Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment
Polyethylene terephthalate (PET) is a widely used polymer whose accumulation in the environment poses a significant pollution challenge. This study explores the degradation of bis(2-hydroxyethyl) terephthalate (BHET) and terephthalic acid (TPA)—two monomers commonly produced during PET hydrolysis an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/30/15/3302 |
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| author | Ángel Navarro-García María Gómez María D. Murcia Elisa Gómez Asunción M. Hidalgo Luis A. Dorado Josefa Bastida |
| author_facet | Ángel Navarro-García María Gómez María D. Murcia Elisa Gómez Asunción M. Hidalgo Luis A. Dorado Josefa Bastida |
| author_sort | Ángel Navarro-García |
| collection | DOAJ |
| description | Polyethylene terephthalate (PET) is a widely used polymer whose accumulation in the environment poses a significant pollution challenge. This study explores the degradation of bis(2-hydroxyethyl) terephthalate (BHET) and terephthalic acid (TPA)—two monomers commonly produced during PET hydrolysis and widely used as intermediates in PET recycling—through Advanced Oxidation Processes (AOPs) employing KrCl (222 nm) and XeBr (283 nm) excimer lamps in the presence of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). The effects of the H<sub>2</sub>O<sub>2</sub>/monomer mass ratio, initial monomer concentrations, and reaction volume on degradation efficiency were systematically evaluated. The results demonstrate that excimer lamp technology, particularly KrCl, holds promising potential for the effective degradation of both BHET and TPA, and thus represents a viable strategy for PET waste treatment. |
| format | Article |
| id | doaj-art-c4f97b14e62b44ab9747ff1b09172f69 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-c4f97b14e62b44ab9747ff1b09172f692025-08-20T04:00:50ZengMDPI AGMolecules1420-30492025-08-013015330210.3390/molecules30153302Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste TreatmentÁngel Navarro-García0María Gómez1María D. Murcia2Elisa Gómez3Asunción M. Hidalgo4Luis A. Dorado5Josefa Bastida6Department of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainDepartment of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainDepartment of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainDepartment of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainDepartment of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainDepartment of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainDepartment of Chemical Engineering, Campus de Espinardo, University of Murcia, 30100 Murcia, SpainPolyethylene terephthalate (PET) is a widely used polymer whose accumulation in the environment poses a significant pollution challenge. This study explores the degradation of bis(2-hydroxyethyl) terephthalate (BHET) and terephthalic acid (TPA)—two monomers commonly produced during PET hydrolysis and widely used as intermediates in PET recycling—through Advanced Oxidation Processes (AOPs) employing KrCl (222 nm) and XeBr (283 nm) excimer lamps in the presence of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). The effects of the H<sub>2</sub>O<sub>2</sub>/monomer mass ratio, initial monomer concentrations, and reaction volume on degradation efficiency were systematically evaluated. The results demonstrate that excimer lamp technology, particularly KrCl, holds promising potential for the effective degradation of both BHET and TPA, and thus represents a viable strategy for PET waste treatment.https://www.mdpi.com/1420-3049/30/15/3302microplasticbis(2-hydroxyethyl) terephthalateterephthalic acidpolyethylene terephthalateadvanced oxidationexcimer radiation |
| spellingShingle | Ángel Navarro-García María Gómez María D. Murcia Elisa Gómez Asunción M. Hidalgo Luis A. Dorado Josefa Bastida Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment Molecules microplastic bis(2-hydroxyethyl) terephthalate terephthalic acid polyethylene terephthalate advanced oxidation excimer radiation |
| title | Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment |
| title_full | Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment |
| title_fullStr | Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment |
| title_full_unstemmed | Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment |
| title_short | Photodegradation of Polyethylene Terephthalate and Bis(2-hydroxyethyl) Terephthalate Using Excimer Lamps and Hydrogen Peroxide: A Strategy for PET–Derived Waste Treatment |
| title_sort | photodegradation of polyethylene terephthalate and bis 2 hydroxyethyl terephthalate using excimer lamps and hydrogen peroxide a strategy for pet derived waste treatment |
| topic | microplastic bis(2-hydroxyethyl) terephthalate terephthalic acid polyethylene terephthalate advanced oxidation excimer radiation |
| url | https://www.mdpi.com/1420-3049/30/15/3302 |
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