Volume 6, Number 2 (9-2013)                   ijhe 2013, 6(2): 221-232 | Back to browse issues page


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Bahrami M, Brumand-Nasab S, Kashkooli H, Farrokhian Firouzi A, Babaei A. Cadmium Removal from Aqueous Solutions Using Modified Magnetite Nanoparticles. ijhe. 2013; 6 (2) :221-232
URL: http://ijhe.tums.ac.ir/article-1-5191-en.html

1- Ph.D Student Department of irrigation and Drainage. Water Sciences Engineering Facualty. Shahid Chamran University, Ahvaz.
2- Professor, Department of Irrigation and Drainage, Water Sciences Engineering Facualty, Shahid Chamran University, Ahvaz, Iran.
3- Professor Irrigation Department, Khuzestan Science and Research Branch, Islamic Azad University, Iran
4- Assistant professor Department of Soil Science, Faculty of Agriculture, Shahid Chamran University, Ahvaz, Iran. , a.farrokhian@scu.ac.ir
5- Assistant professor Department of Environmental Health Engineering, School of Public Health and Environmental Technologies Research Center, Ahvaz Jundishapur University of medical Sciences, Ahvaz, Iran.
Abstract:   (5344 Views)
Background and Objectives: Among the heavy metals cadmium is of considerable environmental and health significance because of its increasing mobilization and human toxicity. The objectives of this research were to synthesize SDS modified magnetite nanoparticles (Fe3O4) and to determine its efficiency in cadmium removal from aqueous solutions. Materials and Methods: Modified magnetite nanoparticles were synthesized and the effects of pH and contact time on cadmium removal efficiency were investigated in batch system. Then kinetics and isotherm models coefficients were determined in the optimum pH and equilibrium time conditions. Scanning Electron Microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infra red (FTIR) were used to characterize the modified magnetite nanoparticles synthesized. Results: The SEM results showed that the diameter of the particles is 40-60 nm. It was found that the optimum pH value for maximum adsorption of 10 mg/L cadmium by 0.1 g adsorbent in 12 hr was 6. Kinetic study showed that the equilibrium time was 30 min. The adsorption kinetics fitted well using the Ho pseudo second-order kinetic model however, the adsorption isotherm could be described by the Freundlich model. The maximum adsorption capacity of modified magnetite nanoparticles for Cd2+ was found to be 9.604 mg/g. Conclusion: The results of this study indicated that the modified magnetite nanoparticles can be employed as an efficient adsorbent for the removal of cadmium from contaminated water sources
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Type of Study: Research | Subject: General
Received: 2012/10/1 | Accepted: 2013/01/23 | Published: 2014/03/17

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