Chemical Industry and Chemical Engineering Quarterly 2005 Volume 11, Issue 4, Pages: 209-212
doi:10.2298/CICEQ0504209C
Full text ( 229 KB)


Mathematical modeling of the ion exchange processes of sodium clinoptilolite with heavy metal ions from residual waters

Cobzaru Claudia, Oprea Spiridon

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. .

Keywords: ion exchange, natural clinoptilolite, mathematical models

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