Modelling large mass removal in adsorption columns

被引：0
作者：
Myers, T. G. [1 ]
Calvo-Schwarzwalder, M. [1 ]
Font, F. [2 ]
Valverde, A. [3 ]
机构：
[1] Ctr Recerca Matemat, Edifici C,Campus Bellaterra, Bellaterra 08193, Spain
[2] Univ Politecn Catalunya BarcelonaTech, Dept Fluid Mech, Escola Engn Barelona Est, Barcelona 08019, Spain
[3] Univ Politecn Catalunya BarcelonaTech, Dept Chem Engn, Escola Super Enginyeries Ind Aerosp & Audiovisual, Terrassa 08222, Spain
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2025年 / 163卷
关键词：
Contaminant removal; Pollutant removal; Adsorption; Fluid dynamics; Mathematical model; FIXED-BED ADSORPTION; CARBON-DIOXIDE; ACTIVATED CARBON; KINETICS; CO2; MIXTURES; CAPTURE;
D O I：
10.1016/j.icheatmasstransfer.2025.108652
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A novel mathematical model is developed to describe column adsorption when the contaminant constitutes a significant amount of the fluid. This requires tracking the variation of pressure and velocity, in addition to the usual advection-diffusion-adsorption and kinetic equations describing concentration and adsorption rates. The model goes beyond previous work, based on a simple linear kinetic equation, to include both physical and chemical adsorption. Using rigorous mathematical techniques we are able to simplify the governing equations to obtain an approximate analytical solution. The advantage of such analytical solutions is that the effect of system parameters on the behaviour is clearly defined and, in this case, only a single unknown needs to befitted to the data. The simplicity of the solution is advantageous when testing new configurations and optimising operating conditions. Fitting a single unknown from an explicit expression is significantly more efficient than fitting multiple parameters to the base system of equations. The analytical solution shows excellent agreement with breakthrough data for multiple experiments. For the most extreme case of 69% CO2 our model had a Sum of Squares Error of 0.01 and an R2 = 0.99, compared to values 4.8, 0.94 for the standard constant velocity model.
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页数：15
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