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Plastic Waste Recycling is Insufficient to Mitigate Plastic Pollution: the Need for a Paradigm Shift
Summary
This review argues that plastic waste recycling is fundamentally insufficient to address global plastic pollution and calls for a paradigm shift away from end-of-pipe solutions toward upstream production reduction. The authors examine the structural limitations of current recycling strategies and the economic and policy barriers that prevent meaningful plastic pollution mitigation.
Plastic pollution appears to be approaching saturation, with plastics being detected ubiquitously across nearly all terrestrial and aquatic ecosystems. Consequently, the world is witnessing a proliferation of proposed solutions to manage plastic waste, addressing a material that has transformed from a boon into a bane. This review seeks to elucidate the underlying causes and limitations of current strategies that fail to adequately address the global plastic waste crisis. Furthermore, it aims to provide a broader perspective on the issue and highlight the urgent need for a paradigm shift towards reducing plastic use in everyday life. Plastics can be a massive economic potential resource, but a major percentage of plastics are dumped in landfills or get dispersed into the environment. The application of the 3Rs ‘reduce, reuse, and recycle’, was found to be getting highly overlooked, with the focus of large-scale enterprises being solely on ‘recycling’ instead of ‘reduce, and reuse’. Consumer purchasing behavior plays a crucial role in reducing plastic waste generation. This review identified several shortcomings in current recycling practices, along with a substantial scope for improvement in their efficiency and implementation. Recent studies indicate that while mechanical recycling remains the primary waste management approach, its effectiveness is reduced due to contamination, downcycling, and economic inefficiencies. The growing interest in bioplastics as an alternative to fossil-based plastics is promising, but it presents challenges in large-scale production, degradation, and proper waste disposal. Additionally, the use of recycled plastics in textiles and fashion, once considered a sustainable solution, has raised concerns due to the release of microplastics, questioning its circularity. Currently, the techniques towards plastic waste mitigation seem to be approaching a ‘recycling economy’ instead of a ‘circular economy’. Recycling economy follows an end-of-pipe solution, where products are recycled after use, unlike the circular economy approach, which calls for a complete system redesign, i.e., reduce, reuse, and re-thinking from the start. There is a need to re-think and re-evaluate the shortcomings of solely depending upon recycling. The inefficacy of a free-size-fit approach in plastics management through recycling was identified. Future efforts should be re-engineered with 3Rs approach, while optimizing recycling efficiency, scaling up bioplastic applications, and implementing carbon circularity solutions to achieve long-term environmental sustainability. There is an urgent need to revitalize and rethink existing mitigation solutions, which urgently calls for a paradigm shift.
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