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The aim of this research paper is to present a simple and efficient method to prepare zeolite materials from thermal power plant fly ash which is one of the most important waste resulted from power plants. The method of preparation of zeolite materials consists of alkaline activation followed by calcination at different temperatures. The zeolite ma...
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... constants of these models were found through a regression analysis over the acquired experimental data. The plots showing the match between the experimental data and the models are presented in the Figures 8-10 and the regression analysis results are presented in the Table 7. pH value = 5.91; temperature = 20±2°C) Figure 13 reveals that for all zeolite tested materials, it is possible to draw two lines from the graphical representation of Qt versus t 0.5 which can lead to the conclusion that the studied adsorption process could take place in two steps: the external diffusion followed by the intraparticle diffusion. Due to the fact that the lines do not pass through the origin, it can be concluded that the adsorption process of the Cd(II) ions on the zeolite prepared materials can't be modeled using the kinetic diffusion intraparticle model. ...
