正己烷处理 PET 废纤维解聚工艺

IF 3.2 3区化学 Q2 POLYMER SCIENCE

e-Polymers Pub Date : 2024-09-03 DOI:10.1515/epoly-2024-0054

Woo Seok Cho, Joon Hyuk Lee, Da Yun Na, Sang Sun Choi

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引用次数: 0

摘要

全球范围内以聚对苯二甲酸乙二酯（PET）为基础的废纤维的增加带来了持续的环境风险。虽然人们一直在努力将废纤维重新用于制造箱包、服装和建筑材料，但提取纯原料进行回收利用的解聚工艺仍不发达。本研究调查了正己烷处理对从含有对苯二甲酸钠、乙二醇以及聚酯织物减重或废纤维回收过程中产生的杂质的废水中回收的对苯二甲酸（TPA）纯度的影响。对回收的 TPA（rTPA）进行的核磁共振分析表明，其纯度最高可达 99.81%，这表明通过普通正己烷和活性炭处理，可有效去除废纤维中的各种污染物，如粘合剂和表面活性剂。这项研究有助于开发高效、可持续的 PET 废旧纤维回收工艺，突出了正己烷处理在提高 rTPA 纯度方面的潜力。

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Normal-hexane treatment on PET-based waste fiber depolymerization process

The global increase in polyethylene terephthalate (PET)-based waste fiber poses a persistent environmental risk. While efforts have been made to repurpose waste fibers into bags, clothing, and building materials, the depolymerization process to extract pure raw materials for recycling remains underdeveloped. This study investigates the impact of normal hexane treatment on the purity of terephthalic acid (TPA) recovered from wastewater containing sodium terephthalate, ethylene glycol, and impurities generated during polyester fabric weight reduction or waste fiber recycling processes. Nuclear magnetic resonance analysis of the recovered TPA (rTPA) revealed a maximum purity of 99.81%, suggesting the effective removal of diverse contaminants such as adhesives and surfactants present in waste fibers through normal hexane and activated carbon treatments. This research contributes to the development of efficient and sustainable PET waste fiber recycling processes, highlighting the potential of normal hexane treatment in enhancing the purity of rTPA.

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来源期刊

e-Polymers 化学-高分子科学

CiteScore

5.90

自引率

10.80%

发文量

审稿时长

6.4 months

期刊介绍： e-Polymers is a strictly peer-reviewed scientific journal. The aim of e-Polymers is to publish pure and applied polymer-science-related original research articles, reviews, and feature articles. It includes synthetic methodologies, characterization, and processing techniques for polymer materials. Reports on interdisciplinary polymer science and on applications of polymers in all areas are welcome. The present Editors-in-Chief would like to thank the authors, the reviewers, the editorial staff, the advisory board, and the supporting organization that made e-Polymers a successful and sustainable scientific journal of the polymer community. The Editors of e-Polymers feel very much engaged to provide best publishing services at the highest possible level.