Submitted: 08 Mar 2016
Revised: 21 Oct 2016
Accepted: 20 Dec 2016
First published online: 27 Dec 2016
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Avicenna J Environ Health Eng. 2016;3(2):5923-5923.
doi: 10.5812/ajehe.5923
  Abstract View: 160
  PDF Download: 217

Research Article

Effect of Silica on the Ultrasonic/Persulfate Process for Degradation of Acid Black 1 in Aqueous Solutions

Ali Reza Rahmani 1, Fahime Zamani 1, Amir Shabanloo 1, Halime Almasi 2 *

1 Department of Environmental Health Engineering, Faculty of Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, IR Iran
2 Department of Environmental Health Engineering, Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
* Corresponding author: Halime Almasi, Department of Environmental Health Engineering, Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran. Tel: +98-9131801815, Email: h.almasi14@yahoo.com

Article

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.
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