Volume 11, Issue 3 (10-2015)                   HSR 2015, 11(3): 582-594 | Back to browse issues page

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Seid-Mohammadi A, Asgari G, Akbari S, Shabanlo A, Roshanaie G, Almasi H. A Comparative study on removal of reactive black 5 using Electrocoagulation and Electrocoagulation/Flotation Processes in aqueous solution. HSR 2015; 11 (3) :582-594
URL: http://hsr.mui.ac.ir/article-1-795-en.html
1- Social Determinants of Health Research Center, Department of Environmental Health Engineering, Faculty of public Health, Hamadan University of Medical Sciences, Hamadan. Iran
2- M.Sc. Student Environmental Health, Department of Health, Hamadan University of Medical Sciences, Hamadan. Iran
3- Assist prof. of Statistics and Epidemiology, Faculty of public health, Hamadan University of Medical Sciences, Hamadan. Iran
4- M.Sc. Student Environmental Health, Department of Health, Hamadan University of Medical Sciences, Hamadan, Iran
Abstract:   (702 Views)
Background: Nowadays, synthetic azo dye compounds as environmental pollutants are widely used in different application. In this study, the treatability of polluted effluents by reactive black 5 azo dye was investigated in a lab scale batch experimental reactor using electrocoagulation and electrocoagulation/flotation processes with aluminum electrodes.Methods: In the present study, an electrocoagulation flotation reactor in a lab scale with an approximate volume of 1 liter was prepared which is equipped with four Al electrodes with dimensions of 200*20*2 mm. The effects of operational parameters such as initial pH, current density, contact time, initial dye concentrations and flotation were evaluated. Findings: The results indicated that the highest dye removal rates in the electrocoagulation process were observed in natural pH of the solutions, 12.71 mA/Cm2 current density and 100 mg/l initial dye concentration at 30 min contact time. In these conditions, up to 81% of dye was removed in the electrocoagulation process. Based on the result obtained in this study, it was found that much higher dyes removal could be achieved by electrocoagulation/flotation processes (86%) process than that by electrocoagulation process in the same conditions.Conclusion: Electrocoagulation and electrocoagulation/flotation processes could be a promising process using aluminum electrodes for dye removal.Key Words: Electrocoagulation, Flotation, Removal, Reactive Black 5, Aluminum Electrode, Dye removal
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Type of Study: Research | Subject: education health and promotion
Received: 2020/07/16 | Accepted: 2015/10/15 | Published: 2015/10/15

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