Adsorption and desorption of gaseous sorbates on a bidispersed particle with Freundlich isotherm. II. Experimental study of sulphur dioxide sorption on activated carbon particles

Gray P.G. and Do D.D. (1989) Adsorption and desorption of gaseous sorbates on a bidispersed particle with Freundlich isotherm. II. Experimental study of sulphur dioxide sorption on activated carbon particles. Gas Separation and Purification, 3 4: 201-208. doi:10.1016/0950-4214(89)80006-4


Author Gray P.G.
Do D.D.
Title Adsorption and desorption of gaseous sorbates on a bidispersed particle with Freundlich isotherm. II. Experimental study of sulphur dioxide sorption on activated carbon particles
Journal name Gas Separation and Purification
ISSN 0950-4214
Publication date 1989-01-01
Sub-type Article (original research)
DOI 10.1016/0950-4214(89)80006-4
Open Access Status Not Open Access
Volume 3
Issue 4
Start page 201
End page 208
Total pages 8
Subject 1500 Chemical Engineering
Abstract A single particle sorption model based on bimodal (macropore plus micropore) diffusion control with a non-linear (Freundlich) isotherm acting at the micropore mouth, was applied to experimentally determined adsorption and desorption of SO2 on activated carbon. The model was fitted to experimental adsorption uptake curves (for carbon particles of various sizes and geometries) at 5 mol% SO2 and 25°C, which gave diffusivities Gp = 0.10 cm2 s-1 (macropore) and G/Rgm 2 = 0.017 s--1 (micropore), and a macropore tortuosity factor of τM = 3.0. Subsequently, these diffusivities were used in the model to simulate sorption curves at conditions different to that used for extracting Gp and G/Rμ 2. These simulations were done for the experimental conditions of adsorption on various particle sizes/ geometries with SO2 at lower concentrations (<5 mol%), and desorption from particles of various sizes/geometries with various initial loadings of SO2 sorbate. These model predictions were found to have satisfactory agreement with the experimental data, showing the validity of the theoretical model.
Keyword activated carbon
adsorption
bidispersed sorbent
desorption
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

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