Title of article :
Effect of Silica on the Ultrasonic/Persulfate Process for Degradation of Acid Black 1 in Aqueous Solutions
Author/Authors :
Rahmani, Ali Reza Department of Environmental Health Engineering - Hamadan University of Medical Sciences , Zamani, Fahime Department of Environmental Health Engineering - Hamadan University of Medical Sciences , Shabanloo, Amir Department of Environmental Health Engineering - Hamadan University of Medical Sciences , Almasi, Halime Department of Environmental Health Engineering - Student Research Committee - Ahvaz Jundishapur University of Medical Sciences
Abstract :
Azo dyes are the greatest classes of synthetic dyes, which are widely used in the textile industries. This study aimed at examining Acid Black 1 (AB1) removal from aqueous solution thermal activated persulfate using silica (SiO2). The effects of operational parameters such as initial pH, initial concentration of AB1, SiO2 dosage, and persulfate concentration were investigated and the chemical oxygen demand content was considered as a response. The results indicated that the removal efficiency had a direct relationship with concentration of SiO2 and persulfate up to their optimum values, and was inversely correlated with the alkaline pH and elevated concentrations of AB1. Moreover, the removal efficiency was increased significantly by increasing the silica concentration from 25 mg/L to 100 mg/L. Ultimately, AB1 was completely removed after 45 minutes.
Keywords :
Ultrasonic , Persulfate , Silica , Acid Black 1 , Azo Dyes
Journal title :
Avicenna Journal of Environmental Health Engineering
