New magnetic Co3O4/Fe3O4 doped polyaniline nanocomposite for the effective and rapid removal of nitrate ions from ground water samples

Esmaeili Bidhendi, M. and Asadi, Z. and Bozorgian, A. and Shahhoseini, A. and Gabris, M.A. and Shahabuddin, S. and Khanam, R. and Saidur, R. (2020) New magnetic Co3O4/Fe3O4 doped polyaniline nanocomposite for the effective and rapid removal of nitrate ions from ground water samples. Environmental Progress and Sustainable Energy, 39 (1). ISSN 1944-7442

[img]
Text (Nitrate removal R1-LU)
Nitrate_removal_R1_LU.pdf - Accepted Version
Restricted to Repository staff only until 3 July 2020.
Available under License Creative Commons Attribution-NonCommercial.

Download (1MB)

Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Environmental Progress and Sustainable Energy
Additional Information:
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.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
ID Code:
135769
Deposited By:
Deposited On:
26 Jul 2019 10:10
Refereed?:
Yes
Published?:
Published
Last Modified:
26 Mar 2020 04:00