AN ADSORPTION EQUILIBRIA MODEL FOR STEADY STATE ANALYSIS

被引:0
作者
Bin Ismail, Azhar [1 ]
Sabnani, Karan M. [1 ]
Ang, Li [2 ]
Ng, Kim Choon [1 ]
机构
[1] 4700 King Abdullah Univ Sci & Technol, Water Desalinat & Reuse Ctr, Thuwal 239556900, Saudi Arabia
[2] Natl Univ Singapore, Fac Engn, Dept Mech Engn, 9 Engn Dr 1, Singapore 117576, Singapore
基金
新加坡国家研究基金会;
关键词
Adsorption; Energy distribution function; Statistical rate theory; Universal isotherm model;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The investigation of adsorption isotherms is a prime factor in the ongoing development of adsorption cycles for a spectrum of advanced, thermally-driven engineering applications, including refrigeration, natural gas storage, and desalination processes. In this work, a novel semi-empirical mathematical model has been derived that significantly enhances the prediction of the steady state uptake in adsorbent surfaces. This model, a combination of classical Langmuir and a novel modern adsorption isotherm equation, allows for a higher degree of regression of both energetically homogenous and heterogeneous adsorbent surfaces compared to several isolated classical and modern isotherm models, and has the ability to regress isotherms for all six types under the IUPAC classification. Using a unified thermodynamic framework, a single asymmetrical energy distribution function (EDF) has also been proposed that directly relates the mathematical model to the adsorption isotherm types. This fits well with the statistical rate theory approach and offers mechanistic insights into adsorption isotherms.
引用
收藏
页码:274 / 280
页数:7
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