Synthèse
Volume 26, Numéro 2, Pages 10-24
2020-10-20
Effect Of The Operating Parameters On The Discoloration Of The Black Azo Dye Blue Naphtol (nbb) By The Fenton Process
Authors : زينب حدمر . Meddah Salah . طيب بودرهم . Djeghader Imene . El Hadi Samar Mohamed .
Abstract
The effluents loaded with synthetic and natural dyes are difficult to remove; therefore it becomes necessary to find alternative methods to treat dyes that are recalcitrant to conventional treatments. Nowadays, Advanced Oxidation Processes (AOPs) are increasingly used and Fenton process is one of these technologies. In this work, the discoloration of Naphtol Blue Black (NBB) by Fenton process was studied. The Effects of operating parameters such as the nature of the acid and pH, the concentrations of hydrogen peroxide, iron and dye, temperature and stirring speed, the presence of salts, anions, metallic cations and the influence of real matrices, were examined. For a initial concentration of NBB equal to 30 mg/L, an efficiency of 98 % was obtained under pH = 3, SS = 250 rpm and [H2O2] = 55 mg/L.
Keywords
Water treatment; Fenton Process; Discoloration; Azo dye.
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