Degradation of Nitrobenzene Wastewater by Electrocatalytic Oxidation with Ru0.7Si0.3O2/Ti Electrode

doi:10.3724/SP.J.1095.2011.00404

Chinese Journal of Applied Chemistry ›› 2011, Vol. 28 ›› Issue (05): 576-582.DOI: 10.3724/SP.J.1095.2011.00404

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Degradation of Nitrobenzene Wastewater by Electrocatalytic Oxidation with Ru_0.7Si_0.3O₂/Ti Electrode

LU Qiang¹, AN Lichao^1*, ZHONG Qin¹, HU Yue¹, XIA Wenwen², WANG Zhiliang³

(1.School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094;
2.Jiangsu Environmental Monitoring Center,Nanjing;
3.Jiangsu Key Laboratory of Environmental Engineering,Jiangsu Environmental Sciences Institute,Nanjing)

Received:2010-07-12 Revised:2010-09-29 Published:2011-05-10 Online:2011-05-10
Contact: Lu Qiang

Abstract

Abstract:

A Ru0.7Si0.3O2/Ti electrode is used as the anode and stainless steel as the cathode, to decompose nitrobenzene in wastewater. The optimal conditions are as follows when the original concentration is 220 mg/L, J(current density)=25×10-3 A/cm2, ρ(Na2SO4)=8 g/L, pH=2. Under the optimal conditions, the removal efficiencies of nitrobenzene and TOC are above 85% and 50%, respectively. The result shows Ru0.7Si0.3O2/Ti anode can effectively remove the organic pollutants in wastewater. The result of the intermediates detection shows that the nitrobenzene degradation is a synergistic process of the anode and the cathode.

Key words: Ru0.7Si0.3O2/Ti Electrode, nitrobenzene, electro-catalytic oxidation, wastewater treatment

CLC Number:

O646.5

LU Qiang1, AN Lichao1*, ZHONG Qin1, HU Yue1, XIA Wenwen2, WANG Zhiliang3. Degradation of Nitrobenzene Wastewater by Electrocatalytic Oxidation with Ru_0.7Si_0.3O₂/Ti Electrode[J]. Chinese Journal of Applied Chemistry, 2011, 28(05): 576-582.

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Degradation of Nitrobenzene Wastewater by Electrocatalytic Oxidation with Ru_0.7Si_0.3O₂/Ti Electrode

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