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首页> 外文期刊>Environmental engineering and management journal >ELECTROCHEMICAL DECOLORIZATION TREATMENT OF NICKEL PHTHALOCYANINE REACTIVE DYE WASTEWATER
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ELECTROCHEMICAL DECOLORIZATION TREATMENT OF NICKEL PHTHALOCYANINE REACTIVE DYE WASTEWATER

机译：镍酞菁活性染料废水的电化学脱色处理。

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摘要

In this study, decolorization and degradation of aqueous nickel phthalocyanine reactive dye solutions was comparatively studied by electrochemical methods, such as electrocoagulation, electrooxidation and electro-Fenton processes. In the electrocoagulation process with aluminum electrodes the colored aqueous solutions containing 100 mg/L nickel phthalocyanine and 6 g/L NaCl were treated at initial pH 7.5 and applied current densities of 5, 10 and 20 mA/cm~2, where fast and 100% decolorization was achieved in 10, 5 and less than 2.5 minutes of electroprocessing respectively. The electrooxidation process was conducted in acidic electrolyte solutions containing 100 mg/L nickel phthalocyanine and 6 g/L Na_2SO_4 with Ti/Pt and graphite plate electrodes at the applied current density of 5 mA/cm~2. Even after 60 minutes of electrolysis time the dye remained undegradable by 17 and 40%, respectively. Substituting Na_2SO_4 with the same concentration of NaCl, complete degradation of the dye was achieved in 30 and 20 minutes with Ti/Pt and graphite electrodes respectively. In the electroFenton process with Fe electrodes and added amounts of H_2O_2 at pH 3 and an applied current density of 5 mA/cm~2 complete degradation of nickel phthalocyanine occurred in 20 minutes.
机译：在这项研究中，通过电化学方法，如电凝，电氧化和电芬顿工艺，比较研究了酞菁镍活性染料水溶液的脱色和降解。在铝电极的电凝过程中，将含有100 mg / L酞菁镍镍和6 g / L NaCl的有色水溶液在初始pH 7.5下进行处理，并施加5、10和20 mA / cm〜2的电流密度，其中快速和100 mA / cm〜2。分别在10分钟，5分钟和不到2.5分钟的电处理中实现％脱色。在含有100 mg / L酞菁镍镍和6 g / L Na_2SO_4的带有Ti / Pt的酸性电解质溶液和石墨板电极上以5 mA / cm〜2的施加电流密度进行电氧化过程。即使经过60分钟的电解时间，染料仍然分别无法降解17％和40％。用相同浓度的NaCl替代Na_2SO_4，分别用Ti / Pt和石墨电极分别在30和20分钟内实现了染料的完全降解。在具有Fe电极和pH 3的H_2O_2添加量以及施加的电流密度5 mA / cm〜2的ElectroFenton工艺中，酞菁镍在20分钟内完全降解。

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