Transport of Malathion in Homogeneous Soil Liquid Chromatographic Columns: Influence of Nonequilibrium Sorption

2009 ◽  
Vol 8 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Ya-qi Tao ◽  
Xin Jiang ◽  
Yong-rong Bian ◽  
Xing-lun Yang ◽  
Fang Wang
Keyword(s):  
Chromatographic Columns ◽  
Homogeneous Soil ◽  
Liquid Chromatographic ◽  
Nonequilibrium Sorption

scholarly journals A linearized non-isothermal general rate model for studying thermal effects in liquid chromatographic columns

2020 ◽  
pp. 336-336
Author(s):  
Nadia Kiran ◽  
Sadia Perveen ◽  
Seemab Bashir ◽  
Shamsul Qamar
Keyword(s):  
Differential Equations ◽  
Numerical Test ◽  
Fixed Bed ◽  
Packed Bed ◽  
Eigenvalue Decomposition ◽  
Finite Volume Scheme ◽  
Rate Model ◽  
Chromatographic Columns ◽  
Liquid Chromatographic ◽  
The Impact

A linearized non-isothermal general rate model is formulated and analytically solved to quantify the effects of temperature variations in fixed-bed chromatographic columns. The model contains a set of four coupled partial differential equations (PDEs) accounting for energy transfer resistances, inner and outer particle-pore diffusions, and interfacial mass and axial dispersion. The Laplace transform, the eigenvalue-decomposition technique, and a conventional technique for the solutions of ordinary differential equations (ODEs) are jointly employed for the solution of the model equations. A few numerical test studies are considered to assess the impact of system parameters on the performance of packed-bed adsorption columns. To access the range of applicability and to get the scope of the appropriateness of calculated analytical results, the numerical results are also obtained by applying a high resolution finite volume scheme (HR-FVS). The analytical solutions obtained can be used as an invaluable tool for analyzing, optimizing, and upgrading the non-isothermal liquid chromatographic procedures.

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