General solutions of second-order kinetics for fixed-bed sorption processes

Tan, Henry K. S.

doi:10.1016/0009-2509(89)85220-0

Cited by 1 publication

(3 citation statements)

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“…Tan [Tan, 1980 andTan, 1984] modified the work of Hiester and Vermeulen [Hiester and Vermeulen, 1952] by placing the dimensionless eq. ( 13) of the breakthrough curve, in a new form suitable for microcomputer application: Where:…”

Section: Thomas Solution For Sorption Breakthrough Curvesmentioning

confidence: 99%

“…The number of transfer unit , the separation factor and the throughput parameter can be calculated as follows [Tan, 1984, Sherwood et.al, 1975:…”

Section: Thomas Solution For Sorption Breakthrough Curvesmentioning

confidence: 99%

“…The location of the breakpoint and the shape of the breakthrough curve (degree of concavity) are influenced by many parameters pertaining to the nature of the adsorption equilibrium isotherm and the mass transfer rate [Basheer and Najjar, 1996]. Sorption processes are differential; they usually require numerical methods to solve [Tan, 1984]. The general analytical solution is that of Thomas [Thomas, 1944], it is based on second-order reaction kinetics, but can also apply to diffusion-limited system, as demonstrated by Hiester and Vermeulen [Hiester and Vermeulen, 1952].…”

Section: -Introductionmentioning

confidence: 99%

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Utilization of Thomas Model to Predict Thebreakthrough Curves for Adsorption and Ionexchange

Mustafa,

Ebrahim

2024

jcoeng

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Fixed bed sorption processes such as adsorption and ion exchange do not operate at steady state. The design equations are differential that usually require numerical methods to solve. Thomas gives a general analytical solution for these equations. It is based on second-order reaction kinetics and the assumption of Langmuir isotherm. Computer program for the solution of Thomas model was designed using MATLAB 7.0. Four sets of experimental data are tested to show the capability of Thomas model to predict the breakthrough curves for adsorption and ion exchange processes. These data represent the sorption of o-cresol from water by activated carbon, acetic acid from air by activated carbon, phenol from water by natural zeolite, and trichloroethylene from air by zeolite- 5A.The results show that there are a good agreement between the experimental data and the model.

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Section: Thomas Solution For Sorption Breakthrough Curvesmentioning

confidence: 99%

“…The number of transfer unit , the separation factor and the throughput parameter can be calculated as follows [Tan, 1984, Sherwood et.al, 1975:…”

Section: Thomas Solution For Sorption Breakthrough Curvesmentioning

confidence: 99%