Laser Light-Scattering and Laser Fluorescence Studies of Solvent Extraction Systems

摘要

The solvent extraction of metal ions from an aqueous solution to a nonpolar organic phase is a separation operation of major technological significance in the hydrometallurgical and nuclear industries. It is now recognized that the interrface plays a key role in the extraction process. However, the interfacial chemistry which occurs in the solvent extraction of metal ions is still very incompletely understood. Although investigations of the interfacial behavior of extraction reagents, in the past, have provided valuable information, progress is becoming more difficult in obtaining new fundamental information from classical surface-chemical approaches. The application of more sophisticated and recently developed techniques, such as laser techniques, holds promise for significant advances in understanding the molecular principles underlying the interfacial behavior of extractant molecules and thier interactions with metal ions. This paper will discuss recent advances in laser light-scattering and laser fluorescence techniques and their application to liquid/liquid interfacial systems. (ERA citation 12:016384)