Unit Operations Laboratory II

Liquid-Liquid Extraction

Liquid-liquid extraction (LLE) is an important unit operation that allows one to separate fluids based on different solutes being soluble to different degrees in different solvents. In the this experiment, acetone is extracted by contact with water from a feed stream containing an unknown concentration of acetone in butyl acetate (BA).


The goal of this laboratory exercise is to study the performance of a liquid-liquid extraction column.

Learning Objectives

The main learning objective of this laboratory exercise is to gain experience in characterizing the behavior of a liquid-liquid extraction column. To do this, one must examine such parameters as the composition of the top and bottom products at various feed rates and compositions. These parameters should be calculated theoretically using available computer programs and determined experimentally from the column.


Additional Resources