Impact of acetic acid in methane production from glycerol/acetic acid co-fermentation

摘要

Co-fermentation of glycerol and acetic acid in anaerobic digestion was set up to generate biogas in batch reactors under mesophilic condition, pH 7. The experiments were varied COD ratios of glycerol and acetic acid were varied with the total combined COD of 5,20 0 mg/L. The maximum methane yield was obtained from glycerol/acetic acid ratio of 6:4. The cumulative methane, production rate and lag phase were 240 mL, 14 mL hr(-1), and 11 hr. The research indicated acetic acid boosted methane production when it was co-fermented with glycerol. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.