Subcritical water oxidation of diethyl phthalate using H2O2 and K2S2O8 as oxidizing agents: application of Box-Behnken design

Year 2024, Volume: 10 Issue: 1, 290 - 302, 30.06.2024

Özkan Görmez , Ahmet Gizir

https://doi.org/10.29132/ijpas.1485873

Abstract

Phthalates are known for their harmful effects on human health, including being carcinogenic, toxic, and causing endocrine disruption. Therefore, removing phthalates from aquatic environments is an important issue for researchers. This study aims to compare the efficiency of hydrogen peroxide (HP) and potassium persulfate (PS) oxidants in degrading diethyl phthalate using the oxidant-assisted subcritical water oxidation method. Additionally, the study statistically examines the effect of operational parameters (temperature, oxidant concentration, and treatment time) on diethyl phthalate degradation using the Box-Behnken design. Results indicated that temperature was the primary parameter affecting diethyl phthalate degradation, with both oxidants fitting a quadratic model. The highest total organic carbon (TOC) removal rate (100%) was achieved when potassium persulfate was used as the oxidant in the oxidation experiments. When hydrogen peroxide was used as the oxidant, the maximum TOC removal efficiency was determined to be 87%.

Keywords

Advanced Oxidation Processes, Subcritical water oxidation, Response Surface Methodology, Box-Behnken Design, Endocrine disrupting chemicals

Ethical Statement

All the data supporting this study's findings are available in this manuscript.

Thanks

I would like to thank Prof. Dr. Belgin GÖZMEN for their support. This work was supported by Mersin University Research Fund (Project No: BAP 2015-TP3-1072).

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