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Adsorption studies of nickel(II) metal ions uptake using Fe3O4 magnetic nanoadsorbent

Abd. Ali, Layth Imad and Wan Ibrahim, Wan Aini and Sulaiman, Azli and Sanagi, Mohd. Marsin (2014) Adsorption studies of nickel(II) metal ions uptake using Fe3O4 magnetic nanoadsorbent. Jurnal Teknologi, 71 (5). pp. 99-101. ISSN 0127-9696

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Official URL: http://dx.doi.org/10.11113/jt.v71.3864

Abstract

In the present study, Fe3O4 magnetic nanoparticles (MNPs) synthesized in-housed using co-precipitation method was applied for the treatment of aqueous solutions contaminated by Ni(II) ions. Experimental results indicated that at 25ºC, the optimum pH value for Ni(II) removal was pH 6.0 and an adsorbent dose of 60.0 mg. The adsorption capacity of Fe3O4 nanoparticles for Ni(II) is 20.54 mg g−1. Adsorption kinetic rates were found to be fast; total equilibrium was achieved after 180 min. Kinetic experimental data fitted very well the pseudo-second order equation and the value of adsorption rate constants was calculated to be 0.004 and 0.0008 g mg−1 min at 5 and 40 mg L−1 initial Ni(II) concentrations, respectively. The equilibrium isotherms were evaluated in terms of maximum adsorption capacity and adsorption affinity by the application of Langmuir and Freundlich equations. The maximum monolayer capacity obtained from the Langmuir isotherm was 24.57 mg g−1 for Ni(II). Results indicate that the Langmuir model fits adsorption isotherm data better than the Freundlich model

Item Type:Article
Uncontrolled Keywords:Fe3O4 magnetic nanoparticles, adsorption, nickel (ii) ions, langmuir and freundlich models
Subjects:Q Science
Divisions:Science
ID Code:51733
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:01 Feb 2016 11:54
Last Modified:27 Aug 2018 11:24

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