https://orcid.org/0000-0003-1714-2358
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ABSTRACT
Degradation of antibiotic sulphamethoxazole (SMX) was studied by applying modified photo-Fenton reactions (MPF) with the novel choice of using sodium tripolyphosphate (STP) and sodium hexametaphosphate (SHP) complexing agents. STP and SHP have a strong ability as complexing agents because they can sequester and complex with different ions. Process optimisation was performed using Doehlert design at pH = 6. This study presented higher performance for MPF using STP and SHP complexing agents than conventional photo-Fenton and H2O2 + UV process. The best yields were associated with the formation of a smaller number of intermediates with high degradation efficiency and low oxidative stress, environment-friendly and promising processes.
Acknowledgments
The authors gratefully acknowledge financial support for this work from the Brazilian research funding agency CAPES (Federal Agency for the Support and Improvement of Higher Education).
Disclosure statement
No potential conflict of interest was reported by the author(s).
Supplementary Information
Supplemental data for this article can be accessed online at https://doi.org/10.1080/00207233.2024.2322896