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:: Volume 21, Issue 7 (2-2014) ::
Journal of Ilam University of Medical Sciences 2014, 21(7): 124-133 Back to browse issues page
Synthesis tea waste-supported magnetite nanoparticles and study affect onto Removal Chromium Cr(VI) from aqueous solution
Aliakbar Babaei, Zainab Baboli *1, Mehdi Ahmadi moghadam, Neematolah Jafarzade, Gholamreza Ghodarzi
1- , baboliz87@gmail.com
Abstract:   (9921 Views)
Background and Objectives Chromium is a common contaminant in ground and surface water, soil and waste water. Chromium is of considerable because of toxicity and environmental and human health. The aim of this research were to synthesize magnetite nanoparticles (Fe3O4) and determining its efficiency in chromium removal from aqueous solutions. Materials and Methods: 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 based on optimum conditions. Scanning Electron Microscopy (SEM), XRD were used to characterization of the synthesized magnetite nanoparticles. Results: SEM results showed that the diameter of the particles is 40-50 nm. Results showed that the optimum pH value for chromium adsorption was 2 and the equilibrium time was 60 min. The magnetite nanoparticles have advantages such as high removal efficiency and short reaction time and can be used as a method to remove cadmium from aqueous solutions. The adsorption kinetics fitted using the type1- pseudo second-order kinetic model and the adsorption isotherm could be described by the langmuer. The langmuer maximum adsorption capacity of magnetite nanoparticles for Cr(VI) was found to be 24 mgg-1. Conclusion: These results indicated that magnetite nanoparticles can be employed as an efficient adsorbent for the removal of chromium from contaminated water sources. The results also revealed that the magnetite nanoparticles supported have a better adsorption capacity, better magnetic properties and separation, and therefore, lower cost.
Keywords: nanoparticles, magnetite, kinetic, isotherm, batch experiment, chromium.
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Type of Study: Research | Subject: Environmental health
Received: 2012/12/31 | Accepted: 2014/01/22 | Published: 2014/02/5
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babaei A, baboli Z, ahmadi moghadam M, jafarzade N, ghodarzi G. Synthesis tea waste-supported magnetite nanoparticles and study affect onto Removal Chromium Cr(VI) from aqueous solution . Journal title 2014; 21 (7) :124-133
URL: http://sjimu.medilam.ac.ir/article-1-814-en.html

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Volume 21, Issue 7 (2-2014) Back to browse issues page
مجله دانشگاه علوم پزشکی ایلام Journal of Ilam University of Medical Sciences
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