Variability of the declared recycled content by changing allocation methods: A case study on plastic waste recycling

IF 12.4 Q1 ENVIRONMENTAL SCIENCES Resources Environment and Sustainability Pub Date : 2024-03-26 DOI:10.1016/j.resenv.2024.100154
Francesco Caraceni , Elisabetta Abbate , Carlo Brondi , Martino Colonna , Giovanni Dotelli , Andrea Ballarino
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Abstract

The Chain of Custody (CoC) standard tracks the recycled content (RC) of products, in most cases using the Mass Balance model. This model freely allows the selection of allocation methods and timeframes for the RC evaluation. Our work opens a discussion on the potential effects of this freedom in the RC evaluation. Firstly, we defined the general model representing the viable allocation methods and timeframe, and secondly, we applied the model to a case study. The mass balance model simplifies the monitoring of RC and encourages companies to use recycled materials. However, we outline the need for actions on stricter RC calculation and reporting, for instance, by reducing the timeframe of mass balance calculation or promoting the controlled blending model, which guarantees the physical presence of RC in the product. The results provide a basis for policymakers to set requirements for RC evaluation.

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通过改变分配方法实现申报回收含量的可变性:塑料废物回收案例研究
监管链(CoC)标准跟踪产品的回收成分(RC),在大多数情况下使用质量平衡模型。该模型允许自由选择分配方法和时间范围进行 RC 评估。我们的工作开启了关于这种自由度在 RC 评估中的潜在影响的讨论。首先,我们定义了代表可行分配方法和时间框架的一般模型;其次,我们将该模型应用于案例研究。质量平衡模型简化了对 RC 的监测,并鼓励公司使用回收材料。不过,我们概述了在更严格的 RC 计算和报告方面采取行动的必要性,例如,缩短质量平衡计算的时间框架或推广受控混合模式,以保证产品中实际存在 RC。研究结果为决策者制定 RC 评估要求提供了依据。
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来源期刊
Resources Environment and Sustainability
Resources Environment and Sustainability Environmental Science-Environmental Science (miscellaneous)
CiteScore
15.10
自引率
0.00%
发文量
41
审稿时长
33 days
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