Separation Centrifugation

The resulting mass balance [Eqs. (8.44)—(8.46)] yields Eq. (8.47), so that after canceling the mass, the settling velocity is given by Eq. (8.48). 

Thus at steady-state (dv/dt = 0) the settling velocity during centrifugation vc in the Stokes regime (Re 1) can be written as Eq. (8.49). 

The corresponding equation for sedimentation, meaning settling of particles under just gravity is Eq. (8.50). 

56) applies for a disk-bowl centrifuge, and the flow rate, using Eq. (49) and canceling the term g - Of - r, is given by Eq. (8.57). 

Equation (8.57) elucidates the point that the flow rate Q in a separator depends on a geometric factor (k/27) as well as on both the properties of the fermentation medium to be separated, pp, pm, dp, and 1) (the terms in the second brackets) and on the properties of the apparatus, n, ft), R0, Ri, and 6 (the terms in the third brackets). Again, without a density difference Ap = pp - pm, no centrifugation will occur. For a given fermentation broth, the only parameter under the operator s control is ft), as n, 6, Ra, and Ri depend on the centrifuge design and cannot be varied by the operator. 

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Centrifugal expanders Centrifugalpumps Centrifugal separation Centrifugal sucrose Centnfugation Centrifuge dewaxing... 

COPPERALLOYS-WROUGHTCOPPERANDWROUGHTCOPPERALLOYS] (Vol7) -for centrifuges [SEPARATION - CENTRIFUGAL SEPARATION] (Vol21)... 

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