Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12494
Title: Intraparticle diffusion processes during acid dye adsorption onto chitosan
Authors: Cheung, WH
Szeto, YS 
McKay, G
Keywords: Acid dyes
Adsorption
Chitosan
Diffusion
Intraparticle
Issue Date: 2007
Publisher: Elsevier
Source: Bioresource technology, 2007, v. 98, no. 15, p. 2897-2904 How to cite?
Journal: Bioresource technology 
Abstract: The adsorption of five acid dyes onto chitosan was studied. The equilibrium capacities based on the Langmuir analysis were 1.54, 2.66, 1.11, 1.25 and 1.03 mmol/g chitosan for Orange 10 (AO10), Acid Orange 12 (AO12), Acid Red 18 (AR18), Acid Red 73 (AR73) and Acid Green 25 (AG25) respectively. The batch adsorption rate for the five systems based on an intraparticle diffusion rate parameter derived from the plots of dye adsorbed versus the square root of time indicated that the adsorption mechanism was predominantly intraparticle diffusion but there was also a dependence on pore size as the dye diffuses through macropore, mesopore and micropore respectively.
URI: http://hdl.handle.net/10397/12494
ISSN: 0960-8524
EISSN: 1873-2976
DOI: 10.1016/j.biortech.2006.09.045
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