Environmental Protection Department, Perm National Research Polytechnic University, Perm, Russia.
University of Novi Sad, Faculty of Technical Sciences, Department of Environmental Engineering, Novi Sad, Serbia.
Waste Manag Res. 2021 May;39(5):720-730. doi: 10.1177/0734242X211011222. Epub 2021 Apr 17.
Efficient collection systems and information about the characteristics and quality of collected secondary plastic waste flows are of fundamental importance for the development of circular economies. In order to assess the effectiveness of the implementation of separate collection systems for plastic packaging, especially polyethylene terephthalate (PET) bottles, characteristic of the collected PET bottles in street mesh containers were studied in the city of Perm, Russia. The share of extraneous fractions was assessed and differentiation was carried out by volume, type of product, label presence, shape, content of solid and liquid impurities and colour. These results indicate that PET composition in different seasons is very similar, despite the assumption that the consumption of PET bottles in the spring and autumn seasons varies. In the mesh containers, up to 34% of the items were foreign objects, considering that only PET bottles should be collected. In each dimensional flow of PET bottles, the proportion of transparent bottles prevailed; it ranged from 31% to 70%. Based on the results of the experiment, almost all PET bottle categories had a standard shape, except packaging for food products and household chemicals, in which 26-27% of PET bottles had a non-standard shape. The results about charactersitic of source-separated PET bottles are fundamental for goal-oriented design and implementation of collection, recycling technologies, secondary separation facilities, the economics of recycling intitatives and reverse vending machines for collecting materials.
高效的收集系统以及有关收集到的二手塑料废物流特征和质量的信息，对于发展循环经济至关重要。为了评估塑料包装（特别是聚对苯二甲酸乙二醇酯 (PET) 瓶）专用分类收集系统的实施效果，对俄罗斯彼尔姆市街道网格容器中收集的 PET 瓶的特征进行了研究。评估了外来物的比例，并根据体积、产品类型、标签存在、形状、固体和液体杂质含量以及颜色进行了区分。这些结果表明，尽管人们认为春季和秋季的 PET 瓶消耗量不同，但不同季节收集到的 PET 组成非常相似。在网格容器中，考虑到只应收集 PET 瓶，却有高达 34%的物品是外来物。在每个 PET 瓶的尺寸流中，透明瓶的比例占主导地位；其范围从 31%到 70%。根据实验结果，除食品和家用化学品包装外，几乎所有 PET 瓶类别都具有标准形状，在这些包装中，26-27%的 PET 瓶具有非标准形状。关于已分类 PET 瓶特征的研究结果，对于有针对性地设计和实施收集、回收技术、二级分离设施、回收计划的经济性以及用于收集材料的反向自动售货机具有基础性作用。
