Abstract

Liquid membranes as a generic concept have primarily involved the use of either porous solid film impregnated with a liquid carrier or emulsified systems employed in a stirred contactor. Although such systems can display high selectivities and reasonable flux, the stability of the liquid membrane to rupture (i.e. leakage) and unwanted water transport (i.e. swell) have limited their commercial application. Our lab has focused on developing improved emulsion liquid membranes. In particular, we have investigated the possibility of employing microemulsions as liquid membranes to separate metals (especially mercury) from contaminated water. Our most current work on the use of hollow fiber contactors as a means of minimizing swell and leakage in emulsion liquid membrane systems will also be presented.

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