Open AccessMathematical modeling of the ion exchange processes of sodium clinoptilolite with heavy metal ions from residual waters
Author(s) -
Claudia Cobzaru,
Spiridon Oprea
Publication year - 2005
Publication title -
chemical industry and chemical engineering quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.189
H-Index - 26
eISSN - 2217-7434
pISSN - 1451-9372
DOI - 10.2298/ciceq0504209c
Subject(s) - clinoptilolite , ion exchange , residual , sodium , metal , cation exchange capacity , ion , chemistry , process (computing) , inorganic chemistry , mathematics , environmental science , soil science , zeolite , computer science , algorithm , biochemistry , organic chemistry , soil water , catalysis , operating system
The ion-exchange capacity of volcanic tuff in the Na+ form (70% clinoptilolite content), used for removing heavy metals in residual waters, was investigated under different conditions (temperature, time and exchange solution concentration). These parameters are necessary and sufficient for the mathematical modeling of the ion-exchange process. The corresponding mathematical models show common characteristics due to the good arrangement of the experimental points on the response surfaces and correlation coefficients close to unity. Differences appear with respect to the shape of the response surface and model equations. .