Institute of Finance and Technology, University College of London, London WC1E 6BT, United Kingdom.
Electronic Engineering and Computer Science, Queen Mary University of London, London E1 4NS, United Kingdom.
Waste Manag. 2021 Feb 15;121:42-51. doi: 10.1016/j.wasman.2020.11.045. Epub 2020 Dec 18.
By the end of 2015, approximately 6300 million tons (Mt) of plastic waste had been generated globally, but less than 10% of plastics was recycled. Since different types of plastics have various degrees of recyclability, consumer information about plastic product recyclability is paramount in order to increase the levels of plastic recycled. Against this context, the objective of this work is to define a plastic credit system to increase the amount of recyclable plastics. The plastic credit system assigns credit information to each plastic product and its corresponding company based on the percentage recyclability value of the plastic type and its composition. The methodology proposed is based on a unified and transparent credit system established by a double-chain system, which comprises a public blockchain CreditChain and a consortium blockchain M-InfoChain. The results show through the overall system performance analysis that the designed plastic credit system is capable of promoting a demand shift towards plastic products with higher plastic recyclability and achieving a lightweight operation for resource requirements and system maintenance.
截至 2015 年底，全球已产生约 63 亿吨塑料废物，但回收利用率不到 10%。由于不同类型的塑料具有不同程度的可回收性，因此消费者了解塑料产品的可回收性信息对于提高塑料回收利用率至关重要。有鉴于此，本工作的目的是定义一个塑料信用系统，以增加可回收塑料的数量。塑料信用系统根据塑料类型及其组成的可回收性百分比值，为每个塑料产品及其对应的公司分配信用信息。所提出的方法基于由双链系统建立的统一透明的信用系统，双链系统包括公有链 CreditChain 和联盟链 M-InfoChain。通过对整个系统性能的分析表明，所设计的塑料信用系统能够促进对具有更高塑料可回收性的塑料产品的需求转移，并实现资源需求和系统维护的轻量化操作。
