Hazardous properties of plasticisers that may hinder the recycling of plastics

IF 1.2 Q4 ENGINEERING, ENVIRONMENTAL
P. Hennebert
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引用次数: 3

Abstract

Plasticisers transform rigid polymers, especially PVC, into flexible and useful material, typically at 10-35% concentration. Four phthalate plasticizers are now banned in the EU (maximum concentration in products of 0.1%). Are other plasticisers, used in concentrations that make a product waste, unsafe? The hazardous properties of plasticisers used in the EU (Plastic Additives Initiative list) were collected from the ECHA registration site. Eight plasticizers (=12% of 69) are either skin sensitizers (2 substances) and under evaluation by ECHA (7 substances), with a potential ban at the end of the evaluation for persistence, bioaccumulation and toxicity (PBT), endocrine disruption (ED) and as substances of very high concern (SVHC). Seventeen (=25% of 69) are used at a concentration that makes the plastic hazardous when it becomes waste. The sorting and management options of these additivated plastics are discussed. The recycling of these hazardous wastes is not prohibited. In the short-term recycling phase in modern industrial plants, there is a low emission of these additives, which is controlled by occupational safety and environmental regulations. On the other hand, the long-term low-quality management such as littering (with weathering and fragmentation) and landfilling (with the emission of degradable products in case of phthalates) scatter these substances. The plastics containing “legacy” banned additives must be phased out. But the plastics with compounds at hazardous concentration should be recycled in controlled recycling loop. They should be managed by a risk approach, like the products they were and the new products that they will become.
可能阻碍塑料回收的增塑剂的危险特性
增塑剂将刚性聚合物,特别是PVC,转化为柔性和有用的材料,通常浓度为10-35%。欧盟现在禁止使用四种邻苯二甲酸酯增塑剂(产品中的最高浓度为0.1%)。其他增塑剂的浓度会使产品浪费,是否不安全?欧盟使用的增塑剂的危险特性(塑料添加剂倡议清单)是从欧洲化学品管理局注册网站收集的。八种增塑剂(占69种物质的12%)是皮肤增敏剂(2种物质),正在接受欧洲化学品管理局的评估(7种物质)。在评估结束时,可能会禁止使用持久性、生物累积性和毒性(PBT)、内分泌紊乱(ED)和高度关注物质(SVHC)。17个(占69个的25%)的使用浓度使塑料成为废物时具有危险性。讨论了这些添加塑料的分类和管理选择。这些危险废物的回收利用是不被禁止的。在现代工业工厂的短期回收阶段,这些添加剂的排放量很低,这受到职业安全和环境法规的控制。另一方面,长期的低质量管理,如乱扔垃圾(风化和碎片化)和填埋(在邻苯二甲酸酯的情况下排放可降解产品),会分散这些物质。含有“遗留”禁用添加剂的塑料必须逐步淘汰。但含有危险浓度化合物的塑料应在受控的回收循环中回收。它们应该通过风险方法进行管理,就像它们曾经的产品和将要成为的新产品一样。
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来源期刊
Detritus
Detritus ENGINEERING, ENVIRONMENTAL-
CiteScore
3.30
自引率
23.50%
发文量
45
审稿时长
15 weeks
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