Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2003 by Universidad Católica de Valparaíso -- Chile
Vol. 6 No. 3, Issue of December 15, 2003 
 
Table 4. Mathematical models representing the response surfaces for the exit and mean solids composition for each impeller location.

Impeller

Model

R2

3MPU, exit

%w/v = - 0.825 + 0.547 (vvm) + 0.392 (h) - 5.8·10-6 (rpm)2 - 0.059 (h)2

0.9272

3MPU, mean

%w/v = 0.23 + 1.29 (vvm) + 0.006 (rpm) + 0.57 (h) - 0.30 (vvm)2

 - 4.14·110-6 (rpm)2 - 0.07(h)2

0.9960

6MFU, exit

%w/v = 2.18 + 0.005 (rpm) - 1.25 (h) - 0.001 (vvm)(rpm) - 0.092 (vvm)(h)

+ 0.0009 (rpm)(h) - 3.5·10-6 (rpm)2 + 0.074 (h)2

0.8915

6MFU, mean

%w/v = 0.84 + 0.014 (rpm) – 0.046 (h) + 0.001 (vvm)(rpm) - 1.1·10-5  (rpm)2

- 0.046 (h)2  

0.9807


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