Summary
Physical characteristics, namely floc density function, floc size distribution, and relative floc strength, of a number of flocculent yeast types were measured. A straight-line relationship was found to exist between log values of size and density for the yeasts examined. Each yeast type had coefficients from this relationship which could be used to interpret settling behaviour. Indices of relative floc strength were also obtained and together with the floc density function allowed fuller interpretation of yeast settling than with simpler theories.
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Abbreviations
- a :
-
constant (g·cm-3)
- B 2/B 1 :
-
floc binding strength of floc2 relative to floc1
- d f :
-
floc diameter (cm)
- d i :
-
image diameter on print (cm)
- d max :
-
maximum floc diameter (cm)
- f d :
-
Ploc effective density (g·cm-3)
- g :
-
gravitational constant (981 cm·s-1)
- K p :
-
constant (-)
- R l :
-
rate of enlargement on film
- R 2 :
-
rate of enlargement on print
- S s :
-
density of suspending liquid phase (g·cm-3)
- S f :
-
density of solid (floc) phase (g·cm-3)
- U t :
-
terminal settling velocity (cm·s-1)
- u :
-
liquid viscosity (g·cm-3·-1)
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Brohan, B., McLoughlin, A.J. Characterization of the physical properties of yeast flocs. Appl Microbiol Biotechnol 20, 16–22 (1984). https://doi.org/10.1007/BF00254640
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DOI: https://doi.org/10.1007/BF00254640