O'Reilly logo

Essentials of Chemical Reaction Engineering by H. Scott Fogler

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

9.4.7 Wash-Out

To learn the effect of increasing the dilution rate, we combine Equations (9-82) and (9-54) and set rd = 0 to get

9-91

image

We see that if D > μ, then dCc/dt will be negative, and the cell concentration will continue to decrease until we reach a point where all cells will be washed out:

Cc = 0

The dilution rate at which wash-out will occur is obtained from Equation (9-90) by setting Cc = 0.

9-92

image

Flow rate at which wash-out occurs

We next want to determine the other extreme for the dilution rate, which is the rate of maximum cell production. ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required