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Int. J. Mol. Sci. 2014, 15(7), 12913-12927; doi:10.3390/ijms150712913

Rapid Adsorption of Heavy Metals by Fe3O4/Talc Nanocomposite and Optimization Study Using Response Surface Methodology

Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia
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Received: 31 May 2014 / Revised: 23 June 2014 / Accepted: 1 July 2014 / Published: 21 July 2014
(This article belongs to the Section Material Sciences and Nanotechnology)
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Abstract

Fe3O4/talc nanocomposite was used for removal of Cu(II), Ni(II), and Pb(II) ions from aqueous solutions. Experiments were designed by response surface methodology (RSM) and a quadratic model was used to predict the variables. The adsorption parameters such as adsorbent dosage, removal time, and initial ion concentration were used as the independent variables and their effects on heavy metal ion removal were investigated. Analysis of variance was incorporated to judge the adequacy of the models. Optimal conditions with initial heavy metal ion concentration of 100, 92 and 270 mg/L, 120 s of removal time and 0.12 g of adsorbent amount resulted in 72.15%, 50.23%, and 91.35% removal efficiency for Cu(II), Ni(II), and Pb(II), respectively. The predictions of the model were in good agreement with experimental results and the Fe3O4/talc nanocomposite was successfully used to remove heavy metals from aqueous solutions.
Keywords: heavy metals; Fe3O4/talc nanocomposites; adsorption; response surface methodology (RSM); adsorption kinetics heavy metals; Fe3O4/talc nanocomposites; adsorption; response surface methodology (RSM); adsorption kinetics
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Kalantari, K.; Ahmad, M.B.; Masoumi, H.R.F.; Shameli, K.; Basri, M.; Khandanlou, R. Rapid Adsorption of Heavy Metals by Fe3O4/Talc Nanocomposite and Optimization Study Using Response Surface Methodology. Int. J. Mol. Sci. 2014, 15, 12913-12927.

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