数字农科院2.0

Environmental sustainability assessment of a new food waste anaerobic digestion and pyrolysis hybridization system

文献类型： 外文期刊

作者： Solomon Inalegwu Okopi;Jianfei Zeng;Xuetong Fan;Jiaxin Lu;Jiahao Cui;Yang Hu;Jiayu Wang;Jiaxin Chen;Oraléou Sangué Djandja;Yingqun Ma;Lei Che;Gu Zhaolin;Fuqing Xu

作者机构：

关键词： Bioenergy;Bones;Impurities;Integrated systems;Life cycle assessment;Plastics;Resource recovery

期刊名称： Waste Management

ISSN： 0956-053X

年卷期： 2024 年 179 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： This research conducted an environmental life cycle assessment (LCA) to evaluate an anaerobic digestion-co-pyrolysis (ADCo-Py) system in which pyrolysis was added to traditional food waste (FW) anaerobic digestion (AD) systems to treat the solid fraction and impurities separated from FW. The solid fraction, including impurities such as wooden chopsticks, plastics, eggshells, and bones, is usually incinerated, while pyrolysis can be a viable alternative to optimize FW treatment. The environmental impact of ADCo-Py was compared with stand-alone AD, pyrolysis, and ADCo-INC (AD with incineration of separated solids). The results indicated that both ADCo-Py (−1.726 kg CO2-Eq/kgFW) and ADCo-INC (−1.535 kg CO2-Eq/kgFW) outperform stand-alone AD (−0.855 kg CO2-Eq/kgFW) and pyrolysis (−0.181 kg CO2-Eq/kgFW) in mitigating global warming potential (GWP). Additionally, pretreatments were found to have the most significant influence on GWP, ecotoxicity potential (ETP), and acidification potential (AP). The two-step pretreatment in ADCo-Py, including the separation of solids and drying, significantly improved the environmental sustainability of the system when compared with standalone pyrolysis.

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