Evaluating the Efficiency of Ultrasonic and Persulfate Compilative Process in Eosin Y Dye Removal from Aquaeous Solutions

Department Of Environment, گروه مهندسی بهداشت محیط،; Ghovami, Zh.; Dargahi, A.; Vanaee Tabar, M.

Evaluating the Efficiency of Ultrasonic and Persulfate Compilative Process in Eosin Y Dye Removal from Aquaeous Solutions

Authors

Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Science

Abstract

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.

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