Monomer Recycling and Repolymerization of Post-Consumer Polyester Textiles

被引：9

作者：

Kirstein, Mathias ^{[1
,2
]}

Luecking, Charlotte ^{[1
,2
]}

Biermann, Lars ^{[1
,2
]}

Brepohl, Esther ^{[2
]}

Salikov, Vitalij ^{[1
]}

Eichert, Carsten ^{[1
]}

Paschetag, Mandy ^{[2
]}

Scholl, Stephan ^{[2
]}

机构：

[1] RITTEC 8 0 Umwelttech GmbH, Friedrich Seele Str 12, D-38122 Braunschweig, Germany

[2] Tech Univ Carolo Wilhelmina Braunschweig, Inst Chem & Thermal Proc Engn, Langer Kamp 7, D-38106 Braunschweig, Germany

来源：

CHEMIE INGENIEUR TECHNIK | 2023年 / 95卷 / 08期

关键词：

Circular economy; Depolymerization; Monomer recycling; PET circularity; Polyester;

D O I：

10.1002/cite.202200197

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Due to the presence of dyes and additives, textile recycling is challenging, therefore the majority of textile waste is downcycled to low-value products, incinerated or landfilled. In this study, a continuous depolymerization of post-consumer polyester textiles was conducted by alkaline hydrolysis. The degree of depolymerization was assessed and found to be 94 %. After recovering and analyzing the terephthalic acid and ethylene glycol the monomers were successfully polymerized to regain a food grade quality recycled polyethylene terephthalate. The presented recycling approach allows a closed-loop recycling of textiles.

引用

页码：1290 / 1296

页数：7

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