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Title: Preparation and adsorption properties of nano magnetite chitosan films for heavy metal ions from aqueous solution

Abstract

Highlights: • Nano magnetite–chitosan films were prepared by casting method. • The efficiency of the prepared films for removing heavy metals was investigated. • The adsorption mechanism was studied using different isotherm and kinetic models. • Films reuse and metals recovery were studied. - Abstract: Nano magnetite chitosan (NMag–CS) film was prepared and characterized with different analytical methods. X-ray diffraction (XRD) patterns confirmed the formation of a pure magnetite structure and NMag–CS nanocomposite. TEM image of the film, revealed the uniform dispersion of magnetite nanoparticles inside chitosan matrix. The adsorption properties of the prepared film for copper, lead, cadmium, chromium and nickel metal ions were evaluated. Different factors affecting the uptake behavior by the composite films such as time, initial pH and film dose were investigated. The adsorption equilibrium attained using 2 g/L of the film after 120 min of reaction. The equilibrium data were analyzed using Langmuir and Freundlich models. The adsorption kinetics followed the mechanism of the pseudo-second-order equation for all metals. The metals regenerated from films with an efficiency greater than 95% using 0.1 M ethylene diamine tetra acetic acid (EDTA) and films were successfully reused for adsorption.

Authors:
 [1];  [1];  [2];  [1];  [3]
  1. Water Pollution Research Department, Environmental Research Division, National Research Centre, 33-El Buhoth St., Dokki, Cairo, 12311 (Egypt)
  2. Polymers and Pigments Department, National Research Centre, 33-El Buhoth St., Dokki, Cairo, 12311 (Egypt)
  3. Faculty of Science, Ain Shams University, Khalifa El-Maamon St., Abbasiya Sq., 11566, Cairo (Egypt)
Publication Date:
OSTI Identifier:
22581612
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 80; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ACETIC ACID; ADSORPTION; AQUEOUS SOLUTIONS; CADMIUM; CHROMIUM; COPPER; EDTA; LEAD; MAGNETIC MATERIALS; MAGNETITE; MATRIX MATERIALS; NANOCOMPOSITES; NANOPARTICLES; NICKEL; OLIGOSACCHARIDES; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Lasheen, M.R., E-mail: ragaei24@link.net, El-Sherif, Iman Y., E-mail: iman57us@yahoo.com, Tawfik, Magda E., E-mail: magdaemileta@yahoo.com, El-Wakeel, S.T., E-mail: shaimaa_tw@yahoo.com, and El-Shahat, M.F., E-mail: elshahatmf@hotmail.com. Preparation and adsorption properties of nano magnetite chitosan films for heavy metal ions from aqueous solution. United States: N. p., 2016. Web. doi:10.1016/J.MATERRESBULL.2016.04.011.
Lasheen, M.R., E-mail: ragaei24@link.net, El-Sherif, Iman Y., E-mail: iman57us@yahoo.com, Tawfik, Magda E., E-mail: magdaemileta@yahoo.com, El-Wakeel, S.T., E-mail: shaimaa_tw@yahoo.com, & El-Shahat, M.F., E-mail: elshahatmf@hotmail.com. Preparation and adsorption properties of nano magnetite chitosan films for heavy metal ions from aqueous solution. United States. doi:10.1016/J.MATERRESBULL.2016.04.011.
Lasheen, M.R., E-mail: ragaei24@link.net, El-Sherif, Iman Y., E-mail: iman57us@yahoo.com, Tawfik, Magda E., E-mail: magdaemileta@yahoo.com, El-Wakeel, S.T., E-mail: shaimaa_tw@yahoo.com, and El-Shahat, M.F., E-mail: elshahatmf@hotmail.com. Mon . "Preparation and adsorption properties of nano magnetite chitosan films for heavy metal ions from aqueous solution". United States. doi:10.1016/J.MATERRESBULL.2016.04.011.
@article{osti_22581612,
title = {Preparation and adsorption properties of nano magnetite chitosan films for heavy metal ions from aqueous solution},
author = {Lasheen, M.R., E-mail: ragaei24@link.net and El-Sherif, Iman Y., E-mail: iman57us@yahoo.com and Tawfik, Magda E., E-mail: magdaemileta@yahoo.com and El-Wakeel, S.T., E-mail: shaimaa_tw@yahoo.com and El-Shahat, M.F., E-mail: elshahatmf@hotmail.com},
abstractNote = {Highlights: • Nano magnetite–chitosan films were prepared by casting method. • The efficiency of the prepared films for removing heavy metals was investigated. • The adsorption mechanism was studied using different isotherm and kinetic models. • Films reuse and metals recovery were studied. - Abstract: Nano magnetite chitosan (NMag–CS) film was prepared and characterized with different analytical methods. X-ray diffraction (XRD) patterns confirmed the formation of a pure magnetite structure and NMag–CS nanocomposite. TEM image of the film, revealed the uniform dispersion of magnetite nanoparticles inside chitosan matrix. The adsorption properties of the prepared film for copper, lead, cadmium, chromium and nickel metal ions were evaluated. Different factors affecting the uptake behavior by the composite films such as time, initial pH and film dose were investigated. The adsorption equilibrium attained using 2 g/L of the film after 120 min of reaction. The equilibrium data were analyzed using Langmuir and Freundlich models. The adsorption kinetics followed the mechanism of the pseudo-second-order equation for all metals. The metals regenerated from films with an efficiency greater than 95% using 0.1 M ethylene diamine tetra acetic acid (EDTA) and films were successfully reused for adsorption.},
doi = {10.1016/J.MATERRESBULL.2016.04.011},
journal = {Materials Research Bulletin},
number = ,
volume = 80,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}
  • The role of pH in adsorption of Cu(II) from aqueous solutions containing chelating agents on chitosan was emphasized. Four chelating agents including ethylenediaminetetraacetic acid (EDTA), citric acid, tartaric acid, and sodium gluconate were used. It was shown that the adsorption ability of Cu(II) on chitosan from its chelated solutions varied significantly with pH variations. The competition between coordination of Cu(II) with unprotonated chitosan and electrostatic interaction of the Cu(II) chelates with protonated chitosan took place because of the change in solution pH during adsorption. The maximum adsorption capacity was obtained within each optimal pH range determined from titration curves ofmore » the chelated solutions. Coordination of Cu(II) with the unprotonated chitosan was found to dominate at pH below such an optimal pH value.« less
  • A new SBA-15 supported 1,4,7-triazacyclononane modified mesoporous silica adsorbent (SBA-TACN) has been synthesized using post grafting route and has thoroughly been characterized by small angle X-ray scattering (SAXS), N{sub 2} adsorption–desorption measurements, Fourier-transform infrared (FT-IR), solid-state {sup 29}Si MAS and {sup 13}C CP MAS NMR spectroscopy, transmission electron (TEM) and scanning electron microscopy (SEM), elemental analysis (EA) and thermogravimetric analysis (TGA). The synthesized material shows excellent copper (II) ion adsorption selectivity at pH 5 in mixed metal ion solution containing Cu{sup 2+}, Cr{sup 3+}, Ni{sup 2+}, Co{sup 2+} and Li{sup +}. The copper ion adsorption capacity of the SBA-TACN canmore » reach a maximum value of 0.67 mmol/g. Possible adsorption mechanism of metal ions on SBA-TACN has been discussed. The adsorbent can be readily regenerated by HNO{sub 3}–NH{sub 3} treatment. -- Graphical abstract: A new SBA-15 supported 1,4,7-triazacyclononane (TACN) modified mesoporous silica (SBA-TACN) adsorbent has been developed which shows excellent selectivity in Cu{sup 2+} adsorption from aqueous mixed metal ion solutions at pH 5. The copper ion adsorption capacity of the SBA-TACN can reach a maximum value of 0.67 mmol/g. The adsobent is stable enough to be used atleast for three cycles. Highlights: • Synthesis of a new TACN modified mesoporous silica SBA-15 type adsorbent. • The density of 1,4,7-triazacyclononane on SBA-15 is 1.22 mmol/g. • First report on the selective Cu{sup 2+} adsorption by TACN modified mesoporous silica. • Cu{sup 2+} adsorption capacity of the SBA-TACN can reach a maximum value of 0.67 mmol/g. • Potential candidate for selective removal of Cu{sup 2+} from contaminated water samples.« less
  • The mesoporous silicas were synthesized via the evaporation-induced self-assembly (EISA) in the experiment. Cetyltrimethyl ammonium bromide (CTAB) was used as the template, and the silicon source was tetraethoxyorthosilicate (TEOS). The mesoporous silicas were characterized by nitrogen adsorption-desorption analysis, FTIR, TEM and SEM. The mesoporous silicas (adsorbent) exhibited higher pore diameter (centered at 5.57 nm), BET surface area (457.3 m{sup 2{center_dot}}g{sup -1}) and pore volume (0.563 cm{sup 2{center_dot}}g{sup -1}). The mesoporous silicas were used as the adsorbent to remove the heavy metal ions from aqueous solution. The following order of equilibrium adsorption capacity for Cu{sup 2+}, Co{sup 2+}, Ag{sup +} andmore » As{sup 3+} on adsorbent was: Ag{sup +}>Cu{sup 2+}>Co{sup 2+}>As{sup 3+}. Analysis of adsorption kinetics showed that Cu{sup 2+}, Co{sup 2+}, Ag{sup +} and As{sup 3+} adsorption fit the pseudo-second-order nonlinear model significantly. The removal rate for heavy metal ions was high, and the adsorbent can be regenerated by acid treatment without altering its properties.« less
  • Highly porous chelating resin was fabricated from the natural polysaccharide chitosan. The adsorption capacity was increased by polyamination with poly(ethylene imine) (MW = 10,000). The capacity was about 1-2 times larger than that of commercial chelate resins. The selectivity for adsorption of metal ions on the resin, which was determined for a single solute at pH [approx equal] 7, was Hg(II) > UO[sub 2](II) > Cd(II) > Zn(II) > Cu(II) > Ni(II). Mg(II), Ca(II), Ga(III), As(III), and Sr(II) were not adsorbed on the resin at all. The selectivity depended on the pH of each metal solution. The equilibrium isotherms formore » adsorption of HgCl[sub 2] were correlated by the Langmuir equation. The saturation capacities were close to the concentration of amino group fixed on the resin. When HCl or NaCl coexisted in HgCl[sub 2] solution and their concentrations were lower than 100 mol/m[sup 3], the saturation capacity of HgCl[sub 2] was little affected by them. When 500 mol/m[sup 3] H[sub 2]SO[sub 4] coexisted in HgCl[sub 2] solution, extremely low pH inhibited the adsorption of Hg(II) at all.« less
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