Analytical resolution of a cyclic two‐way chromatographic binary system
Identifieur interne : 000479 ( Istex/Checkpoint ); précédent : 000478; suivant : 000480Analytical resolution of a cyclic two‐way chromatographic binary system
Auteurs : C. Castel [France] ; M. Sardin [France] ; M. O. Simonnot [France]Source :
- AIChE Journal [ 0001-1541 ] ; 2002-02.
English descriptors
- KwdEn :
- Aiche, Aiche journal, Analytical solution, Analytical solutions, Asymptotic, Asymptotic concentration profiles, Asymptotic profile, Asymptotic profiles, Binary system, Castel, Chem, Chloride, Chloride composition, Chloride profile, Composition velocity discontinuity, Concentration profile, Concentration profiles, Critical ratio, Cyclic, Dharmashankar subramanian, Discontinuity point, Discrete function, Discrete values, Elution, Elution solution, Elution solutions, Elution step, Elution steps, Equilibrium theory, February, Feed solution, Feed step, First elution step, Flow reversal, Fluoride ions, Full line, Hydrogen carbonate, Iterative calculation, Liquid phase, Local equilibrium theory, Mass balance, Multicomponent, Multicomponent chromatography, Nlimit, Normality, Numerical series, Periodic state, Pressure swing adsorption, Propagation velocity, Saturation step, Scomposition velocity, Selective removal, Sionic fraction, Slongitudinal position, Solid phase, Steady state, Theoretical limit, Thousandth cycle, Tondeur, Total normality.
- Teeft :
- Aiche, Aiche journal, Analytical solution, Analytical solutions, Asymptotic, Asymptotic concentration profiles, Asymptotic profile, Asymptotic profiles, Binary system, Castel, Chem, Chloride, Chloride composition, Chloride profile, Composition velocity discontinuity, Concentration profile, Concentration profiles, Critical ratio, Cyclic, Dharmashankar subramanian, Discontinuity point, Discrete function, Discrete values, Elution, Elution solution, Elution solutions, Elution step, Elution steps, Equilibrium theory, February, Feed solution, Feed step, First elution step, Flow reversal, Fluoride ions, Full line, Hydrogen carbonate, Iterative calculation, Liquid phase, Local equilibrium theory, Mass balance, Multicomponent, Multicomponent chromatography, Nlimit, Normality, Numerical series, Periodic state, Pressure swing adsorption, Propagation velocity, Saturation step, Scomposition velocity, Selective removal, Sionic fraction, Slongitudinal position, Solid phase, Steady state, Theoretical limit, Thousandth cycle, Tondeur, Total normality.
Abstract
The focus is on analytical resolution of the mass‐balance relation in the case of a binary ion‐exchange system containing chloride and hydrocarbonate anions involved in a two‐way chromatographic cyclic process under critical operating conditions, that is, feed and elution solutions with the same total normality and percolation volumes. Local equilibrium theory is used to demonstrate the convergence of the system toward a periodic state and to calculate iteratively the instantaneous and asymptotic concentration profiles inside the separation column. One of the main results is that the calculated chloride composition on the inlet side of the column after the elution step is equal to the chloride composition in the feed solution.
Url:
DOI: 10.1002/aic.690480208
Affiliations:
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ISTEX:6126A07AC7EC6AAA24F1528F5F63A07350DFADF3Le document en format XML
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<front><div type="abstract" xml:lang="en">The focus is on analytical resolution of the mass‐balance relation in the case of a binary ion‐exchange system containing chloride and hydrocarbonate anions involved in a two‐way chromatographic cyclic process under critical operating conditions, that is, feed and elution solutions with the same total normality and percolation volumes. Local equilibrium theory is used to demonstrate the convergence of the system toward a periodic state and to calculate iteratively the instantaneous and asymptotic concentration profiles inside the separation column. One of the main results is that the calculated chloride composition on the inlet side of the column after the elution step is equal to the chloride composition in the feed solution.</div>
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