20.500.12556/DKUM-68999 Synergistic chemo-enzymatic hydrolysis of poly (ethylene terephthalate) from textile waste Due to the rising global environment protection awareness, recycling strategies that comply with the circular economy principles are needed. Polyesters are among the most used materials in the textile industry; therefore, achieving a complete poly(ethylene terephthalate) (PET) hydrolysis in an environmentally friendly way is a current challenge. In this work, a chemo-enzymatic treatment was developed to recover the PET building blocks, namely terephthalic acid (TA) and ethylene glycol. To monitor the monomer and oligomer content in solid samples, a Fourier-transformed Raman method was successfully developed. A shift of the free carboxylic groups (1632 cm$^{−1}$) of TA into the deprotonated state (1604 and 1398 cm$^{−1}$) was observed and bands at 1728 and 1398 cm$^{−1}$ were used to assess purity of TA after the chemo-enzymatic PET hydrolysis. The chemical treatment, performed under neutral conditions (T = 250 °C, P = 40 bar), led to conversion of PET into 85% TA and small oligomers. The latter were hydrolysed in a second step using the Humicola insolens cutinase (HiC) yielding 97% pure TA, therefore comparable with the commercial synthesis-grade TA (98%). textile waste waste recycling tekstilni odpadki recikliranje odpadkov true false true Angleški jezik Slovenski jezik Znanstveno delo 2017-11-16 10:58:29 2017-11-16 10:59:35 2022-08-01 16:46:20 2019-07-11 17:17:39 2017 0 0 str. 1-8 št. 6 Letn. 10 First published: 2 June 2017 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1751-7915 628.4.042:677 14597398 20615958 10.1111/1751-7915.12734 1751-7915 URN:SI:UM:DK:LTNBBBKP Microbial_Biotechnology_2017_Quartinello_et_al._Synergistic_chemo-enzymatic_hydrolysis_of_poly(ethylene_terephthalate)_from_textile_wast.pdf Microbial_Biotechnology_2017_Quartinello_et_al._Synergistic_chemo-enzymatic_hydrolysis_of_poly(ethylene_terephthalate)_from_textile_wast.pdf 1 AC1997C9EF15A7CAEFD0B67177A2E407 858de711b40178bcf7f43fd21dac43018b61faad58a951048ec43553059bb9f1 805b3101-7c0f-11eb-bb7a-00155d0001ca 20.500.12556/dkum/09d9e080-1cfe-49d9-bec3-a81815552b8e https://dk.um.si/Dokument.php?lang=slv&id=120341 http://doi.wiley.com/10.1111/1751-7915.12734 1 https://dk.um.si/Dokument.php?lang=slv&id=120340 Fakulteta za strojništvo 0 0 0