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Evaluating Sustainable Plastic Bag Recycling Using Multi-Criteria Decision Making as a Real-Life Study in Thailand

Author

Listed:
  • Virin Kittithammavong

    (Faculty of Engineering, Naresuan University, Phitsanulok-Nakornsawan Road, Phitsanulok 65000, Thailand)

  • Sivanappan Kumar

    (Faculty of Engineering, Naresuan University, Phitsanulok-Nakornsawan Road, Phitsanulok 65000, Thailand)

  • Ampira Charoensaeng

    (The Petroleum and Petrochemical College, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand)

  • Sutha Khaodhiar

    (Department of Environmental Engineering, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand
    Center of Excellence on Hazardous Substance Management, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand)

Abstract

Thailand generated 27.2 million tons of municipal solid waste in 2024, of which 12% was plastic waste, predominantly single-use plastics. The mismanagement of plastic waste can lead to significant long-term environmental issues, including the release of toxic chemicals through open burning and air pollution, posing risks to human health. Effective and efficient plastic waste collection and recycling are therefore essential to address the reduction and management of plastic waste, as well as to support a low-carbon energy transition. This study assessed three community-driven initiatives by conducting a comparative sustainability assessment of plastic bag recycling under real-life conditions in Thailand using a multi-criteria decision-making framework. The results of the assessment in three municipalities showed that the actual collection rates in all initiatives remained extremely low (0.0014–0.1555%). The highest rankings were observed with recycling initiatives driven by superior collection rates and favorable economic returns. The hindrances to promoting sustainability are found to be due to policy inconsistency, ineffective leadership, and behavioral barriers. The practical collection rates should increase to at least 25% to be more sustainable in terms of economic, social, and environmental aspects compared to those without the recycling initiative. These findings, thus, provide specific targets for improving plastic waste separation and management strategies in all regions facing similar challenges.

Suggested Citation

  • Virin Kittithammavong & Sivanappan Kumar & Ampira Charoensaeng & Sutha Khaodhiar, 2025. "Evaluating Sustainable Plastic Bag Recycling Using Multi-Criteria Decision Making as a Real-Life Study in Thailand," Sustainability, MDPI, vol. 17(21), pages 1-25, October.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:21:p:9366-:d:1776706
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    References listed on IDEAS

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