Negative Biokinetic Rates—The Case of Microbial Death and Endogenous Metabolism

4 Negative Biokinetic Rates—The Case of Microbial Death and Endogenous Metabolism 

This model was successfully used for activated sludge processing (Chiu et al., 1972). 

In App. II a computer simulation of this model equation in batch processes (A. Moser and Steiner, 1975) with varying values for is presented. The influence of a neglected value on the evaluation of Monod parameters in linearization diagrams is shown in Fig. 5.25, whereby false or even negative values for Kg can be the consequence (Grady et al., 1972). With the known value of ki, it is apparent that the undisturbed values for and Kg can be estimated (Moser and Steiner, 1975) only from a plot corresponding to Equ. 5.78 

However, physiological considerations lead to the conclusion that two independent factors are responsible for the decline of the overall mass of the 

The effect of the true rate of death fe on the steady-state yields becomes significant only at very low dilution rates, as shown in Fig. 5.26. Also, an apparent lag can be explained in batch cultures if the inoculum is of very low viability. 

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