title: Systematic Evaluation of Industrial, Commercial, and Institutional Food Waste Management Strategies in the United States.
abstract: New regulations and targets limiting the disposal of food waste have been recently enacted in numerous jurisdictions. This analysis evaluated selected environmental implications of food waste management policies using life-cycle assessment. Scenarios were developed to evaluate management alternatives applicable to the waste discarded at facilities where food waste is a large component of the waste (e.g., restaurants, grocery stores, and food processors). Options considered include anaerobic digestion (AD), aerobic composting, waste-to-energy combustion (WTE), and landfilling, and multiple performance levels were considered for each option. The global warming impact ranged from approximately -350 to -45 kg CO2e Mg(-1) of waste for scenarios using AD, -190 to 62 kg CO2e Mg(-1) for those using composting, -350 to -28 kg CO2e Mg(-1) when all waste was managed by WTE, and -260 to 260 kg CO2e Mg(-1) when all waste was landfilled. Landfill diversion was found to reduce emissions, and diverting food waste from WTE generally increased emissions. The analysis further found that when a 20 year GWP was used instead of a 100 year GWP, every scenario including WTE was preferable to every scenario including landfill. Jurisdictions seeking to enact food waste disposal regulations should consider regional factors and material properties before duplicating existing statutes.
authors.affiliation: TeamAg, Incorporated , 120 Lake Street, Ephrata, Pennsylvania 17522, United States.
authors.forename: Keith L
authors.initials: KL
authors.lastname: Hodge
authors.affiliation: Department of Civil, Construction, and Environmental Engineering, North Carolina State University , Campus Box 7908, Raleigh, North Carolina 27695, United States.
authors.forename: James W
authors.initials: JW
authors.lastname: Levis
authors.affiliation: Department of Civil, Construction, and Environmental Engineering, North Carolina State University , Campus Box 7908, Raleigh, North Carolina 27695, United States.
authors.forename: Joseph F
authors.initials: JF
authors.lastname: DeCarolis
authors.affiliation: Department of Civil, Construction, and Environmental Engineering, North Carolina State University , Campus Box 7908, Raleigh, North Carolina 27695, United States.
authors.forename: Morton A
authors.initials: MA
authors.lastname: Barlaz
mesh_terms: D005502:Food; D012037:Refuse Disposal; D012987:Soil; D014481:United States; D064091:Waste Disposal Facilities; D018505:Waste Management / Q000379:methods*
chemical_list: D012987:Soil