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首页> 外文期刊>Electrocatalysis >Electrochemical Degradation of Remazol Red BR and Novacron Blue C-D Dyes Using Diamond Electrode
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Electrochemical Degradation of Remazol Red BR and Novacron Blue C-D Dyes Using Diamond Electrode

机译：金刚石电极对Remazol Red BR和Novacron Blue C-D染料的电化学降解

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摘要

In this paper, the treatment of dye solutions containing Remazol Red BR (RRB) and Novacron Blue C-D (NB) by anodic oxidation using boron-doped diamond (BDD) anodes has been investigated. Galvanostatic electrolyses of RRB and NB solutions have led to the complete decolourisation and chemical oxygen demand (COD) removal at different operating conditions (current density, pH and temperature). Energy requirements for removing colour during galvanostatic electrolyses of RRB and NB synthetic solutions depend mainly on operating conditions; for example for RRB, it passes from 3.30 kWh m−3 at 20 mA cm−2 to 4.28 kWh m−3 at 60 mA cm−2 (pH = 1); 17.25 kWh m−3 at 20 mA cm−2 to 28.87 kWh m−3 at 60 mA cm−2 (pH = 4.5); 13.50 kWh m−3 at 20 mA cm−2 to 37.80 kWh m−3 at 60 mA cm−2 (pH = 8). Additionally, colour and COD removal rates were favoured when an increase on the temperature was attained, decreasing the energy consumption requirements. According to the experimental results obtained, the electrochemical oxidation process is suitable for depuration wastewaters containing these textile dyes, due to the electrocatalytic properties of BDD anode.
机译：本文研究了使用掺硼金刚石（BDD）阳极通过阳极氧化处理包含Remazol Red BR（RRB）和Novacron Blue C-D（NB）的染料溶液的方法。 RRB和NB溶液的恒电流电解已导致在不同的操作条件（电流密度，pH和温度）下完全脱色和化学需氧量（COD）去除。在RRB和NB合成溶液的恒电流电解过程中去除颜色的能量要求主要取决于操作条件。例如RRB，它从20 mA cm-2 时的3.30 kWh m-3 变为60 mA cm-2 时的4.28 kWh m-3 （pH = 1）;在20 mA cm−2 时为17.25 kWh m-3 到60 mA cm−2 时为28.87 kWh m-3 （pH = 4.5）;在20 mA cm−2 时为13.50 kWh m-3 到60 mA cm−2 （pH = 8）时为37.80 kWh m-3 。此外，当温度升高时，颜色和COD去除率也得到了提高，从而降低了能耗要求。根据获得的实验结果，由于BDD阳极的电催化特性，电化学氧化工艺适用于含有这些纺织染料的净化废水。

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