Eco-innovative approaches for recycling non-polyester/cotton blended textiles

Chandra Manivannan Arun , Logeshwaran Panneerselvan , Gunasekhar Nachimuthu , Meredith Conaty , Thava Palanisami
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Abstract

Blended textile waste constitutes a substantial portion of the global textile waste stream, making recycling essential for minimizing the industry’s environmental impact. Although polyester/cotton recycling is well developed, many other blended textiles are routinely landfilled owing to a lack of effective recycling technologies. This review critically assesses existing strategies for recycling non-polyester/cotton blends, highlighting the key challenges and opportunities for innovation. In the sorting stage, integrating artificial intelligence (AI) and machine learning (ML) enhances efficiency and accuracy. Advanced methods, such as green chemistry, mechanical recycling, and enzymatic treatments, have proven effective for most blended textiles; however, fibers, such as polypropylene, still lack defined closed-loop recycling routes. Life cycle assessment (LCA) indicates that recycling textile waste can reduce environmental impacts by 60%, but the absence of comprehensive LCA studies on diverse recycling approaches limits reliability. Furthermore, while textile recycling is sustainable, concerns regarding the emission of hazardous additives and organic pollutants pose ecological and health risks. Therefore, advanced recycling technologies for non-polyester/cotton blends are crucial for achieving sustainability. Future research should focus on developing efficient recycling methods for complex blends, addressing the environmental impact of hazardous substances, and standardizing LCA methodologies to ensure economic and environmental viability.

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生态创新方法回收非聚酯/棉混纺纺织品
混合纺织废物构成了全球纺织废物流的很大一部分,使回收对于最大限度地减少该行业对环境的影响至关重要。虽然聚酯/棉回收利用很发达,但由于缺乏有效的回收技术,许多其他混纺纺织品通常被填埋。这篇综述批判性地评估了现有的非聚酯/棉混纺回收战略,强调了创新的主要挑战和机遇。在分拣阶段,人工智能(AI)和机器学习(ML)的结合提高了效率和准确性。先进的方法,如绿色化学、机械回收和酶处理,已被证明对大多数混纺纺织品有效;然而,纤维,如聚丙烯,仍然缺乏明确的闭环回收路线。生命周期评估(LCA)表明,回收纺织废料可减少60%的环境影响,但缺乏对不同回收方法的全面LCA研究限制了可靠性。此外,虽然纺织品回收是可持续的,但对有害添加剂和有机污染物排放的担忧构成了生态和健康风险。因此,非聚酯/棉混纺的先进回收技术对于实现可持续性至关重要。未来的研究应侧重于开发复杂混合物的有效回收方法,解决有害物质对环境的影响,并使生命周期分析方法标准化,以确保经济和环境可行性。
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