Kinetic study of diclofenac degradation in aqueous solution by dielectric barrier discharge plasma

被引：0

作者：

Jiang, Tao ^{[1
]}

Yang, Yinhai ^{[1
,2
]}

Wang, Huan ^{[1
]}

Lei, Lecheng ^{[1
,2
]}

Yang, Bin ^{[1
,2
]}

机构：

[1] College of Chemical and Biological Engineering, Zhejiang University, Hangzhou

[2] Institute of Zhejiang University-Quzhou, Quzhou

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2024年 / 38卷 / 06期

关键词：

diclofenac; dielectric barrier discharge; mass transfer-reaction model; reaction kinetics;

D O I：

10.3969/j.issn.1003-9015.2024.06.015

中图分类号：

学科分类号：

摘要：

Pharmaceuticals and personal care products (PPCPs) are frequently detected in water in recent years. In this paper, diclofenac (DCF) was selected as the target contaminant and the macro-kinetics of DCF degradation was investigated based on a plate type circulating dielectric barrier discharge (DBD) reactor. The macroscopic kinetics of DCF degradation was investigated based on the degradation experiments in a flat-plate circulating DBD reactor. The results show that the degradation of DCF in a flat plate circulating DBD reactor is consistent with primary kinetics, and the degradation rate constant is 0.175 min-1. The macro kinetic reaction constants are affected by input voltage, electrode spacing and initial concentration, and K=8.533 mol∙min-1∙mm3.25∙W-0.75. The conversion rate of DCF in a single flow through the discharge region is affected by input power, electrode spacing and solution flow rate, and the intrinsic kinetic reaction of DCF in a DBD system is a secondary reaction. © 2024 Zhejiang University. All rights reserved.

引用

页码：971 / 978

页数：7

共 22 条

[1] YE B, WU Q Y, WANG W L, Et al., PPCP degradation by ammonia/chlorine: Efficiency, radical species, and byproducts formation, Water Research, 235, (2023)
[2] METIN S, CIFCI D I., Chemical industry wastewater treatment by coagulation combined with Fenton and photo-Fenton processes, Journal of Chemical Technology & Biotechnology, 98, 5, pp. 1158-1165, (2023)
[3] CONDE J J, ABELLEIRA S, ESTEVEZ S, Et al., Improving the sustainability of heterogeneous Fenton-based methods for micropollutant abatement by electrochemical coupling, Journal of Environmental Management, 332, (2023)
[4] AL-HAMADANI Y A J, LEE G, KIM S, Et al., Sonocatalytic degradation of carbamazepine and diclofenac in the presence of graphene oxides in aqueous solution, Chemosphere, 205, pp. 719-727, (2018)
[5] NIE E, YANG M, WANG D, Et al., Degradation of diclofenac by ultrasonic irradiation: Kinetic studies and degradation pathways, Chemosphere, 113, pp. 165-170, (2014)
[6] LIU W, LI Y Y, LIU F Y, Et al., WITHDRAWN: Visible-light-driven photocatalytic degradation of diclofenac by carbon quantum dots modified porous g-C3N4: Mechanisms, degradation pathway and DFT calculation, Water Research, 150, pp. 431-441, (2019)
[7] LIU F Y, LIANG J L, CHEN L, Et al., Photocatalytic removal of diclofenac by Ti doped BiOI microspheres under visible light irradiation: Kinetics, mechanism, and pathways, Journal of Molecular Liquids, 275, pp. 807-814, (2019)
[8] LI S, WANG Z R, ZHANG X L, Et al., Preparation of magnetic nanosphere/nanorod/nanosheet-like Fe3O4/Bi2S3/BiOBr with enhanced (001) and (110) facets to photodegrade diclofenac and ibuprofen under visible LED light irradiation, Chemical Engineering Journal, 378, (2019)
[9] CUBAS A L V, DUTRA A R D A, ALVES T C, Et al., Evaluation of antimicrobial sensitivity to tetracycline exposed to non-thermal plasma, Química Nova, 46, 3, pp. 236-240, (2023)
[10] MAGUREANU M, PIROI D, MANDACHE N B, Et al., Degradation of pharmaceutical compound pentoxifylline in water by non-thermal plasma treatment, Water Research, 44, 11, pp. 3445-3453, (2010)

← 1 2 3 →