Volume 2, Issue 2 (2-2016)                   J Jiroft Univ Med Sci 2016, 2(2): 61-68 | Back to browse issues page

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Mohammadian Fazli M, Abdollahi N. Yellow Azo63 Dye Removal from Aqueous Solutions by Adsorption on Multi-Walled Carbon Nanotubes. J Jiroft Univ Med Sci 2016; 2 (2) :61-68
URL: http://journal.jmu.ac.ir/article-1-88-en.html
1- , Department of Environmental Health Engineering, Faculty of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran.
2- Department of Environmental Health Engineering, Faculty of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran. , nahidabdollahi30@yahoo.com
Abstract:   (3694 Views)

Introduction: The dyes are organic compounds with complex structures that due to their toxicity, carcinogenicity and no biodegradability take into account one of the most important environmental pollutants. The purpose of this study is to evaluate the efficiency of Azo yellow 63 dye removal by multi-walled carbon nanotubes from aqueous solutions.

Methods: This experimental study was conducted at the  health school of Zanjan in 2014. The effect of different in dependent variables including detention time, pH, initial dye concentration, and carbon nanotubes dosage was investigated in order to find the optimum adsorption conditions. Equilibrium isotherms were used to identify the possible mechanism of the adsorption process and kinetics of dye removal was studied. All experiments were triplicated and randomized to exclude any bias.

Results: The maximum dye adsorption occurred during 120 minutes. The adsorption capacity for the dye foundat18.24 mg/gr. The dye removal efficiency was increased from28.84% to 86.40% by decreasing the initial concentration of dye from 120 to 10 mg/L. By increasing the adsorbent dose from 0.1 to 0.7 g/L, the dye removal was increased from 41.40% to 97.40%. It was found that the data fitted to Langmuir isotherm model (R2= 0.98) and to the pseudo-second order kinetic adsorption model (R2= 0.99).

Conclusion: Multi-walled carbon nanotubes can be effective for removal of Yellow Azo63 dye.

Keywords: Multi-Wall Carbon Nanotubes, Azo Yellow 63, Dye, Adsorption

Full-Text [PDF 876 kb]   (1913 Downloads)    
Type of Study: Research | Subject: Health Sciences / Environmental Health
Received: 2015/05/9 | Accepted: 2015/09/16 | Published: 2016/09/21

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