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单层和多层薄膜回收过程的生命周期评估：比较

Lifecycle Assessment for Recycling Processes of Monolayer and Multilayer Films: A Comparison.

作者信息

Koinig Gerald, Grath Elias, Barretta Chiara, Friedrich Karl, Vollprecht Daniel, Oreski Gernot

机构信息

Chair of Waste Processing Technology and Waste Management, Department of Environmental and Energy Process Engineering, Montanuniversitaet Leoben, Franz Josef-Straße 18, 8700 Leoben, Austria.

Polymer Competence Center Leoben GmbH, Roseggerstraße 12, 8700 Leoben, Austria.

出版信息

Polymers (Basel). 2022 Sep 1;14(17):3620. doi: 10.3390/polym14173620.

DOI:10.3390/polym14173620
PMID:36080696
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9460591/
Abstract

This work covers a lifecycle assessment of monolayer and multilayer films to quantify the environmental impacts of changing the management of plastic film waste. This lifecycle assessment offers the possibility of quantifying the environmental impacts of processes along the lifecycle of monolayer and multilayer films and mapping deviating impacts due to changed process parameters. Based on the status quo, the changes in global warming potential and abiotic fossil resource depletion were calculated in different scenarios. The changes included collecting, sorting, and recycling mono- and multilayer films. The "Functional Unit" under consideration comprised 1000 kg of plastic film waste, generated as post-consumer waste in Austria and captured in the lightweight packaging collection system. The results showed the reduction of environmental impacts over product lifecycles by improving waste management and creating a circular economy. Recycling all plastic film reduced global warming potential by 90% and abiotic fossil resource consumption by 93%. The necessary optimisation steps to meet the politically required recycling rates by 2025 and 2030 could be estimated, and the caused environmental impacts are presented. This work shows the need for increased collection, recycling, and significant improvement in the sorting of films to minimise global warming potential and resource consumption.

摘要

这项工作涵盖了单层和多层薄膜的生命周期评估，以量化改变塑料薄膜废物管理方式对环境的影响。这种生命周期评估提供了量化单层和多层薄膜生命周期内各流程对环境影响的可能性，并绘制因工艺参数变化而产生的偏差影响。基于现状，在不同情景下计算了全球变暖潜势和非生物化石资源耗竭的变化。这些变化包括单层和多层薄膜的收集、分类和回收。所考虑的“功能单位”包括1000千克塑料薄膜废物，这些废物作为奥地利的消费后废物产生，并在轻型包装收集系统中收集。结果表明，通过改善废物管理和创建循环经济，可减少产品生命周期内对环境的影响。回收所有塑料薄膜可使全球变暖潜势降低90%，非生物化石资源消耗降低93%。可以估算出到2025年和2030年达到政治上要求的回收率所需的优化步骤，并呈现由此产生的环境影响。这项工作表明，需要增加薄膜的收集、回收，并大幅改进薄膜分类，以尽量减少全球变暖潜势和资源消耗。

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本文引用的文献

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Polymers (Basel). 2022 Apr 11;14(8):1553. doi: 10.3390/polym14081553.
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Sci Adv. 2020 Nov 20;6(47). doi: 10.1126/sciadv.aba7599. Print 2020 Nov.
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Beyond Mechanical Recycling: Giving New Life to Plastic Waste.超越机械回收：赋予塑料垃圾新生。
Angew Chem Int Ed Engl. 2020 Sep 1;59(36):15402-15423. doi: 10.1002/anie.201915651. Epub 2020 Jun 25.
4
Plastic flexible films waste management - A state of art review.塑料软膜废物管理——现状综述。
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