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, 1. Solid-liquid separation , Removal of solids relies on the density…
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- Removal of solids relies on the density difference between the particles to be separated and the medium
- Separate particles of 100-0.1 micrometer from liquid by gravitational forces
- Choice of equipment is depend on organism size and the required throughput
- Nozzle discharge types are suitable fro recovery of yeast and bacteria
- Fungal mycellium centrifuges - used to discharge solids and may be used for the recovery of mycellia or bacterial biomass
- Screw decanter centrifuge - suitable for dewatering of coarse solid materials at high solid concentration - used for yeast and fungi
- Filter medium constitutes the separating agent and retains the particles according to size while allowing the passage of fluid through filter
- Flow through the filter later is depends on area of the filter
- Efficacy of filtration depends on:
- size of organisms
- presence of other organisms
- viscosity of the medium
- temperature
- Solid particles deposited on the filter form a layer - filter cake