Info

Uncompetitive

Decrease

>0

Decrease

>0

Mixed

Decrease

>0

Increase

<0

In this equation, S* is the concentration of the inhibitor, i.e., the XOC, causing all microbial activity to cease. In other words, it is the toxic concentration. The magnitudes of the coefficients m and n can be altered to represent the type of inhibition occurring. Four types are generally modeled,2"4S,if> and they are defined in Table 22.1 in terms of their effects on |1 and Ks. Also shown are the characteristics m and n must assume to model the effects. Identification of the inhibitor type is important because it determines the manner in which the substrate and inhibitor concentrations interact in regulating substrate removal and biomass growth, thereby governing the response of a bioreactor to an inhibitory shock load.47 For example, if an inhibitor acts in a competitive manner it will have no effect when the substrate concentration is high because it does not effect (1. On the other hand, a mixed inhibitor is the worst type because it will have a negative effect regardless of the substrate concentration.

0 0

Post a comment