Sorption Efficiency of Chitosan Nanofibers toward Metal Ions at Low Concentrations

Download

index.pdf

Date

2010-12-01

Author

Horzum, Nesrin
Boyacı, Ezel
Eroglu, Ahmet E.
Shahwan, Talal
Demir, Mustafa M.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

154
views

105
downloads

Chitosan fibers showing narrow diameter distribution with a mean of 42 nm were produced by electrospinning and utilized for the sorption of Fe(III), Cu(II), Ag(I), and Cd(II) ions from aqueous solutions. The ion concentrations in the supernatant solutions were determined using inductively coupled plasma-mass spectrometry (ICP-MS). The filtration efficiency of the fibers toward these ions was studied by both batch and microcolumn methods. High efficiency in sorption of the metal ions was obtained in the both methods. The effects of sorbent amount (0.10-0.50 mg), shaking time (15-120 min), initial metal ion concentration (10.0-1000.0 mu g.L-1), and temperature (25 and 50 degrees C) on the extent of sorption were examined. The sorbent amount did not significantly alter the efficiency of sorption; however, shaking time, temperature, and metal ion concentration were found to have a strong influence on sorption. By virtue of its mechanical integrity, the applicability of the chitosan mat in solid phase extraction under continuous flow looks promising.

Subject Keywords

Cross-Linked Chitosan, Aqueous-Solution, Cu(II) Ions, Adsorption, Removal, Membranes, Equilibrium, Beads, Complexation, Derivatives

URI

https://hdl.handle.net/11511/36921

Journal

BIOMACROMOLECULES

DOI

https://doi.org/10.1021/bm100755x

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Sorption of BB41 dye molecules using chitosan based particles from aqueous solutions: A kinetic and thermodynamic evaluation Demirtas, Hulya; Tasar, Seyda; Kaya, Fatih; Ozer, Ahmet (2022-08-01) In this study, starting from chitosan is a hydrophilic polymer with positively charged, it was aimed to produce chitosan-based particles and to be evaluated as a sorbent. Chitosan-based polymeric particles production was carried out by the precipitation-collection method from chitosan. Chitosan and chitosan-based sorbent were characterized. For this purpose, SEM and FTIR analyzes were used. Sorption activities of the chitosan-based polymeric particles were investigated for basic dye (basic blue 41, BB41). T...
SORPTION PROPERTIES OF SILICALITE-1 OF PURE SILICA FORM - THE INFLUENCE OF SORPTION HISTORY ON SORPTION KINETICS OF CRITICALLY SIZED MOLECULES KARSH, H; Çulfaz, Ali; YUCEL, H (Elsevier BV, 1992-07-01) Sorption properties of silicalite-1 samples of pure silica form for some parafinic and aromatic hydrocarbons of different molecular sizes were investigated. It was observed that sorption rates and apparent equilibrium capacities for critically sized molecules, m-xylene and o-xylene, depend on the sorption history of the sample. Sorption of m- and o-xylene proceeded extremely slowly on fresh samples of silicalite-1, whereas sorption rates of these molecules on silicalite-1 samples that had passed through a p...
Thermal decomposition of glycidyl azide polymer by direct insertion probe mass spectrometry Fazlioǧlu, Hatice; Hacaloğlu, Jale (2002-01-01) Thermal decomposition reactions and products of glycidyl azide polymer (GAP), have been investigated by direct insertion mass spectrometry and evolved gas analyses by FTIR spectroscopy techniques. It has been observed that thermal degradation of GAP begins with cleavage of the side groups. Although the main decomposition started with the elimination of molecular nitrogen from the azide functional group, degradation initiated by loss of N-3 and CH2N3, depolymerization type reactions were also identified. Rea...
Viscosity measurement and modeling of lipid supercritical carbon dioxide mixtures Yener, Meryem Esra; Rizvi, SSH; Harriott, P (1998-01-31) The viscosities of supercritical carbon dioxide (SC-CO2) containing different levels of methyl oleate and oleic acid were measured with a high pressure capillary viscometer. The SC-CO2-methyl oleate system was evaluated at 313.15, 323.15 and 333.15 K and 11.5, 13.7 and 15.5 MPa, respectively. The SC-CO2-oleic acid system was evaluated at 313.15 K and 20.5 and 30.0 MPa and 333.15 K and 30.0 MPa. The increase in SC-CO2 viscosity was as high as 15-20% at the maximum methyl oleate concentrations (4-5 wt%) and 6...
SPECIFIC HEAT CAPACITY OF FLOWERLIKE ZnO-PMMA COMPOSITES INVESTIGATED BY DSC. Sezer, Selda (2017-04-01) A series flowerlike ZnO-PMMA (FL-ZnO-PMMA) composites were synthesized from PMMA and different amount of flowerlike ZnO (FL- ZnO) particles via the solution direct-dispersing and in-situ polymerization method. FL-ZnO particles have been synthesized using the hydrothermally technique. Effects of synthesis conditions on the crystal structure, crystallite size, microstructure and morphological properties of the produced FL-ZnO particles were investigated by FTIR, X-ray and SEM. The prepared ZnO nanostructures ...

Citation Formats

N. Horzum, E. Boyacı, A. E. Eroglu, T. Shahwan, and M. M. Demir, “Sorption Efficiency of Chitosan Nanofibers toward Metal Ions at Low Concentrations,” BIOMACROMOLECULES, pp. 3301–3308, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36921.