Gas-Agitated Liquid-Liquid Extraction in a Spray Column

1994 ◽  
Vol 59 (10) ◽  
pp. 2235-2243 ◽  
Author(s):  
Milan Sovilj ◽  
Goran Kneževic
Keyword(s):  
Gas Phase ◽  
Liquid Extraction ◽  
Hydrodynamic Characteristics ◽  
Extraction Column ◽  
Phase System ◽  
Two Phase ◽  
Flow Rates ◽  
Liquid Liquid Extraction ◽  
Three Phase ◽  
Phase Water

The hydrodynamic characteristics of the air water toluene three-phase system in a spray extraction column at 20 °C were examined. The average and local hold-up data of the dispersed phase were determined in dependence on the flow rates of the continuous, dispersed and gaseous phases. The average gas phase hold-up was also measured and analyzed. A comparison was made of the hydrodynamic characteristics of the two-phase (water - toluene) and three-phase (air - water - toluene) systems.

scholarly journals Stability of clavulanic acid in PEG/citrate and liquid–liquid extraction in aqueous two-phase system

2014 ◽  
Vol 375 ◽  
pp. 104-109 ◽  
Author(s):  
M.N. Carneiro-da-Cunha ◽  
K.P.S. Souza ◽  
A.M.O. Mota ◽  
J.A. Teixeira ◽  
C.S. Porto ◽  
...  
Keyword(s):  
Clavulanic Acid ◽  
Liquid Extraction ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Liquid Liquid Extraction

Hydrodynamics of a cocurrent downward liquid–liquid extraction column

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12439-12445 ◽  
Author(s):  
S. Samdavid ◽  
T. Renganathan ◽  
K. Krishnaiah
Keyword(s):  
Liquid Extraction ◽  
Hydrodynamic Characteristics ◽  
Extraction Column ◽  
Liquid Liquid Extraction

The present study focuses on the hydrodynamic characteristics of a cocurrent liquid–liquid downward system with perforated distributor.

scholarly journals Study of caffeine and coumarin extraction kinetics in an aqueous two-phase system based on polyethylene glycol 1500

2022 ◽  
Vol 1212 (1) ◽  
pp. 012020
Author(s):  
I V Zinov’eva
Keyword(s):  
Biological Activity ◽  
Liquid Extraction ◽  
Phase System ◽  
Plant Origin ◽  
Extraction Kinetics ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Food Industries ◽  
Liquid Liquid Extraction ◽  
Polyethylene Glycol 1500

Abstract Caffeine and coumarin are organic compounds of plant origin, which have biological activity and have found wide application in medicine, pharmaceutical, perfumery and food industries. Recovery of caffeine and coumarin from aqueous solutions using liquid-liquid extraction is the most effective method. In the present work the kinetic dependences of caffeine and coumarin in the aqueous two-phase system (ATPS) of PEG 1500 - Na2SO4 - H2O were experimentally obtained. It was established that equilibrium in the system is achieved after 17 minutes for caffeine and after 12 minutes for coumarin. The effect of ultrasound on the extraction rate of caffeine and coumarin in an aqueous two-phase system was also studied.

ON A HIGH-RESOLUTION GODUNOV METHOD FOR A CFD-PBM COUPLED MODEL OF TWO-PHASE FLOW IN LIQUID-LIQUID EXTRACTION COLUMNS

2010 ◽  
Vol 07 (03) ◽  
pp. 421-442 ◽  
Author(s):  
D. ZEIDAN ◽  
M. ATTARAKIH ◽  
J. KUHNERT ◽  
S. TIWARI ◽  
V. SHARMA ◽  
...  
Keyword(s):  
Numerical Solutions ◽  
Two Phase Flow ◽  
Coupled Model ◽  
Liquid Extraction ◽  
Godunov Method ◽  
Balance Model ◽  
Extraction Column ◽  
Phase Flow ◽  
Two Phase ◽  
Liquid Liquid Extraction

This paper is about the numerical solutions for a computational fluid dynamics-population balance model (CFD-PBM) coupled model of two-phase flow in a liquid-liquid extraction column. The model accounts for a complete description between both the dispersed and continuous phases, and constitutes a hyperbolic system of equations having a linearly degenerate nature. A numerical algorithm based on operator splitting approach for the numerical solution of the model is used. The homogeneous part is solved using the TVD MUSCL-Hancock scheme. Numerical results are presented, demonstrating the accuracy of the proposed methods and in particular, the accurate numerical description of the flow in the vicinity of the contact discontinuities.

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