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Kinetic Aspects of Ethylene Glycol Degradation Using UV-C Activated Hydrogen Peroxide (H2O2/UV-C) Full article

Journal Molecules
ISSN: 1420-3049
Output data Year: 2025, Volume: 30, Number: 1, Article number : 49, Pages count : 16 DOI: 10.3390/molecules30010049
Tags environmental protection; wastewater treatment; ethylene glycol (EG); advanced oxidation processes (AOPs); photodegradation; H2O2/UV-C
Authors Fazliev Timur 1,2 , Lyulyukin Mikhail 1,2 , Kozlov Denis 1,2 , Selishchev Dmitry 1,2
Affiliations
1 Research and Educational Center “Institute of Chemical Technologies”, Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia
2 Competence Center of the National Technological Initiative “Hydrogen as the Basis of a Low-Carbon Economy”, Lavrentieva Ave. 7, Novosibirsk 630090, Russia

Funding (1)

1 Ministry of Science and Higher Education of the Russian Federation 075-15-2024-646

Abstract: Ethylene glycol (EG) is a contaminant in the wastewater of airports because it is commonly used in aircraft deicing fluids during the cold season in northern regions. Ethylene glycol by itself has relatively low toxicity to mammals and aquatic organisms, but it can lead to a substantial increase in chemical and biological oxygen demands. The contamination of water with EG facilitates the rapid growth of microbial biofilms, which decreases the concentration of dissolved oxygen in water and negatively affects overall biodiversity. The development of a simple method to decompose EG with high efficiency and low operating costs is important. This study revealed that ethylene glycol can be completely oxidized using UV-C activated hydrogen peroxide (H2O2/UV-C) at a high rate (up to 56 mg L–1 h–1) at an optimum EG:H2O2 molar ratio of 1:10–1:15. Air purging the reaction mixture at 1000 cm3 min–1 increases the EG mineralization rate up to two times because the simultaneous action of UV-activated H2O2 and O2 (H2O2 + O2/UV-C) leads to a synergistic effect, especially at low EG:H2O2 ratios. The kinetics and mechanism of EG degradation are discussed on the basis of the concentration profiles of ethylene glycol and intermediate products.
Cite: Fazliev T. , Lyulyukin M. , Kozlov D. , Selishchev D.
Kinetic Aspects of Ethylene Glycol Degradation Using UV-C Activated Hydrogen Peroxide (H2O2/UV-C)
Molecules. 2025. V.30. N1. 49 :1-16. DOI: 10.3390/molecules30010049 WOS Scopus OpenAlex
Dates:
Submitted: Nov 15, 2024
Accepted: Dec 25, 2024
Published online: Dec 26, 2024
Published print: Jan 1, 2025
Identifiers:
Web of science: WOS:001395123100001
Scopus: 2-s2.0-85214500783
OpenAlex: W4405810718
Citing: Пока нет цитирований
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