Automatic methods of solvent extraction. Part II. Continuous extraction of low concentrations of non-ionic detergent from water

Abstract

Concurrently with the development of an automatic batch system for solvent extraction of trace amounts of detergent from sewage effluents and waters, an alternative scheme involving the use of continuous flow principles has been devised. The design principles for a unit to extract trace amounts (5 to 25 µg) from samples containing up to 0·1 mg l^–1 are illustrated.

The efficiency of the continuous system is compared in turn with the original manual technique of Patterson, Hunt and Tucker and our original automatic batch process.