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Agricultural Research Journal
Year : 2017, Volume : 54, Issue : 1
First page : ( 98) Last page : ( 102)
Print ISSN : 2395-1435. Online ISSN : 2395-146X.
Article DOI : 10.5958/2395-146X.2017.00017.5

Adsorption behaviour of magnesium ferrite nanoparticles synthesized by co-precipitation and combustion methods

Kaur Navneet, Kaur Manpreet*

Department of Chemistry, Punjab Agricultural University, Ludhiana-141 004

*Corresponding author: manpreetchem@pau.edu

Online published on 2 March, 2017.


Adsorption of Cr (VI) from aqueous solution by magnesium ferrite (MgFe2O4) nanoparticles (NPs) synthesized by co-precipitation and combustion methods was studied using batch mode. The factors influencing adsorption viz. solution pH, adsorbent dose, contact time, initial metal ion concentration and temperature were ascertained. Cr (VI) content was estimated spectrophotometrically. The maximum adsorption of Cr (VI) ions was achieved at pH 2.0. Thermodynamic parameters such as change in Gibb's free energy (ΔG), enthalpy (ΔH) and entropy (ΔS) were evaluated. NPs synthesized by different methods displayed small variation in the percent removal although BET surface area of NPs showed significant differences. The equilibrium adsorption data were analyzed by the Freundlich, Langmuir and Dubinin-Radushkevich adsorption isotherm models.



Adsorption, Cr (VI), Magnesium ferrite, Nanoparticles, Thermodynamics.


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