What Is the Most Environmentally Beneficial Way to Treat Commercial Food Waste

摘要: Commercial food waste represents a relatively available high-quality feedstock for landfill diversion to biological treatment. A life-cycle assessment was performed commercial processed through aerobic composting systems of varying complexity, anaerobic digestion, and landfills with without gas collection energy recovery, as well bioreactor landfill. The functional unit 1000 kg plus 550 branches that are used bulking agent. For each alternative, global warming potential, NO(x) SO(2) emissions, total net use were determined. Anaerobic digestion the most environmentally beneficial treatment option, leading -395 CO(2)e per unit. This result driven by avoided electricity generation soil carbon storage from resulting amendment. alternatives led between -148 -64 CO(2)e, whereas emission -240 1100 CO(2)e. traditional recovery predicted have lower emissions than any when fertilizer offset used. There is variation in results based on uncertainty inputs, relative rankings dependent amendment compost peat has greater offsets value fertilizer.