Open AccessSorption Properties of the Natural, K and Partially Deammoniated (H/NH4) Forms of Clinoptilolite
Author(s) -
M.W. Kasture,
P.N. Joshi,
H.S. Sorti,
Virendra Joshi,
A. L. Choudhari,
V. P. Shiralkar
Publication year - 1998
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749801600207
Subject(s) - clinoptilolite , sorption , chemistry , adsorption , nuclear chemistry , ion exchange , inorganic chemistry , zeolite , mineralogy , organic chemistry , ion , catalysis
A sample collected from the Aurangabad District, Maharashtra, India was characterized by XRD, IR, TG and DTA methods, and by chemical analysis, as a calcium-rich clinoptilolite. Two different methods involving exchange with KOH or NH 4 Cl led to the formation of K-clinoptilolite (K-Clino) and H/NH 4 -clinoptilolite (H/NH 4 -Clino). Water sorption studies were carried out on the parent clinoptilolite (P-Clino), K-Clino and H/NH 4 -Clino at five different temperatures in the range 303–423 K. Different adsorption models were applied to the data obtained from such sorption studies. Thermodynamic parameters such as the chemical potential were also computed from the sorption data and their significance is discussed.