title: Anaerobic co-digestion of commercial food waste and dairy manure: Characterizing biochemical parameters and synergistic effects.
abstract: Anaerobic digestion of commercial food waste is a promising alternative to landfilling commercial food waste. This study characterized 11 types of commercial food wastes and 12 co-digestion blends. Bio-methane potential, biodegradable fraction, and apparent first-order hydrolysis rate coefficients were reported based upon biochemical methane potential (BMP) assays. Food waste bio-methane potentials ranged from 165 to 496 mL CH4/g VS. Substrates high in lipids or readily degradable carbohydrates showed the highest methane production. Average bio-methane potential observed for co-digested substrates was -5% to +20% that of the bio-methane potential of the individual substrates weighted by VS content. Apparent hydrolysis rate coefficients ranged from 0.19d(-1) to 0.65d(-1). Co-digested substrates showed an accelerated apparent hydrolysis rate relative to the weighted average of individual substrate rates. These results provide a database of key bio-digestion parameters to advance modeling and utilization of commercial food waste in anaerobic digestion.
authors.affiliation: Golisano Institute for Sustainability, Rochester Institute of Technology, Rochester, NY 14623, United States.
authors.forename: Jacqueline H
authors.initials: JH
authors.lastname: Ebner
authors.affiliation: Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Santiago, Chile.
authors.forename: Rodrigo A
authors.initials: RA
authors.lastname: Labatut
authors.affiliation: Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, NY 14623, United States.
authors.forename: Jeffrey S
authors.initials: JS
authors.lastname: Lodge
authors.affiliation: Golisano Institute for Sustainability, Rochester Institute of Technology, Rochester, NY 14623, United States; New York State Pollution Prevention Institute, Rochester Institute of Technology, Rochester, NY 14623, United States.
authors.forename: Anahita A
authors.initials: AA
authors.lastname: Williamson
authors.affiliation: Golisano Institute for Sustainability, Rochester Institute of Technology, Rochester, NY 14623, United States. Electronic address: tatasp@rit.edu.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Trabold
mesh_terms: D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D003612:Dairying; D005502:Food; D008372:Manure; D012037:Refuse Disposal / Q000379:methods*; D014866:Waste Products
chemical_list: D008372:Manure; D014866:Waste Products
keywords: Anaerobic co-digestion (AcoD); Biochemical methane potential (BMP); Biowaste; Commercial food waste