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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2021, Vol. 3 Issue (1): 1-11    DOI: 10.1007/s42768-020-00063-8
    
未循环塑料能源转化过程污染物排放的环境影响评估
Environmental impact assessment of emissions from non-recycled plastic-to-energy processes
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摘要： 普遍的塑料不断增长的使用量和不可生物降解特性导致了一系列的环境影响。塑料的最终处置不仅能回收其中的能源，同时能减少塑料进填埋场的处理量，是一种可行的方法。本文研究了未循环塑料（NRP）不同能源转化过程对环境的影响。对NRP处置来说，考虑了三种处置过程：热解、焚烧发电和填埋。环境评估结果表明，以焚烧发电和热解为代表的转化技术优于填埋处置。塑料热解过程消耗的能量为24635.7MJ/吨。NRP转化技术具有较低的环境影响，同时有正向的能量产出。全球变暖潜能值方面，热解（3.91kg eq. CO2）对全球变暖影响最小，对比焚烧发电（18.56kg eq. CO2）和填埋（17.50kg eq. CO2）。然而，敏感性分析表明，需要重视NRP转化技术中存在的低效问题。对比两种NRP转化技术，热解具有较低的环境负担，较小的全球变暖潜能值，较高的能量转换效率和较低的有害物排放，比如硒和甲烷。
Abstract: 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.
出版日期: 2021-06-27
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Henry Zhang
Nikolas J. Themelis & Athanasios Bourtsalas

引用本文:

Henry Zhang, Nikolas J. Themelis & Athanasios Bourtsalas. Environmental impact assessment of emissions from non-recycled plastic-to-energy processes. Waste Disposal & Sustainable Energy, 2021, 3(1): 1-11.

链接本文:

https://www.zjujournals.com/wdse/CN/10.1007/s42768-020-00063-8    或    https://www.zjujournals.com/wdse/CN/Y2021/V3/I1/1

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