title: The anaerobic co-digestion of food waste and cattle manure.
abstract: This study assessed the anaerobic co-digestion of food waste and cattle manure, in order to identify the key parameters that determine the biogas and methane yield. Results of both batch and semi-continuous tests indicated that the total methane production is enhanced in co-digestion, with an optimum food waste (FM) to cattle manure (CM) ratio of 2. At this ratio, the total methane production in batch tests was enhanced by 41.1%, and the corresponding methane yield was 388 mL/g-VS. In the semi-continuous mode, the total methane production in co-digestion, at the organic loading rate (OLR) of 10 g-VSFW/L/d, increased by 55.2%, corresponding to the methane yield of 317 mL/g-VS. Addition of cattle manure enhanced the buffer capacity (created by NH4+ and VFAs), allowing high organic load without pH control. The C/N ratio and the higher biodegradation of lipids might be the main reasons for the biogas production improvement.
authors.affiliation: Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Cunsheng
authors.initials: C
authors.lastname: Zhang
authors.forename: Gang
authors.initials: G
authors.lastname: Xiao
authors.forename: Liyu
authors.initials: L
authors.lastname: Peng
authors.forename: Haijia
authors.initials: H
authors.lastname: Su
authors.forename: Tianwei
authors.initials: T
authors.lastname: Tan
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology; D002417:Cattle; D019649:Food Industry; D005516:Food Microbiology; D007220:Industrial Waste / Q000517:prevention & control*; D008372:Manure / Q000382:microbiology*; D008697:Methane / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods*
chemical_list: D007220:Industrial Waste; D008372:Manure; D008697:Methane