Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 25, Issue 17, Pages 16864-16874Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-1870-0
Keywords
Polyaniline; Strontium-titaniumoxide; Magnetic adsorbent; Arsenic; Kinetics; Adsorption isotherm
Categories
Funding
- Young Researchers and Elite Club, Science and Research Branch, Islamic Azad University (Tehran, Iran)
Ask authors/readers for more resources
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 (R-2 > 0.99), and the experimental equilibrium fitted the Langmuir model with a maximum monolayer adsorption capacity of 67.11 mg/g (R-2 > 0.99) for arsenic(III) ions. Corresponding to thermodynamic Vant's Hof model (Delta G degrees (kJ/mol), Delta H degrees (kJ/mol), and Delta S degrees (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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available