Liquid-Liquid Extraction Data

Abstract

Considerable data of a physical-chemical nature form the fundamentals upon which the development of liquid-liquid extraction processes may be based. Among these data are the solubility relations-mutual solubility and distribution coefficients-for the constituents involved. These relations cannot yet be predicted but must be obtained experimentally.The usual extraction system involves three liquid components-one pair of immiscible liquids and two pairs of miscible liquids. When the three components are present in such quantities that two liquid phases exist, the common miscible liquid distributes itself between the immiscible pi ir in accordance with the distribution law. The presence of the miscible liquid increases the solubilities

Drop formation at low velocities in liquid‐liquid systems: Part I. Prediction of drop volume

“…Experiments used the benzene-acetone-water system because, at low concentrations of acetone, the distribution coefficient of acetone between benzene and water is approximately 1.0 on a weight percent basis for concentrations below 10% acetone (9). Therefore, the driving force for transfer into or out of the jet for a given concentration of acetone in one of the phases is approximately the same.…”

“…and Equation (9) for the drag force becomes Equation ( 1 6 ) is valid only when the assumption of spherical growth is justified. Figure 2 shows that Equation (12) gives a good prediction of the leading edge velocity measured experimentally from high-speed movies for the smallest nozzle used.…”

Liquid-liquid equilibrium for the quaternary system of o-xylene(1)+water(2)+butyric acid(3)+ethyl acetate(4) at 25 °C and atmospheric pressure

“…The mutual solubility (binodal curve) in o-xylene(1)+water(2)+ butyric acid(3)+ethyl acetate(4) was determined at 25 o C and atmospheric pressure by the cloud-point method as described by Othmer et al [20]. For the determination of the mutual solubility data, an accurately known mass of a homogeneous mixture of two compounds was placed in a thermostated glass-stoppered bottle, one of the components was titrated into the bottle from a microburet with an uncertainty of ±0.1 mL until the solution became turbid, and the amount titrated was recorded.…”

(Liquid + liquid) equilibria of (tert -amyl ethyl ether+ ethanol + water) at several temperatures

“…A comparison of experimental and calculated tie lines using the UNIFAQ method is also presented. First, using the cloud-point method, (5) we obtained the solubility curves, which were used later to carry out the calibration of the gas chromatograph. Conjugate phases were obtained with mixtures having compositions in the immiscible region that were vigorously stirred for at least 1 h in jacketed cells with septum outlets, and then left to stand for at least 4 h (the time necessary to attain equilibrium was established in preliminary experiments).…”