Mass Transfer
Antibiotics are best handled in a

Podbielniak extractor
Rotating disc contactor
Pulsed column extractor
Sieve tray contractor

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Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

Viscosity of liquid components is very high
One of the liquid components has very high affinity towards the solvent
Extracting solvent is cheaply & abundantly available
One of the liquid components is heat sensitive

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Mass Transfer
When the solvent dissolves very little of solute, then

Very small quantity of solvent is required
Large quantity of solvent is required to extract the solute
Solvent of low latent heat of vaporisation should be used
Solvent of low freezing point should be used

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Mass Transfer
In case of an absorber, the operating

Line always lies below the equilibrium curve
Line can be either above or below the equilibrium curve
Velocity is more than the loading velocity
Line always lies above the equilibrium curve

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