Bio-upcycling of viscose/polyamide textile blends waste to biopolymers and fibers

• DOI: 10.1016/j.resconrec.2024.107712
• Publication Date: 2024-05-23T03:37:51Z
• Authors: Sophia Mihalyi; Eva Sykacek; Cristina Campano; Natalia Hernández...; Alberto Rodríguez; Andreas Mautner; M.Auxiliadora Prieto; Felice Quartinello; Georg M. Guebitz
• Keywords: Viscose; Textile

Innovative approaches for recycling and upcycling of textile waste are required to sustainably treat the tremendous, discarded amounts. Due their high specificity mild reaction conditions, enzymes offer an environmentally friendly alternative separation blended materials. Glucose was recovered from cellulose (viscose) polyamide blends utilized as carbon source biosynthesis two biodegradable polymers. Polyhydroxybutyrate (PHB) produced by Cupriavidus necator reaching intracellular accumulation 60 % (w/w) 5.2 g/L PHB 20 glucose-rich hydrolysate. Bacterial (BC) Komagataeibacter sucrofermentans exhibiting equal properties BC in standard media confirmed FTIR spectroscopy, SEM, XRD. The fibers were thermo-mechanically reprocessed characterized tensile testing showing comparable virgin material. Thus, a combined bioconversion mechanical reprocessing approach is demonstrated allowing valorization each fraction