Kinetics of Isothermal Nicotine Adsorption from the Aqueous Solution onto the USY Zeolite

Abstract

The kinetics of isothermal adsorption of nicotine from an aqueous solution onto hydrophobic zeolite type USY was investigated. The adsorption isotherms of nicotine on zeolite type USY were measured in the temperature range from 298 to 322 K. Specific shape parameters of the adsorption degree curves were determined. The changes in the specific shape parameters of the adsorption degree curves with temperature and the kinetic parameters of nicotine adsorption (E a, ln A) were determined. The kinetic model of nicotine adsorption, [1 − (1 − α)1/2] = kt, was established by using the model-fitting method. It was found that the nicotine adsorption was a kinetically controlled process which was determined by the rate of bidimensional movement of the boundary layer of the adsorption phase. Nicotine is most probably chemisorbed onto the acidic centers of zeolite type USY.

Preparation of Low-Dielectric-Constant Kaolin Clay Ceramics by Chemical Cleaning Method

“…Kaolin clay, a mineral composed of hydrated aluminum silicates (i.e., [Al 4 (Si 4 O 10 ) (OH) 2 ]), is naturally abundant and used worldwide for various applications such as clay ceramics (Zhou et al, 2010), zeolites for nicotine adsorption (Lazarevic and Jovanovic 2010;Shen et al, 2013), asphaltene adsorption (Wang et al, 2013), and ceramics as insulating substrates (Viswabaskaran and Gnanam 2004). Kaolin clay is also relatively inexpensive (Gelin and Gueguen 1988;Xu et al, 1999;Xu et al, 2000).…”

Synthesis and properties of methacrylic acid based hydrogels modified with zeolites

“…modele kontrolisane promenama na granici faza. Ovaj rezultat ukazuje da je brzina sorpcije BY28 na hidrogelovima na bazi PMAA određena brzinom pomeranja graničnog sloja sorbovane boje koji je formiran na površinama zidova pora hidrogelova [291]. Na osnovu vrednosti konstanti brzine modela može da se konstatuje da je sorpcija na PMAA/80N hidrogelu mnogo brža, što je u skladu sa gore navedenim rezultatima.…”