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Decolorization and degradation of reactive yellow HF aqueous solutions by electrochemical advanced oxidation

A Bedolla-Guzman¹, R Feria-Reyes², S Gutierrez-Granados¹

¹Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Cerro de la Venada s/n, Pueblito de Rocha, Guanajuato, Mexico.

Environmental Science and Pollution Research International

|July 31, 2016

Abstract:

Textile manufacturing is the one responsible for water bodies' contamination through the discharge of colored wastes. This work presents the study of reactive yellow HF (RYHF) dye degradation under two different electrochemical advanced oxidation processes (EAOP), namely anodic oxidation (AO) and electro-Fenton (EF)/boron-doped diamond (BDD) process. For the AO, 100 and 300 mg/L solutions using Pt and BDD as anodes in a 100 mL stirred tank cell were used, with a supporting electrolyte of 0.05 mol/L of Na₂SO₄ at pH 3 under 30 and 50 mA/cm² current density. The EF/BDD process was carried out in a flow reactor at 4 and 7 L/min to degrade 100, 200, and 300 mg/L RYHF solutions under 50 and 80 mA/cm². UV-Vis determinations were used for decolorization evaluation, while high-performance liquid chromatography (HPLC) method provided information on dye degradation rate.

Keywords:

Anodic oxidation EF/BDD process Textile industry Waste water treatment

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