Electrochemical Decolorization of Reactive Dye from Synthetic Wastewater by Mono-Polar Aluminum Electrodes System

Khosravi, Rasoul and Hossini, Hooshyar and Heidari, Mohsen and Fazlzadeh, Mehdi and Biglari, Hamed and Taghizadeh, Aliakbar and Barikbin, Behnam (2017) Electrochemical Decolorization of Reactive Dye from Synthetic Wastewater by Mono-Polar Aluminum Electrodes System. Int. J. Electrochem. Sci, 12. pp. 4745-4755.

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Abstract

Azo dyes are important groups of chromospheres having a particular structure in color-contaminated wastewater. In the present study, Reactive Red 198 (RR198) dye was chosen as a model of azo dyes group. Electrocoagulation technique as an effective and environmental-friendly process for wastewater treatment was applied. Hence; to determine the extent of decolorization process, the main different parameters such as pH (4-11), contact time (80 min), initial concentrations (25-400 mg/L), current density (1.9-23.1 mA/cm2), distance between gaps (1-4 cm), and effect of supporting electrolytes were evaluated. Results show that optimum conditions were 20 min of operation time, 1 cm distance between electrodes, pH equal to 4 and optimum initial concentration of dye equal to 100 mg/L as well as NaCl was identified as the best electrolyte. Under these optimum conditions and also at both aeration and non-aeration operating conditions decolorization efficiency was more than 90%. The results also demonstrated that total organic carbon removal efficiency as (TOC), during 120 min of contact time was about 80.95%. XRF analyses show that a large portion of deposited sludge (58.282%) was aluminum oxide.

Item Type: Article
Subjects: R Medicine > RA Public aspects of medicine
Depositing User: Unnamed user with email eprints@gmu.ac.ir
Date Deposited: 27 Dec 2017 06:25
Last Modified: 27 Dec 2017 06:25
URI: http://eprints.gmu.ac.ir/id/eprint/360

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