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http://dx.doi.org/10.14478/ace.2019.1092

Effects of Operational Parameters on the Removal of Acid Blue 25 Dye from Aqueous Solutions by Electrocoagulation  

Balarak, Davoud (Department of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences)
Ganji, Fatemeh (Department of Environmental Health, Student Research Committee, Zahedan University of Medical Sciences)
Choi, Suk Soon (Department of Biological and Environmental Engineering, Semyung University)
Lee, Seung Mok (Department of Environmental Engineering, Catholic Kwandong University)
Shim, Moo Joon (Department of Environmental Engineering, Catholic Kwandong University)
Publication Information
Applied Chemistry for Engineering / v.30, no.6, 2019 , pp. 742-748 More about this Journal
Abstract
Influence of several experimental parameters (e.g., initial dye concentration, pH, distance between electrodes, applied voltage, electrical conductivity, current density, and reaction time) on the performance of electrocoagulation (EC) process for the removal of acid blue 25 (AB25) was studied. A bipolar batch reactor was used to test the impact of the parameters. The removal efficiency (RE) of AB25 dye was promoted by increasing the contact time, voltage, electrical conductivity, and applied current density. In contrast, RE of AB25 decreased with higher level of AB25 and the longer distance between electrodes. The removal efficiency increased consistently until pH 7, but decreased above pH 7. The maximum efficiency of AB25 removal above 90% was obtained at a voltage of 60 V, reaction time of 90 min, distance between electrodes of 0.5 cm, initial concentration of 25 mg/L, conductivity of 3,000 μS/cm and pH of 7. These results imply that the high RE of AB25 dye from the aqueous solution can be achieved by EC process.
Keywords
Electrocoagulation; Acid blue 25; Aluminum electrodes;
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