Global warming potential of material fractions occurring in source-separated organic household waste treated by anaerobic digestion or incineration under different framework conditions

摘要: This study compared the environmental profiles of anaerobic digestion (AD) and incineration, in relation to global warming potential (GWP), for treating individual material fractions that may occur source-separated organic household waste (SSOHW). Different framework conditions representative European Union member countries were considered. For AD, biogas utilisation with a engine was considered two situations investigated – combustion (1) combined heat power production (CHP) (2) electricity only. four technology options currently available Europe covered: an average incinerator CHP production, mainly (3) (4) state-of-the art working at high energy recovery efficiencies. The performed using life cycle assessment its consequential approach. Furthermore, role waste-sorting guidelines (defined by allowed SSOHW) GWP overall SSOHW AD investigated. A case-study 1 tonne under Denmark conducted. Under given assumptions, vegetable food only fraction which always better incineration. animal waste, kitchen tissue, vegetation dirty paper, unless it highly efficient incinerator. Material such as moulded fibres cardboard attractive albeit when incineration compared. Animal straw, contrast, incinerate. Considering total amounts generated within households Denmark, (both derived) tissue are main allowing mitigation is inclusion other sorting be less importance.