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首页> 外文期刊>International Journal of Electrochemical Science >Study of the Electrochemical Oxidation of Reactive Textile Dyes Using Platinum Electrode
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Study of the Electrochemical Oxidation of Reactive Textile Dyes Using Platinum Electrode

机译：铂电极对活性纺织染料进行电化学氧化的研究

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Textile industries are widespread in developing countries. Among the various processes in the textileindustry, the dyeing process uses large volumes of water for dyeing, fixing and washing. Textileindustry wastewater is characterized by intensive color and high chemical oxygen demand (COD)concentrations that discarding of these toxic wastewaters to the environment will cause a majorproblem. In this study electrochemical oxidation of reactive textile dyes: Reactive Blue 52, ReactiveBlack 5, Reactive Green 15, and Reactive Yellow 125, using platinum anode was examined.Electrolysis is carried out in electrochemical cell containing membrane which is standard membrane inindustry. Membrane separated anodic and cathodic area. Supporting electrolyte was 0.1M sodiumsulfate which is also present in real textile effluents. Applied voltage of 6, 12 and 24V, and influenceof membrane on electrolysis were examined on model dye (Reactive Blue 52). Highest degradationdegree for model dye was achieved at 12V, so electrolysis of other dyes was done on this voltage.COD value of all dyes dropped after 60 minutes of electrolysis below a measurable level (<30mg/LO2), except Reactive Black 5 whose COD reduction was 57.95% with membrane and 35.28% withoutmembrane applied. Complete decolorization was achieved after 10 to 60 minutes for all dyes.Degradation products of model dye Reactive Blue 52 were monitored with HPLC, and influence of pHon decolorization was also examined on model dye.
机译：纺织工业在发展中国家很普遍。在纺织工业的各种过程中，染色过程使用大量的水进行染色，固定和洗涤。纺织工业废水的特征是强烈的颜色和较高的化学需氧量（COD）浓度，这些有毒废水向环境中的排放将引起重大问题。在这项研究中，使用铂阳极对活性纺织品染料：活性蓝52，活性黑5，活性绿15和活性黄125进行了电化学氧化。在含电化学电池的膜中进行电解，该膜是标准的膜工业。膜将阳极和阴极区分开。支持的电解质是0.1M硫酸钠，它也存在于实际的纺织品废水中。在模型染料（活性蓝52）上检测了6、12和24V的施加电压以及膜对电解的影响。模型染料的最高降解度是在12V下完成的，因此在此电压下可以进行其他染料的电解。电解60分钟后，所有染料的COD值均降至可测量的水平（<30mg / LO2）以下，但活性黑5的COD降低了有膜时为57.95％，无膜时为35.28％。所有染料在10至60分钟后完全脱色。用HPLC监测模型染料Reactive Blue 52的降解产物，并考察pH对模型染料的脱色影响。

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