Synergistic chemo-enzymatic hydrolysis of poly (ethylene terephthalate) from textile waste

Felice Quartinello (Avtor), Simona Vajnhandl (Avtor), Julija Volmajer Valh (Avtor), Thomas Farmer (Avtor), Bojana Vončina (Avtor), Aleksandra Lobnik (Avtor), Enrique Herrero Acero (Avtor), Alessandro Pellis (Avtor), Georg M. Gübitz (Avtor)

Povzetek

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%).

Ključne besede

tekstilni odpadki;recikliranje odpadkov;textile waste;waste recycling;

Podatki

Jezik:	Angleški jezik
Leto izida:	2017
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	628.4.042:677
COBISS:	20615958
ISSN:	1751-7915
Št. ogledov:	1107
Št. prenosov:	309
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	tekstilni odpadki;recikliranje odpadkov;
URN:	URN:SI:UM:
Vrsta dela (COBISS):	Znanstveno delo
Strani:	str. 1376-1383
Letnik:	ǂVol. ǂ10
Zvezek:	ǂiss. ǂ6
Čas izdaje:	Nov. 2017
DOI:	10.1111/1751-7915.12734
ID:	10879508