Rezaei Roshanak - Academia.edu (original) (raw)
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Ahvaz Jundishapur University of Medical Sciences
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Papers by Rezaei Roshanak
Desalination and Water Treatment, 2015
Desalination and Water Treatment, 2015
2015): Optimization and evaluation of reactive dye adsorption on magnetic composite of activated ... more 2015): Optimization and evaluation of reactive dye adsorption on magnetic composite of activated carbon and iron oxide, Desalination and Water Treatment,
Magnetic nanoparticles (MNPs) have recently been adopted by researchers in the field of adsorptio... more Magnetic nanoparticles (MNPs) have recently been adopted by researchers in the field of adsorption/
biosorption for separation of pollutants from aqueous solutions. In this paper, chitosan was impregnated
with magnetite nanoparticles through a chemical co-precipitation method to fabricate hybrid adsorbents
of Fe3O4–chitosan. The physicochemical and structural properties of the adsorbent were characterized,
and then the performance of the adsorbent was evaluated for fluoride removal from water. The
operational factors affecting the adsorption process, including pH, contact time, adsorbent dosage, initial
fluoride concentration, and temperature, were studied. Various isotherm and kinetic models were also
used to evaluate the fit of the experimental data with the modeled results. The equilibrium data were
well described by the Freundlich model. The kinetics of the adsorption process followed the pseudosecond-
order model. Recycling results suggested that the Fe3O4–chitosan particles maintain a great
reusability potential for five consecutive cycles. Findings also showed that the Fe3O4–chitosan can be
easily regenerated via acid treatment. The results of the present work highlighted the potential of using
the Fe3O4–chitosan magnetic composite for the removal of fluoride from water. In conclusion, Fe3O4–
chitosan can be considered as an appropriate adsorbent for fluoride removal from water, because it can
be separated both quickly and easily, it has high efficiency, and it does not lead to secondary pollution.
Desalination and Water Treatment, 2015
Desalination and Water Treatment, 2015
2015): Optimization and evaluation of reactive dye adsorption on magnetic composite of activated ... more 2015): Optimization and evaluation of reactive dye adsorption on magnetic composite of activated carbon and iron oxide, Desalination and Water Treatment,
Magnetic nanoparticles (MNPs) have recently been adopted by researchers in the field of adsorptio... more Magnetic nanoparticles (MNPs) have recently been adopted by researchers in the field of adsorption/
biosorption for separation of pollutants from aqueous solutions. In this paper, chitosan was impregnated
with magnetite nanoparticles through a chemical co-precipitation method to fabricate hybrid adsorbents
of Fe3O4–chitosan. The physicochemical and structural properties of the adsorbent were characterized,
and then the performance of the adsorbent was evaluated for fluoride removal from water. The
operational factors affecting the adsorption process, including pH, contact time, adsorbent dosage, initial
fluoride concentration, and temperature, were studied. Various isotherm and kinetic models were also
used to evaluate the fit of the experimental data with the modeled results. The equilibrium data were
well described by the Freundlich model. The kinetics of the adsorption process followed the pseudosecond-
order model. Recycling results suggested that the Fe3O4–chitosan particles maintain a great
reusability potential for five consecutive cycles. Findings also showed that the Fe3O4–chitosan can be
easily regenerated via acid treatment. The results of the present work highlighted the potential of using
the Fe3O4–chitosan magnetic composite for the removal of fluoride from water. In conclusion, Fe3O4–
chitosan can be considered as an appropriate adsorbent for fluoride removal from water, because it can
be separated both quickly and easily, it has high efficiency, and it does not lead to secondary pollution.