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. CO₂) contributes the least to global warming than waste-to-energy (18.56 kg eq. CO₂) and landfill (17.5 kg eq. CO₂). 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.

通常，塑料由于其增加的使用和不可生物降解性而对环境造成了各种影响。报废处理是一种从塑料中回收能量的可行方法，同时减少了垃圾填埋场处置的塑料数量。本文研究了非再生塑料（NRP）转化为能源的过程对环境的影响。NRP考虑了三个废物处理过程：热解，废物转化为能源（WtE）和垃圾填埋场。环境影响评估结果表明，热解和WtE等转化技术优于垃圾填埋场。热解过程中消耗的总能量为24635.7 MJ /吨。转换技术对环境的影响较小，并从NRP产生净正能量。全球变暖的潜力表明，热解（3.91 kg eq。CO₂）对全球变暖的贡献最小于废物转化为能源（18.56 kg eq。CO ₂）和垃圾填埋场（17.5 kg eq。CO ₂）。但是，敏感性分析建议应解决当前转换技术的低效率问题。在所研究的两种技术之间，热解对环境的负担较小，具有较低的全球变暖潜能，较高的能量转换效率以及较少的有害排放物，例如硒和甲烷。