work describes how dark fermentation (DF), anaerobic digestion (AD) and microbial fuel cells (MFC) and solid-liquid separation can be integrated to co-produce valuable biochemicals (hydrogen and methane), bioelectricity and biofertilizers. Two integrated systems (System 1: AD+MFC, and System 2: DF+AD+MFC) are described and compared to a traditional one-stage AD system in converting a mixture (COD=124+/-8.1g<SUB>O2</SUB>kg<SUP>-1</SUP><SUB>Fresh Matter</SUB>) of swine manure and rice bran. System 1 gave a biomethane yield of 182 L<SUB>CH4</SUB>kg<SUP>-1</SUP><SUB>COD-added</SUB>, while System 2 gave L yields of bio-hydrogen and bio-methane of 27.3+/-7.2L<SUB>H2</SUB>kg<SUP>-1</SUP><SUB>COD-added</SUB> and 154+/-14L<SUB>CH4</SUB>kg<SUP>-1</SUP><SUB>COD-added</SUB>, respectively. A solid-liquid separation (SLS) step was applied to the digested slurry, giving solid and liquid fractions. The liquid fraction was treated via the MFC-steps, showing power densities of 12-13Wm<SUP>-3</SUP> (500Ω) and average bioelectricity yields of 39.8Whkg<SUP>-1</SUP><SUB>COD</SUB> to 54.2Whkg<SUP>-1</SUP><SUB>COD</SUB>.