Zeolitic adsorption in course of pollutants mitigation and environmental control |
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Authors: | Eva Chmielewská |
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Institution: | 1. Department of Environmental Ecology, Faculty of Natural Sciences, Comenius University, Mlynská dolina B2, 842 15, Bratislava, Slovak Republic
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Abstract: | The review focuses on the adsorption and selectivity properties of the inland natural zeolites clinoptilolite and mordenite towards a broad spectrum of environmental pollutants incl. radioactive and compare some of them partially to selected foreign samples. A series of elution experiments into a broad spectrum of individual isomolar metal solutions by means of NH4 +—exchanged clinoptilolite—and mordenite-rich tuffs was done to prove the affinity sequence of both minerals untill the steady-state approaching. Among the all recorded breakthrough profiles onto mordente-rich tuff the ammonium exchanged tuff yielded the best uptake performance towards Cs. Three various clinoptilolite-rich tuff samples (Hungarian, American and Slovakian) were compared to each other in order to evaluate the iodide removal in dynamic regime by using the Ag exchanged tuff. |
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