Advanced modeling of plastic recycling supply chain networks for emission reduction and sustainability

Abstract

Plastic products are rising in demand due to their beneficial properties, increasing plastic waste emissions. Historically, China imported plastic waste; however, stringent bans after 2018 have shifted the burden to producing countries like Korea. International agreements such as the United Nations Framework Convention on Climate Change, Kyoto Protocol, Paris Agreement, and Intergovernmental Panel on Climate Change guidelines emphasize greenhouse gas emission reduction. By 2030, Korea aims to cut emissions by over 35% and achieve a plastic waste recycling rate of 70%. Limited land area necessitates sustainable waste management beyond landfills and incineration. Effective management can reduce environmental impact and generate carbon credits. Thus, this study constructs an optimal supply chain network for recycling plastic waste in Korea using a multi-period model based on the Organization for Economic Co-operation and Development statistics. The model integrates collection, sorting, transportation, and recycling, focusing on material recycling, chemical recycling, and energy recovery. It addresses Korea's waste management challenges while targeting national emission reduction and recycling rate goals. Expected outcomes include optimal recycling strategies, policy recommendations, and industry practices to implement this supply chain network, contributing to Korea's environmental goals and global efforts to mitigate plastic waste impacts. The proposed model provides a scalable, adaptable framework for sustainable waste management globally.