Degradation of diclofenac in water using a pulsed corona discharge

被引：90

作者：

Dobrin, D. ^{[1
]}

Bradu, C. ^{[2
]}

Magureanu, M. ^{[1
]}

Mandache, N. B. ^{[1
]}

Parvulescu, V. I. ^{[2
]}

机构：

[1] Natl Inst Lasers Plasma & Radiat Phys, Dept Plasma Phys & Nucl Fus, Magurele 077125, Romania

[2] Univ Bucharest, Dept Organ Chem Biochem & Catalysis, Bucharest 030016, Romania

来源：

CHEMICAL ENGINEERING JOURNAL | 2013年 / 234卷

关键词：

Water treatment; Non-thermal plasma; Pulsed corona discharge; Diclofenac; CLOFIBRIC ACID; WASTE-WATER; PHOTOCATALYTIC DEGRADATION; HUMAN PHARMACEUTICALS; ADVANCED OXIDATION; TREATMENT PLANTS; DRUG DICLOFENAC; OZONE; REMOVAL; CARBAMAZEPINE;

D O I：

10.1016/j.cej.2013.08.114

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

The oxidative degradation of the pharmaceutical drug diclofenac (DCF) in water was studied using a pulsed corona discharge generated above liquid. It was found that DCF in solution was completely removed after 15 min non-thermal plasma treatment. The mineralization degree of DCF, expressed as the decrease of Total Organic Carbon (TOC), was approximately 50% after 30 min exposure to plasma. A good correlation between the evolution of the Total Carbon and the amount of CO2 released was observed. The elimination of chlorine from DCF occurs rapidly: over 95% is released as Cl- after 15 min non-thermal plasma treatment, indicating the absence of chlorinated degradation products in the treated solution. Several reaction by-products are identified and based on this a tentative degradation pathway of DCF under plasma conditions is proposed. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：389 / 396

页数：8

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