Monomer Recycling and Repolymerization of Post‐Consumer Polyester Textiles

Author:

Kirstein Mathias12,Lücking Charlotte12,Biermann Lars12,Brepohl Esther2,Salikov Vitalij1,Eichert Carsten1,Paschetag Mandy2ORCID,Scholl Stephan2

Affiliation:

1. RITTEC 8.0 Umwelttechnik GmbH Friedrich-Seele-Straße 12 38122 Braunschweig Germany

2. Technische Universität Braunschweig Institute for Chemical and Thermal Process Engineering Langer Kamp 7 38106 Braunschweig Germany

Abstract

AbstractDue 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.

Publisher

Wiley

Subject

Industrial and Manufacturing Engineering,General Chemical Engineering,General Chemistry

Reference19 articles.

1. Preferred Fiber & Materials Market Report 2022 Textile Exchange Lamesa TX2022.

2. A new textiles economy: redesigning fashion's future Ellen MacArthur Foundation Isle of Wight2017.

3. T.Duhoux E.Maes M.Hirschnitz‐Garbers K.Peeters L.Asscherickx C.Maarten B.Stubbe P.Colignon M.Hinzmann A. Sachdeva Study on the technical regulatory economic and environmental effectiveness of textile fibres recycling final report European Commission Brussels2021.

4. Mechanical and chemical recycling of solid plastic waste

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