c28420-lecture2-2009 - Lecture 2 Lecture 2 Solvent...

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Lecture 2 2 S l l i & Lecture 2: Solvent selection & Solvent-based separation C28420: Separation Process Principles - Lecture 2 (2009) 1
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What are Solvents? Why do we need them? Solvent: Solvent is that constituent of a solution that is Solvent is that constituent of a solution that is liquid in the pure state, is usually present in the larger amount and has dissolved the other constituent (a solute) of the solution. The solute may be a solid, a liquid or a gas. The solvent may be a single compound or a mixture of d compounds. When needed: Solvent based separation techniques become necessary when separation or removal of a solute(s) from a mixture become difficult or infeasible by conventional separation techniques such as distillation conventional separation techniques such as distillation. C28420: Separation Process Principles - Lecture 2 (2009) 2
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