Mixing Characteristics of a Liquid–Liquid Dispersion in a Jet-Driven Mixing Column: Developed for the Separation of Organic Pollutants

• Published in: Industrial & engineering chemistry research Vol. 60; no. 49; pp. 18166 - 18182
• Main Authors: Sangtam, Bongliba T, Prakash, Ritesh, Majumder, Subrata Kumar
• Format: Journal Article
• Language: English
• Published: American Chemical Society 15.12.2021
• Subjects: Thermodynamics, Transport, and Fluid Mechanics
• ISSN: 0888-5885; 1520-5045
• DOI: 10.1021/acs.iecr.1c03733

The present work focuses on studying the degree of liquid–liquid axial dispersion in a jet-driven mixing column. The online conductivity measurement was performed to study the residence time distribution. The effects of the jet velocity and dispersed phase volume on mixing characteristics were studied. The axial dispersion coefficient range was found to be 25.6 to 106 cm2/s. A general correlation is developed to predict the axial dispersion coefficient based on various operating variables. A mechanistic model is proposed to interpret dispersion due to the turbulence and phase circulation inside the jet-driven mixing column. Based on the velocity distribution model, the velocity characteristic factor and the dispersion factor of drop motion were also enunciated. The present study may be helpful for further understanding a two-phase system in industrial applications, especially in liquid–liquid extraction.