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

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

doi:10.1007/s40995-016-0102-z

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

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

Chemical, Materials & Metallurgical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (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 language	English
Pages (from-to)	859-865
Journal	Iranian Journal of Science and Technology, Transaction A: Science
Volume	41
Issue number	3
DOIs	https://doi.org/10.1007/s40995-016-0102-z
Publication status	Published - 2017

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title = "Investigation of the Electromagnetic Enhancement for the Abatement of Hexavalent Chromium Using Magnetite as Adsorben",

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.",

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T1 - Investigation of the Electromagnetic Enhancement for the Abatement of Hexavalent Chromium Using Magnetite as Adsorben

AU - Muza, L.

AU - Dube, D.

AU - Ochieng, Aoyi

AU - Chiririwa, Harry

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

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DO - 10.1007/s40995-016-0102-z

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JO - Iranian Journal of Science and Technology, Transaction A: Science

JF - Iranian Journal of Science and Technology, Transaction A: Science

IS - 3

ER -

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

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