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<p>Solvent-based recycling approaches are receiving industrial and academic interest for their ability to produce high-quality plastic resins from a variety of plastic waste sources without breaking the polymer chains. Here we highlight the development of solvent-based technologies, focusing on the underlying principles, techno-economic and life-cycle analyses, and commercialization. The basic steps in solvent-based recycling include plastic size reduction, plastic dissolution, filtration or centrifugation, and optional additional cleaning steps such as adsorption, precipitation and solvent removal. Impurities that build up in the solvent must also be removed. The goal of solvent-based technologies is to produce a high-quality resin without plastic contaminants or other added substances. Disadvantages of these solvent-based technologies are their physicochemical complexity and the difficulty in scaling up to achieve continuous operations with high polymer and solvent yields and throughputs. Chemical engineering is thus critical in bringing solvent-based recycling technologies to market.</p><p></p>

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Solvent-based plastic recycling technologies

  • 期刊论文

  • 发表日期：

    2025年7月22日

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  • Zhuo Xu,
  • Kevin Sanchez-Rivera,
  • Charles Granger,
  • Panzheng Zhou,
  • Aurora del Carmen Munguia-Lopez,
  • Ugochukwu M. Ikegwu,
  • Styliani Avraamidou,
  • Victor M. Zavala,
  • Reid C. Van Lehn,
  • Ezra Bar-Ziv,
  • Steven De Meester,
  • George W. Huber

摘要

Solvent-based recycling approaches are receiving industrial and academic interest for their ability to produce high-quality plastic resins from a variety of plastic waste sources without breaking the polymer chains. Here we highlight the development of solvent-based technologies, focusing on the underlying principles, techno-economic and life-cycle analyses, and commercialization. The basic steps in solvent-based recycling include plastic size reduction, plastic dissolution, filtration or centrifugation, and optional additional cleaning steps such as adsorption, precipitation and solvent removal. Impurities that build up in the solvent must also be removed. The goal of solvent-based technologies is to produce a high-quality resin without plastic contaminants or other added substances. Disadvantages of these solvent-based technologies are their physicochemical complexity and the difficulty in scaling up to achieve continuous operations with high polymer and solvent yields and throughputs. Chemical engineering is thus critical in bringing solvent-based recycling technologies to market.