Investigation of the Electromagnetic Enhancement for the Abatement of Hexavalent Chromium Using Magnetite as Adsorben

L. Muza, D. Dube, Aoyi Ochieng, Harry Chiririwa

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1 Citation (Scopus)

Abstract

This study examined the removal of Cr(VI) using magnetite assisted by an electromagnetic field. These magnetic nanoparticles can be used to adsorb Cr(IV) ions in wastewater. Batch experiments were carried out to investigate the adsorption of hexavalent chromium onto magnetic nanoparticles. The adsorption equilibrium was attained with a 45 min contact time. The equilibrium adsorption isotherms were evaluated using Langmuir and Freundlich models. The adsorption isotherm fitted well to both isotherms with maximum adsorption capacity of 0.147 mg g−1. The adsorption was between 32.7 and 97.8 % under conditions studied. The results showed that the nanoparticles in the presence of an external magnetic field, generated by an optimum current of 2.5 A, have the highest adsorption capacity for Cr(VI) ions per unit magnetite weight.
Original languageEnglish
Pages (from-to)859-865
JournalIranian Journal of Science and Technology, Transaction A: Science
Volume41
Issue number3
DOIs
Publication statusPublished - 2017

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