The sorption of acid dye onto chitosan nanoparticles

The behavior of chitosan nanoparticles as an adsorbent to remove Acid Green 27 (AG27), an acid dye, from an aqueous solution has been investigated with nanochitosan (particle size=180nm; degree of deacetylation=74%). The dye concentration at equilibrium (Qe, mg/g) was calculated using the weight of...

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Bibliographic Details
Published in:Polymer (Guilford) 2006-07, Vol.47 (16), p.5838-5842
Main Authors: Hu, Z.G., Zhang, J., Chan, W.L., Szeto, Y.S.
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Chitosan nanoparticles
Exact sciences and technology
Langmuir equation
Natural polymers
Physicochemistry of polymers
Starch and polysaccharides
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Summary:The behavior of chitosan nanoparticles as an adsorbent to remove Acid Green 27 (AG27), an acid dye, from an aqueous solution has been investigated with nanochitosan (particle size=180nm; degree of deacetylation=74%). The dye concentration at equilibrium (Qe, mg/g) was calculated using the weight of the nanoparticles in the mixed solution (Qes) and the weight of chitosan in the nanoparticles (Qep). The experimental isotherm data were analyzed using the Langmuir equation for each chitosan sample; the Langmuir monolayer adsorption capacity (Q0) was calculated with Qes and Qep and the results were 1051.8mg/g and 2103.6mg/g, respectively, which were significantly higher than that of the micron-sized chitosan.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2006.05.071