Rights statement: This is the peer reviewed version of the following article: Esmaeili Bidhendi, M, Asadi, Z, Bozorgian, A, et al. New magnetic Co3O4/Fe3O4 doped polyaniline nanocomposite for the effective and rapid removal of nitrate ions from ground water samples. Environ Prog Sustainable Energy. 2019;e13306. https://doi.org/10.1002/ep.13306 which has been published in final form at https://aiche.onlinelibrary.wiley.com/doi/full/10.1002/ep.13306 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - New magnetic Co3O4/Fe3O4 doped polyaniline nanocomposite for the effective and rapid removal of nitrate ions from ground water samples
AU - Esmaeili Bidhendi, M.
AU - Asadi, Z.
AU - Bozorgian, A.
AU - Shahhoseini, A.
AU - Gabris, M.A.
AU - Shahabuddin, S.
AU - Khanam, R.
AU - Saidur, R.
N1 - This is the peer reviewed version of the following article: Esmaeili Bidhendi, M, Asadi, Z, Bozorgian, A, et al. New magnetic Co3O4/Fe3O4 doped polyaniline nanocomposite for the effective and rapid removal of nitrate ions from ground water samples. Environ Prog Sustainable Energy. 2019;e13306. https://doi.org/10.1002/ep.13306 which has been published in final form at https://aiche.onlinelibrary.wiley.com/doi/full/10.1002/ep.13306 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - In the present study, a new nanocomposite of iron/cobalt oxides and magnetic nanoparticle doped with polyaniline (PANI-Co3O4@MNPs) was synthesized and subsequently, evaluated for its potential in decontaminating nitrate ions from ground water. Various important parameters such as pH, mass dosage, adsorption time, initial concentration, and temperature were experimentally investigated. The important surface and chemical properties of PANI-Co3O4@MNPs, such as surface morphology and roughness, composition and chemical structure were evaluated using field emission scanning electron microscope, energy-dispersive X-ray spectroscopy, and Fourier transform infrared. Finally, the removal of nitrate was assessed using kinetic, adsorption isotherm, and thermodynamic studies to investigate the underlying mechanism of the removal process. Maximum adsorption capacity was found to be 68.96 mg/g for nitrate ions at pH 6, adsorbent dosage 60 mg within 60 min. The kinetic studies and the adsorption isotherms have been well fitted using pseudo first and the Freundlich models respectively whereas the thermodynamic parameters have been described in terms of enthalpy, entropy, and Gibbs free energy which showed a negative value signifying that the adsorption process was exothermic and spontaneous in nature.
AB - In the present study, a new nanocomposite of iron/cobalt oxides and magnetic nanoparticle doped with polyaniline (PANI-Co3O4@MNPs) was synthesized and subsequently, evaluated for its potential in decontaminating nitrate ions from ground water. Various important parameters such as pH, mass dosage, adsorption time, initial concentration, and temperature were experimentally investigated. The important surface and chemical properties of PANI-Co3O4@MNPs, such as surface morphology and roughness, composition and chemical structure were evaluated using field emission scanning electron microscope, energy-dispersive X-ray spectroscopy, and Fourier transform infrared. Finally, the removal of nitrate was assessed using kinetic, adsorption isotherm, and thermodynamic studies to investigate the underlying mechanism of the removal process. Maximum adsorption capacity was found to be 68.96 mg/g for nitrate ions at pH 6, adsorbent dosage 60 mg within 60 min. The kinetic studies and the adsorption isotherms have been well fitted using pseudo first and the Freundlich models respectively whereas the thermodynamic parameters have been described in terms of enthalpy, entropy, and Gibbs free energy which showed a negative value signifying that the adsorption process was exothermic and spontaneous in nature.
KW - cobalt oxide
KW - iron oxide
KW - magnetic adsorbent
KW - nitrate removal
KW - polyaniline
KW - Adsorption
KW - Adsorption isotherms
KW - Cobalt compounds
KW - Energy dispersive spectroscopy
KW - Free energy
KW - Gibbs free energy
KW - Groundwater
KW - Ions
KW - Iron oxides
KW - Morphology
KW - Nanocomposites
KW - Nanomagnetics
KW - Nanoparticles
KW - Nitrates
KW - Polyaniline
KW - Scanning electron microscopy
KW - Surface morphology
KW - Synthesis (chemical)
KW - Cobalt oxides
KW - Energy dispersive X ray spectroscopy
KW - Field emission scanning electron microscopes
KW - Fourier transform infra reds
KW - Magnetic adsorbents
KW - Nitrate removal
KW - Surface morphology and roughness
KW - Thermodynamic parameter
KW - Nitrogen removal
U2 - 10.1002/ep.13306
DO - 10.1002/ep.13306
M3 - Journal article
VL - 39
JO - Environmental Progress and Sustainable Energy
JF - Environmental Progress and Sustainable Energy
SN - 1944-7442
IS - 1
M1 - 13306
ER -