Kinetics of proton transfer in the zeolitic tuff |
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Authors: | Fehime Çakıcıoğlu-Özkan İlker Polatoğlu |
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Institution: | (1) Chemical Engineering Department, İzmir Institute of Technology, Gulbahce Koyu, 35430 Urla-İzmir, Turkey |
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Abstract: | The kinetics of a proton transfer into dilute acid solutions containing natural zeolitic tuff was studied by following the
pH evolution of the liquid phase. Four different solutions with tuff contents of 9, 3, 1 and 0.5 (% wt) and three different
particle size fractions (≤ 2000 μm) were studied. The proton concentration of the solution was decreased by increasing the
zeolite amount and decreasing the particle size fraction. The proton transfer reaction was analyzed with chemical reactions
and diffusion model equations. Analysis shows that the adsorption and/or ion exchange are possible mechanisms and are expressed
by a second order reaction model. |
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Keywords: | Zeolite tuff Clinoptilolite Particle size Proton diffusion |
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