Anaerobic co-digestion of municipal organic wastes and pre-treatment to enhance biogas production from waste.
Co-digestion and pre-treatment have been recognized as effective, low-cost and commercially viable approaches to reduce anaerobic digestion process limitations and improve biogas yields. In our previous batch-scale study, fat, oil, and grease (FOG) was investigated as a suitable potential co-substrate, and thermo-chemical pre-treatment (TCPT) at pH = 10 and 55 °C improved CH4 production from FOG co-digestions. In this project, co-digestions with FOG were studied in bench-scale two-stage thermophilic semi-continuous flow co-digesters with suitable TCPT (pH = 10, 55 °C). Overall, a 25.14 ± 2.14 L/d (70.2 ± 1.4% CH4) biogas production was obtained, which was higher than in the two-stage system without pre-treatment. The results could provide valuable fundamental information to support full-scale investigations of anaerobic co-digestion of municipal organic wastes.
Department of Civil Engineering, Queen's University, Kingston, ON, Canada K7L 3N6 E-mail: champagne@civil.queensu.ca.
Chenxi
C
Li
Department of Civil Engineering, Queen's University, Kingston, ON, Canada K7L 3N6 E-mail: champagne@civil.queensu.ca.
Pascale
P
Champagne
Department of Civil Engineering, Queen's University, Kingston, ON, Canada K7L 3N6 E-mail: champagne@civil.queensu.ca.
Bruce C
BC
Anderson
D000693:Anaerobiosis; D019149:Bioreactors / Q000382:microbiology*; D012037:Refuse Disposal / Q000379:methods; D012722:Sewage / Q000382:microbiology
D012722:Sewage