Investigation of Sonochemical Oxidation Process in the Presence of SiO2, CuSO4 and Na2SO4 in Removal of Acid Black1 Azo Dye from Aqueous Solution

Acid Black 1 dye due to the presence of benzene ring, toxicity, mutagenicity, carcinogenicity and non-degradability is one of the major dangers for human health and environment especially aquatic life. Hence, the removal of these compounds from polluted water and wastewater has been considered. This study has been investigated the removal of acid black1 azo dye from aqueous solution in the presence of SiO2, CuSO4 and Na2SO4. In this experimental study the treatability of effluent polluted with reactive acid black 1 dye was investigated by using sonochemical oxidation in a reactor. The sample with the desired concentrations of dye (200-400 mg/L) in pH= 3-11 was prepared, also the required concentrations of silica, copper sulfate and sodium sulfate (25 to 100 mg/L) and S2O82- (1 to 10 mM/L) were flowed into the reactor intermittently. Ferrous sulfate as a source of ion (1 to 10 mM/L) was used. The results have showed that 100% of the dye after 45 min at pH 3, 7.5 mM/L persulfate and concentration of 100 mg/ L in presence of 3 additives was removed. The dye removal in above condition decreased to 89.89% without the presence of additives. Also, the results showed that increasing the concentration of persulfate more than 10 mM/L no effect of removal of efficiency and the removal of the 64.56 percent decline.The findings showed the combined process of ultrasonic and persulfate with the presence of 3 additives in optimal conditions of operation can be used as an acceptable option in the removal of dye in various industrial wastewater.