Circular economy and sustainable waste management

Abstract

The circular economy (CE) offers a framework for addressing escalating global waste challenges by promoting resource efficiency and minimizing environmental impacts through closed-loop systems. This study examines CE applications in sustainable waste management across regions, utilizing methodological approaches such as Urban Living Labs, Material Flow Analysis (MFA), and Life Cycle Assessment (LCA). Drawing on verified data, global municipal solid waste (MSW) generation reached 2.3 billion tonnes in 2023, projected to increase to 3.8 billion tonnes by 2050 with a ±10% confidence interval. Regional recycling rates vary significantly: Germany achieves 67.7%, while Sub-Saharan Africa manages approximately 4%, South America 4-13.5%, Asia 20-30%, and the USA faces data gaps in high-confidence metrics. Key findings include successful pilot projects like Rwanda's AfriCircular Innovators Programme and Colombia's Esenttia chemical recycling initiative, which produced 300 tonnes of pyrolysis oil and created over 60 jobs. Challenges encompass data availability gaps, regulatory fragmentation, and social equity concerns, particularly in the Global South. Implications highlight the need for integrated policy-finance-innovation strategies to reverse the declining global circularity rate from 9.1% in 2018 to 7.2% in 2023, fostering inclusive transitions aligned with Sustainable Development Goals (SDGs). This analysis contributes to evidence-based CE implementation for waste reduction and resource recovery.