Improving the Sustainability of Catalytic Glycolysis of Complex PET Waste through Bio-Solvolysis
dc.contributor.author | Amundarain, Izotz | |
dc.contributor.author | López Montenegro, Sheila | |
dc.contributor.author | Fulgencio Medrano, Laura | |
dc.contributor.author | Leivar, Jon | |
dc.contributor.author | Iruskieta, Ana | |
dc.contributor.author | Asueta, Asier | |
dc.contributor.author | Miguel Fernández, Rafael | |
dc.contributor.author | Arnaiz, Sixto | |
dc.contributor.author | Pereda Ayo, Beñat | |
dc.date.accessioned | 2024-01-30T18:35:47Z | |
dc.date.available | 2024-01-30T18:35:47Z | |
dc.date.issued | 2024-01-02 | |
dc.identifier.citation | Polymers 16(1) : (2024) // Article ID 142 | es_ES |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | http://hdl.handle.net/10810/64483 | |
dc.description.abstract | This work addresses a novel bio-solvolysis process for the treatment of complex poly(ethylene terephthalate) (PET) waste using a biobased monoethylene glycol (BioMEG) as a depolymerization agent in order to achieve a more sustainable chemical recycling process. Five difficult-to-recycle PET waste streams, including multilayer trays, coloured bottles and postconsumer textiles, were selected for the study. After characterization and conditioning of the samples, an evaluation of the proposed bio-solvolysis process was carried out by monitoring the reaction over time to determine the degree of PET conversion (91.3–97.1%) and bis(2-hydroxyethyl) terephthalate (BHET) monomer yield (71.5–76.3%). A monomer purification process, using activated carbon (AC), was also developed to remove the colour and to reduce the metal content of the solid. By applying this purification strategy, the whiteness (L*) of the BHET greatly increased from around 60 to over 95 (L* = 100 for pure white) and the Zn content was significantly reduced from around 200 to 2 mg/kg. The chemical structure of the purified monomers was analyzed via infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC), and the composition of the samples was measured by proton nuclear magnetic resonance (1H-NMR), proving a high purity of the monomers with a BHET content up to 99.5% in mol. | es_ES |
dc.description.sponsorship | This research was funded by the Department of Economic Development and Infrastructures of the Basque Government through its ELKARTEK 2023 Program (NEOPLAST 2 Project, Reference KK-2023/00060), by the Spanish Ministry of Science and Innovation through its R&D Program “Líneas Estratégicas” (SusChemPol Project, Exp. PLEC2021-007793) and also by CDTI (Centro para el Desarrollo Tecnológico Industrial), within the framework of grants for Technological Centers of Excellence “Cervera” (OSIRIS Project, CER-20211009). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PLEC2021-007793 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/es/ | |
dc.subject | poly(ethylene terephthalate) waste | es_ES |
dc.subject | chemical recycling | es_ES |
dc.subject | glycolysis | es_ES |
dc.subject | biobased | es_ES |
dc.subject | monomer | es_ES |
dc.subject | purification | es_ES |
dc.title | Improving the Sustainability of Catalytic Glycolysis of Complex PET Waste through Bio-Solvolysis | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2024-01-10T14:50:31Z | |
dc.rights.holder | © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/2073-4360/16/1/142 | es_ES |
dc.identifier.doi | 10.3390/polym16010142 | |
dc.departamentoes | Ingeniería química | |
dc.departamentoeu | Ingeniaritza kimikoa |
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Except where otherwise noted, this item's license is described as © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/).