Environmental impact assessment of emissions from non-recycled plastic-to-energy processes  

作　　者：Henry Zhang Nikolas J.Themelis Athanasios Bourtsalas 

机构地区：[1]Montgomery High School,Skillman,NJ 08558,USA [2]Earth Engineering Center,Columbia University,New York,NY 10027,USA

出　　处：《Waste Disposal and Sustainable Energy》2021年第1期1-11,共11页废弃物处置与可持续能源（英文）

摘　　要：Generally,plastics pose a variety of environmental impacts due to their increased use and non-biodegradability.End-of-life treatment is a viable way of recovering energy from plastics while at the same time reducing the amount of plastics disposed of in landfills.This paper studies the environmental impact of Non-Recycled Plastics(NRP)-to-energy processes.Three waste treatment processes were considered for NRP:pyrolysis,waste-to-energy(WtE),and landfill.The environmental impact assessment results indicated that conversion technologies such as pyrolysis and WtE are preferred over landfill.The total energy consumed in the pyrolysis process was 24635.7 MJ/tonne.The conversion technologies have a lower environmental impact and produced net positive energy from NRP.The global warming potential shows that pyrolysis(3.91 kg eq.CO_(2))contributes the least to global warming than waste-to-energy(18.56 kg eq.CO_(2))and landfill(17.5 kg eq.CO_(2)).However,sensitivity analysis suggested that the inefficiencies of the current conversion technologies should be addressed.Between the two technologies studied,pyrolysis contributed less environmental burden,having a lower global warming potential,a higher efficiency in energy conversion,and less harmful emissions such as selenium and methane.

关 键 词：Non-recycled plastic Environmental impact assessment Life cycle impact assessment End-of-life treatment Waste-to-energy(WtE) LANDFILL PYROLYSIS 

分 类 号：X705[环境科学与工程—环境工程]