Kählig, P., Ipsmiller, W., & Bartl, A. (2022). Alkaline and enzymatic hydrolysis of different PET / cotton blends from textile waste. In SUM 2022 sixth symposium on circular economy and urban mining 10th anniversary. SUM2022 “Sixth Symposium on Circular Economy and Urban Mining,” Capri, Italy.
Concerning the growing amount of textile waste generated every year, there is a need to examine existing and to develop new technologies for the recycling of this waste. As there is still a lack of those technologies, especially for blended textiles, it is imperative to investigate procedures that will provide an easy separation of those blends. In this study, a straightforward approach for the separation of polyester / cotton blends using alkaline hydrolysis and enzymatic hydrolysis, with an alkaline pre-treatment step using sodium hydroxide solutions, was investigated. Operating parameters for the recovery of the polyester or the cotton fabric from knitted textiles as well as woven pre- and post-consumer textiles were defined and boundaries for suitable operation could be provided.
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Project title:
Christian Doppler Labor für Design und Bewertung einer effizienten, recyclingbasierten Kreislaufwirtschaft: CD-Labor für Recyclingbasierte Kreislaufwirtschaft (CDG Christian Doppler Forschungsgesellschaft)
