Resins of chitosan microspheres (RCM) were prepared by using reverse phase suspension cross-linked polymerization. Static sorption experiments were carried out to study the adsorption kinetics and thermodynamics of tea polyphenols on RCM. The results indicated that the adsorption followed the Langmuir isotherm .The Langmuir equilibrium constant Kb increased with increasing temperature. The adsorption was a non-spontaneous endothermic process of increased entropy by studying thermodynamics of adsorption. The adsorption followed second-order kinetic equation. The adsorption rate of tea polyphenols on RCM was controlled by the intraparticle diffusion during the adsorption process.
LI Hai-yan
,
WANG Dsong-feng
,
Siaka. D
,
LIU Bing-jie
,
ZHANG Li
. Thermodynamics and Kinetics of Tea Polyphenols Adsorption onto Resins of Chitosan Microspheres[J]. Journal of Tea Science, 2009
, 29(4)
: 313
-318
.
DOI: 10.13305/j.cnki.jts.2009.4.011
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