Electrochemical oxidation of the herbicide tebuthiuron using DSA®-type electrode

Química Nova

Universidade de São Paulo, São Carlos, Brasil¹  Alves, Suellen A.¹  Ferreira, Tanare C. R.¹  Lanza, Marcos R. V.¹ 

关键词: DSA-Cl2®;    electrooxidation;    tebuthiuron.;   

DOI  :  10.1590/S0100-40422012001000017

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Tebuthiuron (TBH) is a herbicide widely used in different cultures and known for its toxic effects. Electrochemical methods are promising for removing pollutants such as pesticides. This study showed the degradation of TBH using a DSA® anode operated at current densities of 50 to 200 mA cm-2. Removal presented pseudo-first order kinetics while high-pressure liquid chromatography (UV detection) showed two peaks, ascribed to degradation intermediates. The maximum percentage of total organic carbon removed was 12.9%. Ion chromatography revealed that higher concentrations of nitrate and nitrite ions formed with increasing current density.

【 授权许可】

Unknown