| Title |
Synergistic chemo-enzymatic hydrolysis of poly(ethylene terephthalate) from textile waste |
| ID_Doc |
29834 |
| Authors |
Quartinello, F; Vajnhandl, S; Valh, JV; Farmer, TJ; Voncina, B; Lobnik, A; Acero, EH; Pellis, A; Guebitz, GM |
| Title |
Synergistic chemo-enzymatic hydrolysis of poly(ethylene terephthalate) from textile waste |
| Year |
2017 |
| Published |
Microbial Biotechnology, 10.0, 6 |
| DOI |
10.1111/1751-7915.12734 |
| Abstract |
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 (1632cm(-1)) of TA into the deprotonated state (1604 and 1398cm(-1)) was observed and bands at 1728 and 1398cm(-1) were used to assess purity of TA after the chemo-enzymatic PET hydrolysis. The chemical treatment, performed under neutral conditions (T=250 degrees C, P=40bar), 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%). |
| Author Keywords |
|
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000413904000013 |
| WoS Category |
Biotechnology & Applied Microbiology; Microbiology |
| Research Area |
Biotechnology & Applied Microbiology; Microbiology |
| PDF |
https://doi.org/10.1111/1751-7915.12734
|