地质学报（英文版）2006，Vol.80Issue(2)：243-248,6.
Diffusion Kinetics of Carbonate Hydroxyapatite (CHAP) for Adsorbing F- Dissolved in Water
Diffusion Kinetics of Carbonate Hydroxyapatite (CHAP) for Adsorbing F- Dissolved in Water
摘要
Abstract
A systematic research was performed about diffusion kinetics of adsorbing F- dissolved in water for carbonate hydroxyapatite (CHAP) from the natural hydroxyapatite which was modified by adulterating with CO32-. The result shows that the speed of F- adsorption is controlled by membrane diffusion when F- concentration is relatively low, which is expressed by the kinetic equation of diffusion Q=0.0005(Ci-C)(t-ti)+0.3967, or by vacancy diffusion when F- concentration is relatively high, which is expressed by the kinetic equation of diffusion In[C(o, t)]=8.4718-0.5048Int. Based on the feature of CHAP for adsorbing F- dissolved in water and its special channel of the structure of CO32-- modified hydroxyapatite, models of vacancy diffusion and membrane diffusion were established.关键词
carbonate hydroxyapatite (CHAP)/F- ion/diffusion/kineticsKey words
carbonate hydroxyapatite (CHAP)/F- ion/diffusion/kinetics分类
天文与地球科学引用本文复制引用
HUANG Zhiliang,ZHANG Lianmeng,LIU Yu,WANG Qilin,HE Qianjun,CHEN Wei..Diffusion Kinetics of Carbonate Hydroxyapatite (CHAP) for Adsorbing F- Dissolved in Water[J].地质学报（英文版）,2006,80(2):243-248,6.基金项目
This study was supported by the key scientific foundation (No. 2001Z20004) granted by the Hubei Provincial Department of Education and the natural science foundation (2005ABA024) by the Hubei Provincial Science and Technology Department. （No. 2001Z20004）
