Improved Techniques in Liquid Membrane Separations: An Overview

TLDR

Liquid membrane separations encompass modified bulk, supported, emulsion, hollow fibre, electrostatic pseudo, reverse micelle, hybrid, and other configurations, but this review excludes studies on organic compound and gas removal due to space constraints. This paper provides a brief overview of improved liquid membrane separation techniques. The review discusses ion‑specific carrier design, analytical relevance, stability, modeling, and metal‑removal applications of liquid membranes, drawing on literature from 1990–1997 to assess current configuration status. Keywords include liquid membranes, bulk liquid membrane, electrostatic pseudo liquid membrane, hybrid liquid membrane, hollow fibre contained liquid membrane, polymer inclusion membrane, reverse micelle, and supported liquid membrane.

Abstract

Abstract This paper presents a brief overview of improved Liquid membrane (LM) separation techniques. including modified bulk, supported and emulsion liquid membranes as well as hollow fibre contained liquid membranes, electrostatic pseudo liquid membranes (ESPLIM) reverse micelle and recently developed hybrid (HLM) and other LM configurations. The discussion also includes design of ion specific carriers, analytical importance, aspects of stability and modelling of LMs and their applications in the separation/removal of metal captions from a range of diverse matrices. In general, an attempt has been made to review the literature published from 1990 to 1997 in order to focus on the present status of different liquid membrane configurations. The LM studies dealing with separation and removal of organic compounds and gases are not included in this article owing to limitations of space. Key Words: Liquid membranesBulk liquid membraneElechostatic pseudo liquid membraneHybrid liquid membraneHollow fibre contained liquid membranePolymer inclusion membraneReverse micelleSupported liquid membrane