Study on kinetic characteristics and influencing factors of diethyl phthalate degraded by ferrous ion-activated persulfate

Qinqin Zhang; Qinghua Zhu; Fenggui Chen; Xiaohui Zhao; Shuqin Bai; Youqing Yu; Qiyao Sun

doi:10.1117/12.2652343

14 November 2022 Study on kinetic characteristics and influencing factors of diethyl phthalate degraded by ferrous ion-activated persulfate

Qinqin Zhang, Qinghua Zhu, Fenggui Chen, Xiaohui Zhao, Shuqin Bai, Youqing Yu, Qiyao Sun

Author Affiliations +

Proceedings Volume 12299, International Conference on Sustainable Technology and Management (ICSTM 2022); 122990U (2022) https://doi.org/10.1117/12.2652343
Event: International Conference on Sustainable Technology and Management (ICSTM 2022), 2022, Macao, China

Abstract

Diethyl phthalate (DEP) is a class of phthalates. As a widely used plasticizer, DEP has been extensively detected in different environmental systems, which would affect the reproduction of living organisms. In this study, both kinetic characteristics and influencing factors of DEP degradation by Fe²⁺/S₂O₈²⁻ system were studied. The results showed that the initial pH value, S₂O₈²⁻, Fe²⁺, DEP had effects on degradation efficiency of DEP. When the pH value was 3.0, the concentration of DEP was 50 μmol/L, the concentration of Fe²⁺ was 100 μmol/L and the concentration of S₂O₈²⁻ was 500 μmol/L, the degradation efficiency of DEP was 98%. Increasing the concentrations of Fe²⁺ and S₂O₈²⁻ were beneficial to the removal of target chemicals. The Behnajady-Modirshahla-Ghanbery (BMG) kinetic model were fit to describe the Fe²⁺/S₂O₈²⁻ method for low-concentration DEP removal. The 1/m in BMG kinetic model had a good correlation with the initial concentrations of Fe²⁺, DEP, S₂O₈²⁻ and pH. As far as we know, this was the first report of BMG kinetic model for ferrous ion-activated persulfate degradation of Phthalates.

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Qinqin Zhang, Qinghua Zhu, Fenggui Chen, Xiaohui Zhao, Shuqin Bai, Youqing Yu, and Qiyao Sun "Study on kinetic characteristics and influencing factors of diethyl phthalate degraded by ferrous ion-activated persulfate", Proc. SPIE 12299, International Conference on Sustainable Technology and Management (ICSTM 2022), 122990U (14 November 2022); https://doi.org/10.1117/12.2652343

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