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Magnetic EDTA Functionalized Preyssler Cross Linked Chitosan Nanocomposite for Adsorptive Removal of Pb(II) Ions
Author(s) -
Tanhaei Bahareh,
Ayati Ali,
Bamoharram Fatemeh F.,
Sillanpää Mika
Publication year - 2017
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201700328
Subject(s) - adsorption , freundlich equation , nuclear chemistry , ethylenediaminetetraacetic acid , aqueous solution , langmuir , langmuir adsorption model , fourier transform infrared spectroscopy , desorption , chitosan , chemistry , scanning electron microscope , materials science , inorganic chemistry , chemical engineering , chelation , organic chemistry , composite material , engineering
In this study, the magnetic ethylenediaminetetraacetic acid (EDTA) modified Preyssler/chitosan/Fe 3 O 4 nanoparticles composite (EDTA‐PCF) was introduced as a novel adsorbent for Pb(II) ions removal from aqueous solutions. The characterization study of the prepared EDTA‐PCF was carried out by Fourier transform infrared spectrometer (FTIR), scanning electron microscopy (SEM) and N 2 adsorption‐desorption isotherms. The adsorption activity of EDTA‐PCF was evaluated by the effect of adsorbent dosage, pH and contact time on the Pb(II) ions removal. The optimum values for adsorbent dosage and pH were 1.2 g/L and 5.3, respectively (>99% removal efficiency for [Pb 2+ ] = 10 mg/L). In addition, the kinetic study was carried out using pseudo‐first order, pseudo‐second order, Bangham, Elovich, and Weber and Morris models and also the Langmuir, Freundlich, and Temkin isotherm models were applied for isothermal study. The results revealed that the pseudo‐second‐order rate model and Langmuir adsorption model can well describe the adsorption process of Pb(II) ions onto EDTA‐PCF. The Weber and Morris model proposed that film and intra‐particle diffusion were involved in this adsorption process. The maximum adsorption capacity of Pb(II) onto EDTA‐PCF was estimated to be 25.9 mg/g at 25°C.