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Recent modifications of chitosan for adsorption applications: a critical and systematic review.

Kyzas GZ, Bikiaris DN - Mar Drugs (2015)

Bottom Line: These functional groups can help in establishing positions for modification.Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups.This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Polymer Chemistry and Technology, Division of Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece. drkyzas@chem.auth.gr.

ABSTRACT
Chitosan is considered to be one of the most promising and applicable materials in adsorption applications. The existence of amino and hydroxyl groups in its molecules contributes to many possible adsorption interactions between chitosan and pollutants (dyes, metals, ions, phenols, pharmaceuticals/drugs, pesticides, herbicides, etc.). These functional groups can help in establishing positions for modification. Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups. This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

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Chemical structure of the modified chitosan resin [33].
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marinedrugs-13-00312-f002: Chemical structure of the modified chitosan resin [33].

Mentions: A study of Elwakeel et al. describes the preparation of a resin based on chitosan and glutaraldehyde [33]. The chemical modification was chemically achieved using NH4OH for producing the resin, which was then cross-linked with epichlorohydrine. This reaction took place between hydroxyl groups of chitosan molecules. The resultant resin was further modified with 3-amino-1,2,4 triazole,5-thiol to synthesize the final resin (Figure 2). The resin was prepared for binding/removing a cationic dye (BBR250) from aqueous media.


Recent modifications of chitosan for adsorption applications: a critical and systematic review.

Kyzas GZ, Bikiaris DN - Mar Drugs (2015)

Chemical structure of the modified chitosan resin [33].
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4306939&req=5

marinedrugs-13-00312-f002: Chemical structure of the modified chitosan resin [33].
Mentions: A study of Elwakeel et al. describes the preparation of a resin based on chitosan and glutaraldehyde [33]. The chemical modification was chemically achieved using NH4OH for producing the resin, which was then cross-linked with epichlorohydrine. This reaction took place between hydroxyl groups of chitosan molecules. The resultant resin was further modified with 3-amino-1,2,4 triazole,5-thiol to synthesize the final resin (Figure 2). The resin was prepared for binding/removing a cationic dye (BBR250) from aqueous media.

Bottom Line: These functional groups can help in establishing positions for modification.Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups.This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Polymer Chemistry and Technology, Division of Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece. drkyzas@chem.auth.gr.

ABSTRACT
Chitosan is considered to be one of the most promising and applicable materials in adsorption applications. The existence of amino and hydroxyl groups in its molecules contributes to many possible adsorption interactions between chitosan and pollutants (dyes, metals, ions, phenols, pharmaceuticals/drugs, pesticides, herbicides, etc.). These functional groups can help in establishing positions for modification. Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups. This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

Show MeSH