Yeast cells are recovered from a fermentation broth by using a tubular centrifuge. Sixty percent of the cells are recovered at a flow rate of 12 l/min with a rotational speed of 4000 rpm. Recovery is inversely proportional to flow rate. a. To increase the recovery of cells to 95% at the same flow rate, what should be the rpm of the centrifuge?

Explanation:

Given that:

For a continuous centrifuge ; solid recovery R ∝

where;

ω = angular velocity of the centrifuge in rpm

Q = flow rate

SO;

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