Solution of adsorption problems with steep concentration gradients and nonlinear isotherms

S. Gomez-Salazar; J. C. Heydweiller; L. L. Tavlarides

doi:10.1016/j.compchemeng.2004.01.011

Solution of adsorption problems with steep concentration gradients and nonlinear isotherms

S. Gomez-Salazar, J. C. Heydweiller, L. L. Tavlarides

Department of Biomedical & Chemical Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

This work was motivated by the need to describe the adsorption of cadmium ions from aqueous solutions. The model for the adsorption process includes differential balances for both the fixed bed and the organo-ceramic pellets in the bed. For the highly nonlinear isotherm and the physical parameters of this system, there are steep concentration profiles within the pellets. Accurate solutions were obtained using the method of lines (MOL). There is good agreement between the numerical results and the experimental breakthrough curve when the adsorption is assumed to be controlled by a film/pore diffusion mechanism.

Original language	English (US)
Pages (from-to)	1913-1917
Number of pages	5
Journal	Computers and Chemical Engineering
Volume	28
Issue number	9
DOIs	https://doi.org/10.1016/j.compchemeng.2004.01.011
State	Published - Aug 15 2004

Keywords

Adsorption
Fixed-bed
Method of lines

ASJC Scopus subject areas

General Chemical Engineering
Computer Science Applications

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10.1016/j.compchemeng.2004.01.011

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title = "Solution of adsorption problems with steep concentration gradients and nonlinear isotherms",

abstract = "This work was motivated by the need to describe the adsorption of cadmium ions from aqueous solutions. The model for the adsorption process includes differential balances for both the fixed bed and the organo-ceramic pellets in the bed. For the highly nonlinear isotherm and the physical parameters of this system, there are steep concentration profiles within the pellets. Accurate solutions were obtained using the method of lines (MOL). There is good agreement between the numerical results and the experimental breakthrough curve when the adsorption is assumed to be controlled by a film/pore diffusion mechanism.",

keywords = "Adsorption, Fixed-bed, Method of lines",

author = "S. Gomez-Salazar and Heydweiller, {J. C.} and Tavlarides, {L. L.}",

note = "Funding Information: The financial support from the National Science Foundation through grant no. CTS-9805118 is greatly appreciated.",

year = "2004",

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doi = "10.1016/j.compchemeng.2004.01.011",

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T1 - Solution of adsorption problems with steep concentration gradients and nonlinear isotherms

AU - Gomez-Salazar, S.

AU - Heydweiller, J. C.

AU - Tavlarides, L. L.

N1 - Funding Information: The financial support from the National Science Foundation through grant no. CTS-9805118 is greatly appreciated.

PY - 2004/8/15

Y1 - 2004/8/15

N2 - This work was motivated by the need to describe the adsorption of cadmium ions from aqueous solutions. The model for the adsorption process includes differential balances for both the fixed bed and the organo-ceramic pellets in the bed. For the highly nonlinear isotherm and the physical parameters of this system, there are steep concentration profiles within the pellets. Accurate solutions were obtained using the method of lines (MOL). There is good agreement between the numerical results and the experimental breakthrough curve when the adsorption is assumed to be controlled by a film/pore diffusion mechanism.

AB - This work was motivated by the need to describe the adsorption of cadmium ions from aqueous solutions. The model for the adsorption process includes differential balances for both the fixed bed and the organo-ceramic pellets in the bed. For the highly nonlinear isotherm and the physical parameters of this system, there are steep concentration profiles within the pellets. Accurate solutions were obtained using the method of lines (MOL). There is good agreement between the numerical results and the experimental breakthrough curve when the adsorption is assumed to be controlled by a film/pore diffusion mechanism.

KW - Adsorption

KW - Fixed-bed

KW - Method of lines

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M3 - Article

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SN - 0098-1354

VL - 28

SP - 1913

EP - 1917

JO - Computers and Chemical Engineering

JF - Computers and Chemical Engineering

IS - 9

ER -

Solution of adsorption problems with steep concentration gradients and nonlinear isotherms

Abstract

Keywords

ASJC Scopus subject areas

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