a Department of Chemical Engineering, Science and Research Branch , Islamic Azad University , Tehran , Iran.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2014;49(4):452-62. doi: 10.1080/10934529.2014.854685.
The photocatalytic degradation of synthetic dye solution of Reactive Blue 2 was investigated using UV irradiation in aqueous suspension of nanotitania as photocatalyst and H2O2 as electron acceptor in a slurry photoreactor. To determine the optimum condition of decolorization, the influential parameters including initial dye concentration, catalyst quantity, hydrogen peroxide concentration, pH value and UV light intensity were evaluated using the Taguchi statistical method. The results indicated that compared to the other parameters, UV light intensity was the most effective. The theoretically predicted value of decolorization efficiency (95.48%) was confirmed by the experimental value (95.22%). The mineralization was considered significant with regard to the obtained values of total organic carbon (TOC) analysis (92.52%) and chemical oxygen demand (COD) analysis (94.05%) in the optimum condition. Investigations were also carried out to determine the appropriate adsorption isotherm and kinetic model in the optimum condition. The obtained optimum condition for dye removal was finally examined applying a real sample of textile wastewater containing the dye.
采用纳米 TiO2 悬浮液作为光催化剂，在浆态光反应器中用 UV 辐照光催化降解合成染料溶液活性艳蓝 2。为了确定最佳脱色条件，采用田口统计方法考察了初始染料浓度、催化剂用量、过氧化氢浓度、pH 值和 UV 光强度等影响参数。结果表明，与其他参数相比，UV 光强度的影响最大。实验值（95.22%）验证了脱色效率（95.48%）的理论预测值。在最佳条件下，总有机碳（TOC）分析（92.52%）和化学需氧量（COD）分析（94.05%）得到的矿化程度表明具有重要意义。还研究了在最佳条件下确定合适的吸附等温线和动力学模型。最后，采用含有该染料的实际纺织废水样品对最佳去除条件进行了检验。
