Multicomponent sorption kinetics of hydrocarbons in activated carbon: Simultaneous desorption and displacement

Rao G.N., Hu X. and Do D.D. (1994) Multicomponent sorption kinetics of hydrocarbons in activated carbon: Simultaneous desorption and displacement. Gas Separation and Purification, 8 2: 67-76. doi:10.1016/0950-4214(94)80013-8


Author Rao G.N.
Hu X.
Do D.D.
Title Multicomponent sorption kinetics of hydrocarbons in activated carbon: Simultaneous desorption and displacement
Journal name Gas Separation and Purification
ISSN 0950-4214
Publication date 1994-01-01
Sub-type Article (original research)
DOI 10.1016/0950-4214(94)80013-8
Volume 8
Issue 2
Start page 67
End page 76
Total pages 10
Subject 1500 Chemical Engineering
2200 Engineering
Abstract Binary desorption and displacement kinetics of ethane and propane in Ajax activated carbon are studied in this paper to further understand the multicomponent adsorption of light hydrocarbons onto activated carbon. The experimental data are collected using a differential adsorption bed over a range of temperatures, bulk concentration combinations, particle sizes and shapes. A macropore, surface and micropore diffusion (MSMD) model recently proposed by Hu and Do (Chem Eng Sci (1993) 48 1317) is used in the analysis of experimental data. This model takes into account the concentration dependency of the surface diffusivity. Both diffusions of free and adsorbed species are allowed for in the theory. The adsorbed species are assumed to diffuse in the particle as well as in the microparticle (grain) coordinates. An imaginary gas-phase concentration concept is used to calculate the local diffusion flux of the adsorbed species inside the microparticle. The local multicomponent adsorption equilibrium at any point within the particle is calculated using the ideal adsorbed solution theory (IAST), with the single-component adsorption equilibrium data described by a Unilan equation.
Keyword activated carbon
diffusion
ideal adsorbed solution theory
multicomponent sorption kinetics
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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