Method of monitoring and/or controlling biologically catalyzed r

Details Method of monitoring and/or controlling biologically catalyzed r Method of monitoring and/or controlling biologically catalyzed r

1988-01-19

1991-01-22

Spear, Frank

Liquid purification or separation

Processes

Treatment by living organism

210614, 210 961, C02F 312

Patent

active

049869167

ABSTRACT:
In a method of monitoring and/or controlling a biologically catalyzed reaction, a trace gas which either is, or equilibrates with a metabolic intermediate is identified, and the concentration of the trace gas evolving from the reaction is measured. The measured concentration of trace gas is employed to evaluate the metabolic status of the reaction by a deterministic relationshhip, e.g. an empirical relationship or thermodynamic model. The deterministic relationship may involve other gaseous parameters of the reaction. Preferably, the measured concentration of the trace gas is converted via the deterministic relationship into an estimate of the concentration of a different chemical component of interest for a particular application of the reaction. Carbon monoxide has been found to be a suitable trace gas for purposes of monitoring the metabolic state of the anaerobic digestion process. Metabolic state information derived on-line in accordance with the present invention can be advantageously used to control the reaction.

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