عنوان مقاله [English]
Dyes are one of the most important pollutants in textile wastewater, which are often carcinogenic, mutagenic and non-biodegradable, so it is important to remove them from the wastewater in terms of the environment. Therefore, the purpose of this study is to evaluate the efficiency of the compilative process of US/S2O8-2 in Eosin Y Dye removal from Aqueous Solutions. In this experimental study, it was possible to remove Eosin Y dye using ultrasonic waves alone and with persulfate oxidants. All reactions were performed in a
1000 ml cell of the ultrasonic bath. The effects of different parameters such as molar persulfate concentration (0.005-0.001 mol/l), dye concentration (100-100 mg/l) and pH (11-11) were investigated. To measure Eosin Y dye, UV/Vis-DR 5000 spectrophotometer was used at 515 nm wavelength. The results of this study showed that by increasing the oxidant concentration, the removal efficiency increased significantly, then a steady trend was observed in removing Eosin Y dye. The process used (US/S2O8-2) at pH=3, the persulfate concentration of 0.200 mol/l, and the time of 60 min had the highest removal efficiency (99.03%). Ultrasonic alone had little effect on the removal of this dye. The results of the effect of ion changes from calcium chloride on the performance of the process of US/S2O8-2 were ineffective for Eosin Y dye. Finally, the kinetic results showed that the US/S2O8-2 process followed a first-order reaction. The results of the use of the US/S2O8-2 process in the removal of Eosin Y dye indicated that this process has the proper ability to remove dyes and can be used as an effective method to remove Eosin Y from industrial wastewaters.