Surface adsorption of poisonous Pb(II) ions from water using chitosan functionalised magnetic nanoparticles

IET Nanobiotechnology
Femina Carolin ChristopherVinoth Kumar Vaidyanathan

Abstract

In this study, chitosan functionalised magnetic nano-particles (CMNP) was synthesised and utilised as an effective adsorbent for the removal of Pb(II) ions from aqueous solution. The experimental studies reveal that adsorbent material has finer adsorption capacity for the removal of heavy metal ions. Parameters affecting the adsorption of Pb(II) ions on CMNP, such as initial Pb(II) ion concentration, contact time, solution pH, adsorbent dosage and temperature were studied. The adsorption equilibrium study showed that present adsorption system followed a Freundlich isotherm model. The experimental kinetic studies on the adsorption of Pb(II) ions exhibited that present adsorption process best obeyed with pseudo-first order kinetics. The maximum monolayer adsorption capacity of CMNP for the removal of Pb(II) ions was found to be 498.6 mg g(-1). The characterisation of present adsorbent material was done by FTIR, energy disperse X-ray analysis and vibrating sample magnetometer studies. Thermodynamic parameters such as Gibbs free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) have declared that the adsorption process was feasible, exothermic and spontaneous in nature. Sticking probability reported that adsorption of Pb(II) ions on C...Continue Reading

References

Nov 27, 2002·Water Research·Matthew M MatlockDavid A Atwood
Dec 15, 2010·Ecotoxicology and Environmental Safety·Edward M MagerMartin Grosell
Jun 23, 2015·ACS Applied Materials & Interfaces·Zhili LiStephan Koehler
Jul 4, 2016·Journal of Environmental Sciences (China)·Nabisab Mujawar MubarakNatesan Subramanian Jayakumar

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Citations

Jul 10, 2019·Environmental Technology·Zhiyuan WanHuifang Wu
Feb 28, 2020·Integrated Environmental Assessment and Management·Marwa GamalOla M Gomaa
Sep 3, 2020·Beilstein Journal of Nanotechnology·Dinesh RotakeNitin Kale
Nov 4, 2020·Advances in Colloid and Interface Science·Zahra Mohammadi, Seid Mahdi Jafari

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