Environmental Science and Pollution Research

, Volume 25, Issue 17, pp 16864–16874 | Cite as

Efficient removal of arsenic(III) from aqueous media using magnetic polyaniline-doped strontium–titanium nanocomposite

  • Mohammad Kazem Mohammadi Nodeh
  • Mohammad Ali Gabris
  • Hamid Rashidi Nodeh
  • Mehdi Esmaeili Bidhendi
Research Article


In this study, a novel nanocomposite adsorbent based on magnetic polyaniline and strontium–titanium (MP-SrTiO3) nanoparticles was synthesized via a simple and low-cost polymerization method for efficiently removing of arsenic(III) ions from aqueous samples. The chemical structure, surface properties, and morphology of the prepared adsorbent were studied using Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM). The main effective parameters on the removal efficiency, such as pH, adsorbent dosage, salt, and contact time, were studied and optimized. The validity of the proposed method was checked by adsorption isotherm and kinetics models. Consequently, the adsorption kinetics corresponded to the first order (R2 > 0.99), and the experimental equilibrium fitted the Langmuir model with a maximum monolayer adsorption capacity of 67.11 mg/g (R2 > 0.99) for arsenic(III) ions. Corresponding to thermodynamic Vant’s Hof model (ΔG° (kJ/mol), ΔH° (kJ/mol), and ΔS° (kJ/mol K) − 8.19, − 60.61, and − 0.17, respectively), the mechanism and adsorption nature were investigated with that suggested exothermic and physisorption mechanism.


Polyaniline Strontium–titanium oxide Magnetic adsorbent Arsenic Kinetics Adsorption isotherm 



The authors would like to thank Tehran Province Water & Wastewater Co., (Tehran, Iran) and Graduate Faculty of Environment (University of Tehran) for the facilities.

Funding information

The authors would like to thank Young Researchers and Elite Club, Science and Research Branch, Islamic Azad University (Tehran, Iran) for the financial support.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Mohammad Kazem Mohammadi Nodeh
    • 1
  • Mohammad Ali Gabris
    • 2
  • Hamid Rashidi Nodeh
    • 3
  • Mehdi Esmaeili Bidhendi
    • 4
  1. 1.Water Quality Control LaboratoryTehran Province Water & Wastewater Co.TehranIran
  2. 2.Department of Chemistry, Faculty of ScienceUniversity of TehranTehranIran
  3. 3.Young Researchers and Elite Club, Science and Research BranchIslamic Azad UniversityTehranIran
  4. 4.Graduate Faculty of EnvironmentUniversity of TehranTehranIran

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