Modified Contactor for Experimental Studies of Mass Transfer and Chemical Reaction across a Liquid−Liquid Interface

Abstract

A modified stirred-cell type contactor has been designed and tested for its use in experimental investigations of mass transfer and chemical reaction in liquid−liquid systems. Its design overcomes the shortcomings of previously proposed contactors. It is easy to operate and has the ability to investigate the effect of a wide range of operating conditions. The mixing performance of the contactor was tested using a dye injection and a tracer technique. Experiments to evaluate mass-transfer coefficients across a liquid−liquid interface have been conducted to determine its effectiveness. The results verified that the contactor could be successfully employed as a useful experimental research apparatus.

Extraction of Rare Earth Elements from Water by Trioctylphosphine Oxide-Based Hydrophobic Deep Eutectic Solvents

“…The mass transfer coefficient of a solute between two immiscible liquids is a significant characteristic of separation and purification processes, having numerous industrial and academic applications . Although several different mechanisms and models have been reported in literature to explain the complex aspects of liquid–liquid extraction, the Lewis cell continues to be one of the most efficient methods due to its many advantages, including the easy assembly, the ability to ensure uniform composition in each phase through thorough mixing, a defined interface area with adjustable sizes, and an independent stirring rate controller in each phase. − In this study, a modified version of the Lewis cell was utilized, which consisted of a rotational speed controller, a rotational speed detector, a constant temperature jacket, two sets of stirring rakes, and two sampling devices.…”