Preparation and adsorption properties of diethylenetriamine‐modified chitosan beads for acid dyes

Yan, Yikai; Xiang, Bin; Li, Yijiu; Jia, Qingxuan

doi:10.1002/app.39691

Cited by 19 publications

(5 citation statements)

References 40 publications

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“…Yan et al . studied a more complex adsorption phenomenon, in which two model dyes (AO7 and AG25) were competitively adsorbed onto beads of chitosan grafted with diethylenetriamine . The Langmuir and Freundlich equations were run for fitting.…”

Section: Discussionmentioning

confidence: 99%

Chitosan adsorbents for dye removal: a review

2017

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One of the most important decontamination techniques is considered to be adsorption. It is fast, simple, low cost with many opportunities to modify the initial materials after appropriate synthesis routes etc. Numerous adsorbent materials have been prepared in the last few years having as the ultimate scope to remove some pollutants especially from contaminated waters (effluents originating from industry). But the composition of each type of effluent varies. Dyes are some major components of industrial wastewaters. Chitosan (poly--(1 → 4)-2-amino-2-deoxy-D-glucose) is a nitrogenous (amino-based) polysaccharide which is produced in large quantities by N-deacetylation of (its source compound) chitin. The major advantage of chitosan is the existence of modifiable positions in its chemical structure. Modification of the chitosan molecule by (i) grafting (inserting functional groups) or (ii) crosslinking reactions (uniting the macromolecular chains with each other) leads to the formation of chitosan derivatives with superior properties (enhancement of adsorption capacity and resistance in extreme medium conditions, respectively). This review summarizes the important contribution of chitosan derivatives to the dye removal process by adsorption.

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Section: Discussionmentioning

confidence: 99%

Chitosan adsorbents for dye removal: a review

2017

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“…Yan et al studied a more complex adsorption phenomenon, in which two model dyes (AO7 and AG25) were competitively adsorbed onto beads of chitosan grafted with diethylenetriamine [ 41 ]. Langmuir and Freundlich equations were run for fitting.…”

Section: Modified Chitosans For Dye Adsorptionmentioning

confidence: 99%

Recent Modifications of Chitosan for Adsorption Applications: A Critical and Systematic Review

2015

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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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“…The CTSN‐beads is prepared according to our previous research . First, a chitosan solution was prepared by dissolving 4 g chitosan flakes into 96 g of a 4% (m/m) acetic acid solution.…”

Section: Methodsmentioning

confidence: 99%

“…It is an effective way to enhance the adsorption of chitosan by introducing more amino groups. In our previous work, porous chitosan beads were synthesized by grafting diethylenetriamine on the surface of chitosan; the results showed that modified chitosan has excellent adsorption efficiency in terms of acid dye molecules …”

Section: Introductionmentioning

confidence: 99%

Competitive adsorption of acid dyes from aqueous solution on diethylenetriamine‐modified chitosan beads

Yan

Xiang

et al. 2014

J of Applied Polymer Sci

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The interaction between two dyes (AO7 and AG25) during adsorption was studied in detail with diethylenetriamine‐modified chitosan beads (CTSN‐beads) as the adsorbent. Results indicate that the adsorption capacities and rates were directly related to the molecular size of the dye. The adsorption capacity and rate of AO7 could be greatly weakened by interaction with AG 25 during adsorption, which has a larger molecular size. The adsorption followed the pseudo‐second‐order kinetic equation and Freundlich model gave a satisfying correlation with the equilibrium data both in the single and binary component system. Adsorption could be divided into three stages, each controlled by different mechanisms. Temperature experiments showed high temperature was beneficial to the mass transfer of dyes. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41168.

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Preparation and adsorption properties of diethylenetriamine‐modified chitosan beads for acid dyes

Cited by 19 publications

References 40 publications

Chitosan adsorbents for dye removal: a review

Chitosan adsorbents for dye removal: a review

Recent Modifications of Chitosan for Adsorption Applications: A Critical and Systematic Review

Competitive adsorption of acid dyes from aqueous solution on diethylenetriamine‐modified chitosan beads

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