Characterization and ethylene adsorption of natural and modified clinoptilolites |
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Authors: | Burcu Erdo?an Meryem Sak?zc? Ertu?rul Yörüko?ullar? |
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Institution: | Department of Physics, Science Faculty, Anadolu University, 26470 Eski?ehir, Turkey |
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Abstract: | The ethylene adsorption of Turkey clinoptilolite-rich tuff from Gordes and Bigadic region of western of Anatolia and their exchanged forms (K+, Na+ and Ca2+) were investigated. The clinoptilolite samples were characterized using XRD, TG-DTA and nitrogen adsorption methods. Adsorption isotherms for ethylene on natural and modified forms of both adsorbents at 277 K and 293 K were obtained at pressures up to 38 kPa. Uptake of ethylene increased as Na-CLN < Ca-CLN < K-CLN < Natural CLN for Gordes zeolite at 277 K, 293 K and for Bigadic zeolite at 277 K. For Bigadic zeolites at 293 K, uptake of ethylene increased in the order Ca-CLN < Na-CLN < K-CLN < Natural CLN. It was found that ethylene adsorption capacity of Bigadic clinoptilolite samples was much greater than Gordes clinoptilolite samples except K+ modified forms at both temperatures. These results show that both natural clinoptilolites have a considerable potential for the removal of ethylene. |
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Keywords: | 82 75 &minus z 68 43 &minus h 61 66 Hq 67 80 Gb 61 10 Nz |
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