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DETERMINATION OF CONCENTRATION-DEPENDENT ADSORBATE DIFFUSIVITIES BY NUMERICAL INVERSION

DSpace at IIT Bombay

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Title DETERMINATION OF CONCENTRATION-DEPENDENT ADSORBATE DIFFUSIVITIES BY NUMERICAL INVERSION
 
Creator ARVIND, G
BHATIA, SK
 
Subject activated-carbon particles
surface-diffusion
sorption
regularization
kinetics
gases
model
 
Description A new inverse problem approach is formulated for the determination of the concentration dependence of the diffusion coefficient from uptake data. A model based on Fick's law is assumed to hold for the process for which the governing partial differential equation, which has to be inverted, is ill-posed. The inversion is achieved using a combination of orthogonal collocation and regularization techniques. It is seen that it is possible to deduce the diffusivity-concentration relationship from a single uptake curve without any a priori knowledge of the form of the relationship. The application of the technique is demonstrated for both simulated data as well as actual experimental data for the uptake of iodine from the vapor phase by activated carbon. In all the cases considered, the method is seen to provide stable and convergent solutions, even when the data to be inverted are noisy.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-24T00:47:22Z
2011-12-26T12:56:40Z
2011-12-27T05:45:44Z
2011-08-24T00:47:22Z
2011-12-26T12:56:40Z
2011-12-27T05:45:44Z
1995
 
Type Article
 
Identifier CHEMICAL ENGINEERING SCIENCE, 50(8), 1361-1372
0009-2509
http://dx.doi.org/10.1016/0009-2509(95)98847-8
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10706
http://hdl.handle.net/10054/10706
 
Language en