engleski

The effect of initial zinc concentration and coagulant dose on zinc removal from aqueous solutions

This paper presents the prediction of breakthrough curves for the fixed bed column based on batch studies. Batch studies of lead removal on natural zeolite clinoptilolite have been performed. The obtained experimental data have been tested according to the Langmuir and Freundlich isotherms, and their parameters have been calculated. These parameters and the Mass Transfer Model have been used to predict theoretical breakthrough curves. Theoretical breakthrough curves have been compared with the experimental ones and a good agreement has been observed. This indicates that the Mass Transfer Model is applicable for prediction of breakthrough curves from batch studies. The overall mass transfer coefficient has been calculated from column experiments. This value allows for calculation of the height of the mass transfer zone as a very important parameter necessary for the column design

precipitation ; coagulation/flocculation ; zinc removal ; coagulant dose

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