TY - JOUR
T1 - An Adsorption Equilibria Model for Steady State Analysis
AU - Ismail, Azhar bin
AU - Sabnani, Karan
AU - Ang, Li
AU - Ng, Kim Choon
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge the financial support for this project from the King Abdullah University of Science and Technology (Grant No. 7000000411) and the National
Research Foundation Singapore (Grant WBS No. R-265-000-466-281).
PY - 2016/2/29
Y1 - 2016/2/29
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/600683
UR - http://www.ijtech.eng.ui.ac.id/index.php/journal/article/view/2970
U2 - 10.14716/ijtech.v7i2.2970
DO - 10.14716/ijtech.v7i2.2970
M3 - Article
SN - 2087-2100
VL - 7
SP - 274
JO - International Journal of Technology
JF - International Journal of Technology
IS - 2
ER -