title: Determination of gas phase adsorption isotherms--a simple constant volume method.
abstract: Single and ternary solute gas phase adsorption isotherms were conducted in this study to evaluate the effectiveness of a simple constant volume method, which was utilized by using Tedlar gas sampling bags as a constant volume batch reactor. For this purpose, gas phase adsorption of toluene, methyl ethyl ketone (MEK), and methyl isobutyl ketone (MIBK) on two types of activated carbons, BPL-bituminous base and OVC--coconut base, were investigated. For the single solute adsorption, the experimental adsorption data were found to be well correlated with Freundlich and Myers adsorption equations. The pore size distribution of adsorbents was found to affect their adsorption capacities; its effect was dependant on the solute concentration. The ternary adsorption experimental isotherms were accurately predicted by using the well-known model, i.e., ideal adsorbed solution theory (IAST).
authors.affiliation: Department of Civil and Environmental Engineering, University of Cincinnati, 765G Baldwin Hall, 45221-0071, USA.
authors.forename: Daekeun
authors.initials: D
authors.lastname: Kim
authors.forename: Zhangli
authors.initials: Z
authors.lastname: Cai
authors.forename: George A
authors.initials: GA
authors.lastname: Sorial
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000032:analysis*; D002074:Butanones / Q000032:analysis; D002606:Charcoal / Q000737:chemistry*; D005740:Gases / Q000032:analysis*; D008742:Methyl n-Butyl Ketone / Q000032:analysis; D008956:Models, Chemical; D013499:Surface Properties; D013816:Thermodynamics; D014050:Toluene / Q000032:analysis
chemical_list: D000393:Air Pollutants; D002074:Butanones; D005740:Gases; D002606:Charcoal; D014050:Toluene; C005222:methylethyl ketone; D008742:Methyl n-Butyl Ketone; C005458:methyl isobutyl ketone