Mass Transfer
McCabe-Thiele method

Is more accurate than Ponchan-Savarit method
Uses molal units for material and energy balance
Uses weight fractions to express liquid and vapour composition
Can use any type of units

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Mass Transfer
Bollman extractor

Employs only counter-current extraction
Is used for extraction of oil from oilseed
Is a static bed leaching equipment
Is a centrifugal extractor

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