Azam Aleboyeh, Hamid Aleboyeh
Laboratoire Génie des Procédés de Traitement des Effluents, Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute Alsace, France.
J Hazard Mater. 2006 May 20;133(1-3):167-71. doi: 10.1016/j.jhazmat.2005.10.005. Epub 2005 Nov 17.
Wastewater from textile processing plants can be highly colored and difficult to decolorize. During the past few years attention has been drawn to chemical techniques that could be used to textile wastewater decolorization. A crucial feature in designing such systems is the optimization of operating conditions. In the present study, advanced oxidation treatment, the UV/H(2)O(2) process has been applied to decolorization of the azo dye C.I. Acid Orange 7 (AO7) in aqueous solution in a batch photo reactor. The effects of the reactor gap size and UV dosage on decolorization of dye have been investigated. The method of study involved monitoring the rate of dye solution decolorization during irradiation by a low-pressure mercury lamp and varying gap size and volume of the reactor. The rate of color removal was studied by measuring of the absorbance at characteristic wavelength. The gap size of the reactor was adjusted by different depths of the reactor. The results of this study showed that the removal efficiency of AO7 is optimal with 0.3 cm gap size and 83.33 Wl(-1) of UV dosage.
纺织加工厂排放的废水颜色可能很深，且难以脱色。在过去几年中，人们的注意力已转向可用于纺织废水脱色的化学技术。设计此类系统的一个关键特征是操作条件的优化。在本研究中，先进的氧化处理方法，即UV/H₂O₂工艺，已被应用于在间歇式光反应器中对水溶液中的偶氮染料C.I.酸性橙7（AO7）进行脱色。研究了反应器间隙尺寸和紫外线剂量对染料脱色的影响。研究方法包括在低压汞灯照射期间监测染料溶液的脱色速率，并改变反应器的间隙尺寸和体积。通过测量特征波长处的吸光度来研究脱色速率。通过调整反应器的不同深度来调节反应器的间隙尺寸。本研究结果表明，当间隙尺寸为0.3厘米且紫外线剂量为83.33 Wl⁻¹时，AO7的去除效率最佳。
