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Citation: MA Xiao-Li, YAO Zi-Hua, SHI Da-Ganga, XU Wei-Wei. Preparation of Porous Chitosan Membranes and Adsorption of Free Chloride in Water by Them[J]. Chinese Journal of Applied Chemistry, ;2005, 22(11): 1214-1219. shu

Preparation of Porous Chitosan Membranes and Adsorption of Free Chloride in Water by Them

MA Xiao-Li ^a,b ,
YAO Zi-Hua ^a,, ,
SHI Da-Ganga ^a ,
XU Wei-Wei ^a

1.
a College of Chemistry and Environmental Science, Hebei University;Hebei Province, Analytical Science and Technology Key Laboratory, Baoding 071002;
2.
b Hebei Medical College for Continuing Education, Baoding

Corresponding author: YAO Zi-Hua,
Received Date: 26 December 2004
Available Online: 26 March 2005
Fund Project: 河北省自然科学基金资助项目(196061) (196061)

A novel method was developed to prepare porous chitosan membranes with dibutyl phthalate as the porogen.The structure and performances of the porous chitosan membranes were examined by means of SEM,FTIR and BET method.The isothermal sorption kinetics of porous chitosan membranes for free chloride in water was investigated.The porous chitosan membranes prepared with dibutyl phthalate as porogen possess bigger porosity and specific surface area.The biggest water adsorption,porosity and specific surface area are respectively 196%,71.5% and 1.047 2 m²/g,and the biggest specific surface area is 5.52 times that of no-porous membrane.The porous chitosan membranes has a higher adsorption capacity for free chloride.The apparent sorption rate k are 0.232,0.194 and 0.136 min^-1 respectively at 15℃,25℃,35℃.
- porous chitosan membrane,
- free chloride,
- adsorption kinetics
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