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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 10, 2016, pp. 2437-2448
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Bioline Code: st16226
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 10, 2016, pp. 2437-2448
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Synthesis of poly(amidoamine)-graft-poly(methyl acrylate) magnetic nanocomposite for removal of lead contaminant from aqueous media
Pourjavadi, A.; Abedin-Moghanaki, A. & Hosseini, S. H.
Abstract
Poly(amidoamine)-graft-poly(methyl acrylate)
magnetic nanocomposite was synthesized via radical
polymerization of methyl acrylate onto modified magnetic
nanoparticles followed by the functionalization of the
methyl ester groups with poly(amidoamine) dendrimer.
The resulting poly(amidoamine)-graft-poly(methyl acrylate)
magnetic nanocomposite was then characterized by
infrared spectroscopy, transmission electron microscopy,
thermogravimetric analysis, scanning electron microscope
and X-ray diffraction analysis. Its application as an
adsorbent for the removal of Pb(II) ions was studied. The
removal capability of the adsorbent was investigated in
different pH values, contact time (kinetics) and initial
concentration of lead. Moreover, adsorption isotherms
were investigated to describe the mechanistic feature of
this nanocomposite for adsorption. Accordingly, its high
adsorption capacity (310 mg/g) and efficient adsorption
toward lead ions in aqueous solution were shown. To further
study of the chemistry behind the adsorption process, a
comprehensive density functional theory-based study was
performed, and a relatively strong interaction between
metal ions and adsorbent was observed based on the calculated
adsorption free energies.
Keywords
Magnetic nanocomposite; Adsorption; Poly(amidoamine) dendrimer; Poly(methyl acrylate)
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