Adsorption of nicotine on different zeolite types, from aqueous solutions
2007
Stosic, D.K., Univerzitet u Beogradu, Beograd (Serbia). Fakultet za fizicku hemiju | Dondur, V.T., Univerzitet u Beogradu, Beograd (Serbia). Fakultet za fizicku hemiju | Rac, V.A., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet | Rakic, V.M., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet | Zakrzewska, J.S., Institut za opstu i fizicku hemiju, Beograd (Serbia)
In this work, the removal of nicotine has been probed by adsorption on solid materials. Adsorption of nicotine on different zeolites (clinoptilolite, ZSM-5 nad beta zeolite) and on activated carbon was investigated from aqueous solutions, at 298 K. The obtained results are presented as adsorption isotherms: the amount of adsorbed nicotine as a function of equilibrium concentration. These data were obtained from the residual amount of nicotine in the aqueous phase, by the use of UV spectroscopy. In addition, the adsorption of nicotine on ZSM-5 zeolite with different Si/Al ratios has been done. It has been noticed that ion-exchange did not improve the adsorption possibilities, while the adsorption was importantly lower in the case of higher silicon content in ZMS-5 structure. 3C NMR spectra were collected for suspensions formed of solid adsorbent and aqueous solution of nicotine; in this way, the part of nicotine molecule which is most probably connected with the adsorbent was recognized.
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