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Khodadadi, M., Ehrampoush, M., Mahvi, A., Dorri, H., Rafati, L., Naghizadeh, A. (2015). Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution. Journal of Advances in Environmental Health Research, 3(4), 266-275. doi: 10.22102/jaehr.2015.40211
Maryam Khodadadi; Mohammad Hassan Ehrampoush; Amir Hossein Mahvi; Hadigheh Dorri; Lida Rafati; Ali Naghizadeh. "Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution". Journal of Advances in Environmental Health Research, 3, 4, 2015, 266-275. doi: 10.22102/jaehr.2015.40211
Khodadadi, M., Ehrampoush, M., Mahvi, A., Dorri, H., Rafati, L., Naghizadeh, A. (2015). 'Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution', Journal of Advances in Environmental Health Research, 3(4), pp. 266-275. doi: 10.22102/jaehr.2015.40211
Khodadadi, M., Ehrampoush, M., Mahvi, A., Dorri, H., Rafati, L., Naghizadeh, A. Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution. Journal of Advances in Environmental Health Research, 2015; 3(4): 266-275. doi: 10.22102/jaehr.2015.40211

Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution

Article 7, Volume 3, Issue 4, Autumn 2015, Page 266-275  XML PDF (928.35 K)
Document Type: Original Article
DOI: 10.22102/jaehr.2015.40211
Authors
Maryam Khodadadi1; Mohammad Hassan Ehrampoush2; Amir Hossein Mahvi3; Hadigheh Dorri4; Lida Rafati2; Ali Naghizadeh 5
1Department of Environmental Health Engineering, International Campus, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
2Environmental Sciences and Technology Research Center AND Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
3Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
4Department of Environmental Health Engineering, School of Public Health, Birjand University of Medical Sciences, Birjand, Iran
5Department of Environmental Health Engineering, School of Health, Birjand University of Medical Sciences, Birjand, Iran
Abstract
Copper and hexavalent chromium are heavy metals that are harmful to human health. Natural adsorbent chitosan, due to its considerable properties such as the presence of functional groups of –NH2 and -OH, non-toxicity, low cost, and biocompatibility, has gained much attention in pollutant removal. Therefore, in the present study, adsorption of chromium (VI) and copper (II) ions was conducted in a batch system using magnetic chitosan/Fe-Zr nanoparticles. In addition, the effect of different variables such as contact time, pH, adsorbent dose, initial concentration of heavy metals, and temperature were investigated. The results of the present study indicated that the highest efficiency in removal of chromium (VI) and copper (II) in pH of 4 were 99.52% and 97.72%, respectively. Moreover, adding 0.4 g of the composite at concentration of 5 mg/l can result in up to 97.43% removal of copper (II) and adding 1 g of this composite at the same concentration can result in more than 91% removal of chromium (VI). In addition, it was concluded that increasing the density of the heavy metals did not have a remarkable effect on the removal efficiency. The equilibrium related to adsorbent capacity and the amounts of nanoparticles were obtained using the plots of Langmuir and Freundlich adsorption isotherms for chromium (VI) and copper (II), respectively. The studied adsorbent had a high level of efficiency in the removal of heavy metals from aqueous solutions. 
Keywords
Magnetic Chitosan; Adsorption; Chromium; copper
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