kLa determination: comparative study for a gas mass balance method

The determination of k(L) a by a gas balance method coupled with sulphite oxidation is compared for three kinds of processes (stirred tank, bubble column and fixed-bed column reactors) with a gassing-in and with a classical chemical sulphite oxidation method. The mathematical relations required for...

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Bibliographic Details
Published in:Bioprocess and biosystems engineering 2003-07, Vol.25 (6), p.341-348
Main Authors: Poughon, L, Duchez, D, Cornet, J F, Dussap, C G
Format: Article
Language:English
Subjects:
Comparative studies
Gases
Oxidation
Online Access:Get full text
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Summary:The determination of k(L) a by a gas balance method coupled with sulphite oxidation is compared for three kinds of processes (stirred tank, bubble column and fixed-bed column reactors) with a gassing-in and with a classical chemical sulphite oxidation method. The mathematical relations required for the determination of the k(L) a value are detailed. In coalescing gas-liquid conditions, the values calculated by the three methods are shown to be comparable. The gas balance method is more rapid than either the steady-state gassing-in or the chemical sulphite reaction rate measurement methods. It is also well adapted for three-phase systems (gas-liquid-solid) in which the non-coalescing effects of sulphite solution are reduced by solid interferences.
ISSN:1615-7591
1615-7605
DOI:10.1007/s00449-003-0321-5