Masters Theses


"The objective of this thesis is to develop a method for obtaining individual mass transfer coefficients in absorption columns. There are two assumptions which apply throughout the thesis. The first assumption is "plug flow." The second assumption is that the axial concentrations can be measured accurately enough.

The problem is approached by simulating data generated from a mathematical model of an absorption column. A response surface is defined which is a function of the individual mass transfer coefficients. The lowest point on the surface locates the individual mass transfer coefficients for the system in question.

The mathematical model of the absorption column consists of two differential equations. One relates the change in liquid concentration with respect to column height and the other relates the change in vapor concentration with respect to column height….

All the methods that were studied converged to the lowest point on the response surface. Therefore, the comparison reduces to which method or methods work best. The best methods for finding kx and ky are the Nelder and Mead Method and the Accelerated Method because they converge approximately ten times faster than the Sequential Method (faster in terms of the number of iterations and computer time). The Complex Method of Box was approximately 10% slower than the Nelder and Mead Method and the Accelerated Method"--Abstract, pages ii-iii.


Wellek, Robert M.

Committee Member(s)

Grice, Harvey H., 1912-1993
Crosser, Orrin K.
Baird, Thomas B.


Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering


University of Missouri--Rolla. Department of Chemical Engineering


University of Missouri--Rolla

Publication Date



x, 70 pages

Note about bibliography

Includes bibliographical references (page 51).


© 1973 Charles Callihan, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Mass transfer -- Mathematical models
Liquids -- Absorption and adsorption -- Mathematical models
Gases -- Absorption and adsorption -- Mathematical models

Thesis Number

T 2862

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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