The adsorption of fluoride ion from aqueous solution by activated alumina

Authors
Citation
Y. Ku et Hm. Chiou, The adsorption of fluoride ion from aqueous solution by activated alumina, WATER A S P, 133(1-4), 2002, pp. 349-360
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
WATER AIR AND SOIL POLLUTION
ISSN journal
0049-6979 → ACNP
Volume
133
Issue
1-4
Year of publication
2002
Pages
349 - 360
Database
ISI
SICI code
0049-6979(200201)133:1-4<349:TAOFIF>2.0.ZU;2-#
Abstract
The adsorption of fluoride ion in aqueous solution by using alumina was stu died in this research. The experimental results indicated that the removal efficiency was influenced significantly by solution pH and the optimum oper ating pH was found to be in the range of 5 to 7. For neutral and acidic sol utions, the adsorption capacities of fluoride by alumina was interfered by the presence of sulfate. The Langmuir and Freundlich isotherms can well des cribe the equilibrium behaviors of the adsorption processes. The experiment ally determined low values of activation energy indicate nonspecific adsorp tion is the predominant mechanism. The surface reaction-limiting batch kine tic model can adequately describe the removal behaviors of fluoride ion by alumina adsorption in the batch system.