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Cite as: Rev. Chim.
https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
ISSN Online 2668-8212
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Revista de Chimie (Rev. Chim.), Year 2014, Volume 65, Issue 6,





CLAUDIA MARIA SIMONESCU, IRINA MARIN, CHRISTU TARDEI, VIRGIL MARINESCU, OVIDIU OPREA, CAMELIA
Chitosan and Chitosan Modified with Glutaraldehyde Microparticles for Pb(II) Biosorption. I. Microparticles preparation and characterization

Abstract:

This paper presents the physical and chemical changes in chitosan flakes, having as purpose the improving of mechanical strength, and the enhancing of the resistance of chitosan against acid, alkali and other chemicals. These changes led to obtaining chitosan and cross-linked with glutaraldehyde (GLA) chitosan microparticles, by means of a simple and versatile method, for use in the retention of Pb(II) ions from aqueous solutions. Chitosan and chitosan-GLA particles obtained were analyzed by FT-IR spectroscopy, Scanning Electron Microscopy (SEM) and TG/DSC. Stability of chitosan, and chitosan-GLA particles in media with different pH values was tested. Porous microparticles with high stability in acid solutions were obtained by cross-linking of chitosan with GLA. Keywords: chitosan microparticles, chitosan-GLA microparticles, physical and chemical


Issue: 2014, Volume 65, Issue 6
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