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Degradation of hydroxychloroquine in aqueous solutions under electron beam treatment Cover

Degradation of hydroxychloroquine in aqueous solutions under electron beam treatment

Open Access
|Jun 2024

Abstract

Hydroxychloroquine (HCQ), a 4-amino quinoline derivative, has antimalarial and anti-inflammatory activity and was most recently proposed in the treatment of SARS-COVID-19. Its pharmacokinetics and toxic side effects necessitate the monitoring of its presence in the environment and its removal from wastewater. In this study, HCQ was removed from an aqueous solution with a removal efficiency of between 80% and 90% under electron beam (EB) irradiation. The degradation of HCQ was propagated by reactions involving both the hydroxyl radical and aqueous electron. The degradation was observed to follow a pseudo-first-order kinetic reaction. The applied radiation dose, pH, and initial HCQ concentration were influential in the degradation efficiency under EB irradiation. Acidic and alkaline pH favored the removal of HCQ under EB irradiation. Even though the initial HCQ was successfully degraded, it was not completely mineralized. The TOC and chemical oxygen demand (COD) remained at a relatively stable level following EB irradiation of the aqueous solutions. This is attributed to the formation of other organic compounds that were not degraded under the investigated experimental conditions.

DOI: https://doi.org/10.2478/nuka-2024-0009 | Journal eISSN: 1508-5791 | Journal ISSN: 0029-5922
Language: English
Page range: 65 - 74
Submitted on: Oct 5, 2023
Accepted on: Feb 16, 2024
Published on: Jun 25, 2024
Published by: Institute of Nuclear Chemistry and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2024 Stephen Kabasa, Yongxia Sun, Sylwester Bułka, Andrzej G. Chmielewski, published by Institute of Nuclear Chemistry and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.