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首页> 外文期刊>Advances in Environmental Technology >Investigation of affecting operational parameters in photocatalytic degradation of reactive red 198 with TiO2: optimization through response surface methodology
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Investigation of affecting operational parameters in photocatalytic degradation of reactive red 198 with TiO2: optimization through response surface methodology

机译：TiO2光催化降解活性红198中影响操作参数的研究：响应面法优化

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Dye-containing wastewater generated from textile industries is a major source of environmental pollution. Azo dyes, which are the largest group of coloring agents, are widely used in industries.This research investigated the photocatalytic decolorization and degradation of an azo dye Reactive Red 198 (RR198) in aqueous solution with TiO2-P25 (Degussa) as photocatalyst in slurry form using UV light. There is a significant difference in adsorption of dye on TiO2 surface with the change in the solution pH. The effect of various parameters such as catalyst loading, pH and initial concentration of the dye on decolorization and degradation have been determined. The optimum conditions of the reactor were acquired at dye concentration = 62 ppm, pH = 3.7, catalyst concentration = 2.25 g.L-1, in which dye removal efficiency was 98%. Catalyst loading (relevant coefficient = 19.25) and pH (relevant coefficient = ?2.62) were resulted respectively as the most and less effective parameters on dye removal.
机译：纺织工业产生的含染料废水是环境污染的主要来源。偶氮染料是最大的一组着色剂，在工业中得到广泛应用。本研究研究了以TiO2-P25（Degussa）为光催化剂的水溶液中偶氮染料活性红198（RR198）在水溶液中的光催化脱色和降解。使用紫外线形成。随着溶液pH值的变化，染料在TiO2表面上的吸附存在显着差异。已经确定了各种参数（例如催化剂的负载量，pH和染料的初始浓度）对脱色和降解的影响。在染料浓度＝ 62ppm，pH ＝ 3.7，催化剂浓度＝ 2.25g.L-1下获得反应器的最佳条件，其中染料去除效率为98％。催化剂负载量（相关系数= 19.25）和pH（相关系数=？2.62）分别是去除染料最有效和最不有效的参数。

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