Dynamic Drying of Liquids with Zeolite-A Synthesized from Halloysite

Adsorptive drying of hydrocarbon liquids

“…The model appears to be useful for adsorptive drying with ion-exchange resins. The model fit to the data published by Goto et al (1972) was also very good. Further validation work is reported below.…”

“…Information on breakthrough is even more limited than that on isotherms. Gehrhardt et al (1967), Goto et al (1972), Stuckhov et al (1975), Suzuki and Monoi (1976), Moseman and Bird (1982), and Teo and Ruthven (1986) have published some breakthrough data. Joshi and Fair (1988) were able to fit their breakthrough curves with a valid mechanistic model.…”

Adsorptive drying of toluene

“…Several other authors (Ruthven, 1984;Teo and Ruthven, 1986; Prasher and Ma, 1977) have concluded that for liquid-phase adsorption intraparticle transport offers the controlling resistance to mass transfer. Breakthrough data presented by Goto et al (1972Goto et al ( , 1986) also confirm that intraparticle diffusion was controlling.…”

“…The temperature of adsorption was 25 °C. Flow velocities were typically in the range used by other workers (Goto et al, 1972(Goto et al, ,1986; Teo and Ruthven, 1986). Contact times of 5-10 min, as recommended by the desiccant manufacturers, were found to be impractical.…”

“…Thus, the calculated vapor isotherm should represent the generalized moisture uptake isotherm on a particular molecular sieve from all nonadsorbable solvents. Actually, many of the reported moisture uptake isotherms from liquid solvents differ substantially from the calculated vapor isotherm (Goto et al, 1972;Selin et al, 1964;Stuchkov, 1975;Varga and Beyer, 1967). The data reported by these authors on 4A molecular sieves were compiled and analyzed by Basmadjian (1984).…”