Degradation of textile dyes and remediation of dying residues by Fenton, photo-Fenton and electro-Fenton processes

Química Nova

Universidade Federal do Paraná, Curitiba, Brasil¹  Marcolino Jr., Luiz H.¹  Salvador, Terezinha¹  Peralta-Zamora, Patricio¹ 

关键词: textile dyes;    degradation;    electro-Fenton.;   

DOI  :  10.1590/S0100-40422012000500013

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work the degradation of textile dyes were evaluated, using Fenton, photo-Fenton and electro-Fenton processes. Under optimized conditions Fenton and photo-Fenton processes showed high decolorization capacity of the model dyes. The electro-Fenton process was carried out in an undivided electrochemical reactor (1000 mL) equipped with a carbon-felt cathode (253 cm2) and a platinum gauze anode (6 cm2). Under optimal conditions (J: 1.6 mA cm-2, Na2SO4: 0.075 mol L-1, pH: 3) H2O2 concentration of about 60 mg L-1 was observed. The addition of Fe2+ (15 mg L-1) induces Fenton reactions that permit almost total decolorization of textile dyes.

【 授权许可】

Unknown