Dark fermentation, anaerobic digestion and microbial fuel cells: An integrated system to valorize swine manure and rice bran

作者：Schievano, Andrea; Sciarria, Tommy Pepe; Gao, Yong Chang; Scaglia, Barbara; Salati, Silvia; Zanardo, Marina; Quiao, Wei; Dong, Renjie; Adani, Fabrizio^*

来源：Waste Management, 2016, 56: 519-529.

DOI：10.1016/j.wasman.2016.07.001

• Biogas
• Bio-fertilizers
• Microbial fuel cell
• Integrated system

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 +/- 8.1 g(O2) kg(Fresh Matter)(-1)) of swine manure and rice bran. System 1 gave a biomethane yield of 182 L-CH4 kg(COD-added)(-1), while System 2 gave L yields of bio-hydrogen and bio-methane of 27.3 +/- 7.2 L-H2 kg(COD-added)(-1) and 154 +/- 14 L-CH4 kg(COD-added)(-1), 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 12-13 W m(-3) (500 Omega) and average bioelectricity yields of 39.8 W h kg(COD)(-1) to 54.2 W h kg(COD)(-1).

• 出版日期2016-10
• 单位中国农业大学