Tenhunen-Lunkka Anna, Rommens Tom, Vanderreydt Ive, Mortensen Lars
VTT Technical Research Centre of Finland Ltd, Tekniikantie 21, 02044 Espoo, Finland.
VITO, Boeretang 200, 2400 Mol, Belgium.
Circ Econ Sustain. 2023;3(1):475-510. doi: 10.1007/s43615-022-00192-8. Epub 2022 Jul 14.
Current rising concerns about environmental and climate impacts in production, consumption and end-of-life of plastics have led to efforts to switch from linear to circular economy of plastics in Europe. Greenhouse gas emissions are likely to decrease with a transition to a circular system; however, a systematic and integrated perspective on plastics and the carbon cycle is currently missing in the debate on plastics. In this study, a model to estimate greenhouse gas emissions of the current mostly linear plastics value chain of the EU in 2018 and a future scenario, 2025 model, were created. By 2025 if current policy targets are reached, the plastic packaging recycling rate should be 50%, PET-based drinking bottles should include 25% recycled content, 77% collection target for plastic bottles, 10 Mt recyclates should enter the markets, uptake of bio-based plastics is estimated by European bioplastics to increase from current 1 to 1.32% and landfilling will continue to decrease according to the current trend at 3.85%. Total greenhouse gas emissions caused by the current plastics value chain are estimated at 208 million tonnes of CO2-eq. The 2025 model estimates that total plastics value chain emissions will be 182 Mt of CO2-eq. Reduction potential is approximately 26 Mt of CO2-eq or 13%.
当前,人们对塑料生产、消费及报废阶段的环境和气候影响愈发关注,这促使欧洲努力从线性塑料经济转向循环塑料经济。向循环系统过渡可能会减少温室气体排放;然而,在关于塑料的辩论中,目前缺少对塑料和碳循环的系统综合视角。在本研究中,创建了一个模型,用于估算2018年欧盟当前大多为线性的塑料价值链的温室气体排放量以及一个未来情景(2025年模型)。到2025年,如果实现当前政策目标,塑料包装回收率应达到50%,基于聚对苯二甲酸乙二酯(PET)的饮料瓶应包含25%的回收成分,塑料瓶的回收目标为77%,1000万吨回收物应进入市场,欧洲生物塑料协会估计生物基塑料的使用量将从目前的1%增加到1.32%,并且按照当前趋势,填埋量将继续下降至3.85%。当前塑料价值链造成的温室气体排放总量估计为2.08亿吨二氧化碳当量。2025年模型估计,塑料价值链的总排放量将为1.82亿吨二氧化碳当量。减排潜力约为2600万吨二氧化碳当量,即13%。