DOI: 10.1016/j.jcou.2017.07.018
Scopus记录号: 2-s2.0-85026758464
论文题名: Kinetics modeling of adsorption and desorption of benzaldehyde and benzyl alcohol on polymeric resin in supercritical CO2
作者: Yang X. ; Li Y. ; Lira C.T.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 253
结束页码: 260
语种: 英语
英文关键词: Adsorption
; Benzaldehyde
; Benzyl alcohol
; Desorption
; Kinetics model
; Supercritical carbon dioxide
Scopus关键词: Adsorption
; Carbon dioxide
; Desorption
; Diffusion
; Diffusion in liquids
; Effluent treatment
; Kinetics
; Lanthanum compounds
; Mass transfer
; Polymers
; Porous materials
; Resins
; Supercritical fluids
; Adsorption and desorptions
; Adsorption/desorption kinetics
; Benzaldehyde
; Benzyl alcohol
; Intraparticle diffusion coefficients
; Kinetics modeling
; Operational conditions
; Supercritical carbon dioxides
; Supercritical fluid extraction
英文摘要: In this work, a kinetics model was developed for the adsorption and desorption processes of benzaldehyde and benzyl alcohol on the polymeric resin adsorbent in supercritical carbon dioxide (scCO2). This kinetics model takes into account adsorption equilibrium, internal diffusion in porous medium, mass transfer between fluid-sold interfaces, and axial dispersion in supercritical fluid. The breakthrough curves measured in a fixed-bed have been fitted by this model under various operational conditions. This model uses the intraparticle diffusion coefficient as the fitting parameter and other transfer parameters can be calculated through current correlation equations. A satisfactory agreement between the modeling results and the experimental data has been obtained with just one fitting parameter. The effect of temperature, pressure, and concentration on the intraparticle diffusion coefficient has been investigated and the molecular pore diffusion within the solid adsorbent is found to be the rate-controlling step for the overall adsorption process. Moreover, the theoretical model has also been demonstrated to reasonably predict the desorption behavior for the two solutes in scCO2. Our work presents an effective and concise theoretical framework for adsorption/desorption kinetics in scCO2 fluid. © 2017 Elsevier Ltd. 资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52669
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Yang X.,Li Y.,Lira C.T.. Kinetics modeling of adsorption and desorption of benzaldehyde and benzyl alcohol on polymeric resin in supercritical CO2[J]. Journal of CO2 Utilization,2017-01-01,21