title: Two-dimensional modeling of volatile organic compounds adsorption onto beaded activated carbon.
abstract: A two-dimensional heterogeneous computational fluid dynamics model was developed and validated to study the mass, heat, and momentum transport in a fixed-bed cylindrical adsorber during the adsorption of volatile organic compounds (VOCs) from a gas stream onto a fixed bed of beaded activated carbon (BAC). Experimental validation tests revealed that the model predicted the breakthrough curves for the studied VOCs (acetone, benzene, toluene, and 1,2,4-trimethylbenzene) as well as the pressure drop and temperature during benzene adsorption with a mean relative absolute error of 2.6, 11.8, and 0.8%, respectively. Effects of varying adsorption process variables such as carrier gas temperature, superficial velocity, VOC loading, particle size, and channelling were investigated. The results obtained from this study are encouraging because they show that the model was able to accurately simulate the transport processes in an adsorber and can potentially be used for enhancing absorber design and operation.
authors.affiliation: University of Alberta , Department of Civil and Environmental Engineering, Edmonton, AB T6G 2W2, Canada.
authors.forename: Dereje Tamiru
authors.initials: DT
authors.lastname: Tefera
authors.forename: Masoud
authors.initials: M
authors.lastname: Jahandar Lashaki
authors.forename: Mohammadreza
authors.initials: M
authors.lastname: Fayaz
authors.forename: Zaher
authors.initials: Z
authors.lastname: Hashisho
authors.forename: John H
authors.initials: JH
authors.lastname: Philips
authors.forename: James E
authors.initials: JE
authors.lastname: Anderson
authors.forename: Mark
authors.initials: M
authors.lastname: Nichols
mesh_terms: D000327:Adsorption; D001554:Benzene / Q000032:analysis; D002606:Charcoal / Q000737:chemistry*; D005740:Gases / Q000737:chemistry; D008962:Models, Theoretical; D010316:Particle Size; D011312:Pressure; D013696:Temperature; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D005740:Gases; D055549:Volatile Organic Compounds; D002606:Charcoal; D001554:Benzene