Uptake of Pb(II) Ions from Simulated Aqueous Solution via Nanochitosan

In this work, nanochitosan (NC) was prepared through ionic gelation using low molecular weight chitosan and maleic acid (MA). The synthesized NC was characterized by atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). During preparat...

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Veröffentlicht in:Coatings (Basel) 2019, Vol.9 (12), p.862
Hauptverfasser: Zareie, Camellia, Kholghi Eshkalak, Saeideh, Najafpour Darzi, Ghasem, Sharifzadeh Baei, Mazyar, Younesi, Habibollah, Ramakrishna, Seeram
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container_issue 12
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container_title Coatings (Basel)
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creator Zareie, Camellia
Kholghi Eshkalak, Saeideh
Najafpour Darzi, Ghasem
Sharifzadeh Baei, Mazyar
Younesi, Habibollah
Ramakrishna, Seeram
description In this work, nanochitosan (NC) was prepared through ionic gelation using low molecular weight chitosan and maleic acid (MA). The synthesized NC was characterized by atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). During preparation, the particle size of the material depended on parameters such as concentration of chitosan and pH of the aqueous solution. After controlling the mentioned parameters, NC smaller than 100 nm was prepared. The chitosan and prepared NC were employed for the adsorption of Pb(II) from an aqueous solution in the form of a batch system. Among the sorption parameters, pH showed the strongest effect on the sorption process and removal of the maximum number of Pb(II) ions was obtained at pH value of 6. Pseudo-first-order and pseudo-second-order models were used to track the kinetics of the adsorption process. Langmuir and Freundlich’s isotherms were subjected to the absorption data to evaluate absorption capacity. NC proved to be an excellent adsorbent with a remarkable capacity to eliminate Pb(II) ions from aqueous solutions at multiple concentrations. The NC also showed better performance with a comparatively easier preparation process than in other reported work.
doi_str_mv 10.3390/coatings9120862
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source MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection
subjects Absorption
Acids
Adsorbents
Adsorption
Aqueous solutions
Atomic force microscopy
Chitosan
Fourier transforms
Lead
Low molecular weights
Maleic acid
Metals
Nanoparticles
Parameters
Particle size
Polymerization
Scanning electron microscopy
Sorption
Spectrum analysis
title Uptake of Pb(II) Ions from Simulated Aqueous Solution via Nanochitosan
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