Anodic-Cathodic Electrochemical Oxidation System for O-Nitrophenol Degradation in Aqueous Solutions

Author

Li, Yan ; Liu, Huiling ; Liu, Yuan

Author_Institution

Dept. of Environ. Sci. & Eng., Harbin Inst. of Technol., Harbin

fYear

2008

Firstpage

3636

Lastpage

3639

Abstract

In this paper, the elimination of o-nitrophenol (o-NPh) in aqueous solutions by electrochemical oxidation at titanium-based bismuth-doped lead dioxide (Ti/Bi-PbO₂ ) anode and carbon gas diffusion cathode (carbon GDC) was investigated. Four factors of the degradation, i.e. current density I, initial pH, electrolysis temperature T, air input A, were studied. Under the conditions of I = 20 mA/cm², pH = 4, T = 45degC. A = 60 L/h, 100% o-nitrophenol removal and 94.6% COD removal has been obtained after 120-minute degradation. The degradation process could be described by pseudo-first order kinetics form.

Keywords

current density; diffusion; electrochemistry; electrolysis; oxidation; pH; wastewater treatment; PbO₂:Ti-Bi; anodic electrochemical oxidation; aqueous solutions; carbon gas diffusion cathode; cathodic electrochemical oxidation; current density; electrolysis temperature; o-nitrophenol degradation; pH; titanium-based bismuth-doped lead dioxide; Anodes; Carbon dioxide; Carbon nanotubes; Cathodes; Electrodes; Environmentally friendly manufacturing techniques; Oxidation; Pollution; Temperature; Thermal degradation;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1747-6

Electronic_ISBN

978-1-4244-1748-3

Type

conf

DOI

10.1109/ICBBE.2008.411

Filename

4535291