Electro-Fenton treatment of aqueous Clopyralid solutions

被引：30

作者：

Ozcan, Ali ^{[2
]}

Oturan, Nihal ^{[1
]}

Sahin, Yuecel ^{[2
]}

Oturan, Mehmet A. ^{[1
]}

机构：

[1] Univ Paris Est, Lab Geomat & Geol Ingn, F-77454 Marne La Vallee 2, France

[2] Anadolu Univ, Fac Sci, Dept Chem, TR-26470 Eskisehir, Turkey

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2010年 / 90卷 / 3-6期

关键词：

electro-Fenton; AOP; hydroxyl radical; Clopyralid; mineralisation; HYDROXYL RADICALS; HYDROGEN-PEROXIDE; DEGRADATION; OXIDATION; WATER; PENTACHLOROPHENOL; MINERALIZATION; DECOMPOSITION; MECHANISM; REAGENT;

D O I：

10.1080/03067310903096011

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The removal of Clopyralid (CLPYD) from aqueous solutions was performed by the electro-Fenton process in which hydroxyl radicals are produced electrocatalytically and used to degrade the persistent organic pollutants. The decay kinetics well fitted to pseudo-first order reaction and absolute rate constant of the oxidation reaction of CLPYD was determined as (4.4 +/- 0.2) x 10(8) M-1 s(-1). The oxidation intermediates of CLPYD were identified by HPLC and IC analysis. Based on these intermediates, a general oxidation mechanism was proposed in acid medium. Mineralisation ability of the system was followed by the chemical oxygen demand (COD) analysis. The obtained results showed that the CLPYD aqueous solutions were efficiently mineralised during the electro-Fenton treatment.

引用

页码：478 / 486

页数：9

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