An Asymmetric rotating disc contactor (ARDC) column is used as a counter current continuous extractor. A liquid feed is contacted several times with an immiscible solvent that exhibits preferential affinity towards desired components.

At the outlet, we get an extract enriched with the desired component and the spent feed or the raffinate, containing very little of the desired component. An ARDC column with a series of mixers and settlers offers 4 to 6 equivalent stages of separation.

Reactive extraction

read more

read less