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5-24. Small amounts of an inorganic salt contained in an organic fluid stream can be removed by contacting the stream with pure water as illustrated in Figure 5.24. The process requires that the organic and aqueous streams be contacted in a mixer that provides a large surface area for mass transfer, and then separated in a settler. If the mixer is efficient, the two phases will be in equilibrium as they leave the settler and you are to assume that this is the case for this problem. You are given the following information: a) Organic stream flow rate: 1000 lbm/min b) Specific gravity of the organic fluid: 0.87 Porg PH20 11 c) Salt concentration in the organic stream entering the mixer: (cA)org 0.0005 mol/L org d) Equilibrium relation for the inorganic salt: (corg = Keg.A (CA)ag where Keg 1/60 Here (cAag represents the salt concentration in the aqueous phase that is in equilibrium with the salt In this problem you are asked to determine the mass flow rates concentration in the organic phase, (corg of the water stream that will reduce the salt concentration in the organic stream to 0.1, 0.01 and 0.001 times the original salt concentration. immiscible, i.e., only salt is transferred between the two phases. In addition, the amount of material transferred is so small that the volumetric flow rates of the two streams can be considered constant. The aqueous and organic phases are to be considered completely organic phase aqueous 1 phase aqueous organic phase phase Settler Mixer 4 bot Figure 5.24. Liquid-liquid extraction

5-24. Small amounts of an inorganic salt contained in an organic fluid stream can be removed by contacting the stream with pure water as illustrated in Figure 5.24. The process requires that the organic and aqueous streams be contacted in a mixer that provides a large surface area for mass transfer, and then separated in a settler. If the mixer is efficient, the two phases will be in equilibrium as they leave the settler and you are to assume that this is the case for this problem. You are given the following information: a) Organic stream flow rate: 1000 lbm/min b) Specific gravity of the organic fluid: 0.87 Porg PH20 11 c) Salt concentration in the organic stream entering the mixer: (cA)org 0.0005 mol/L org d) Equilibrium relation for the inorganic salt: (corg = Keg.A (CA)ag where Keg 1/60 Here (cAag represents the salt concentration in the aqueous phase that is in equilibrium with the salt In this problem you are asked to determine the mass flow rates concentration in the organic phase, (corg of the water stream that will reduce the salt concentration in the organic stream to 0.1, 0.01 and 0.001 times the original salt concentration. immiscible, i.e., only salt is transferred between the two phases. In addition, the amount of material transferred is so small that the volumetric flow rates of the two streams can be considered constant. The aqueous and organic phases are to be considered completely organic phase aqueous 1 phase aqueous organic phase phase Settler Mixer 4 bot Figure 5.24. Liquid-liquid extraction

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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5-24. Small amounts of an inorganic salt contained in an organic fluid stream can be removed by contacting the stream with pure water as illustrated in Figure 5.24. The process requires that the organic and aqueous streams be contacted in a mixer that provides a large surface area for mass transfer, and then separated in a settler. If the mixer is efficient, the two phases will be in equilibrium as they leave the settler and you are to assume that this is the case for this problem. You are given the following information: a) Organic stream flow rate: 1000 lbm/min b) Specific gravity of the organic fluid: 0.87 Porg PH20 11 c) Salt concentration in the organic stream entering the mixer: (cA)org 0.0005 mol/L org d) Equilibrium relation for the inorganic salt: (corg = Keg.A (CA)ag where Keg 1/60 Here (cAag represents the salt concentration in the aqueous phase that is in equilibrium with the salt In this problem you are asked to determine the mass flow rates concentration in the organic phase, (corg of the water stream that will reduce the salt concentration in the organic stream to 0.1, 0.01 and 0.001 times the original salt concentration. immiscible, i.e., only salt is transferred between the two phases. In addition, the amount of material transferred is so small that the volumetric flow rates of the two streams can be considered constant. The aqueous and organic phases are to be considered completely organic phase aqueous 1 phase aqueous organic phase phase Settler Mixer 4 bot Figure 5.24. Liquid-liquid extraction
Transcribed Image Text:5-24. Small amounts of an inorganic salt contained in an organic fluid stream can be removed by contacting the stream with pure water as illustrated in Figure 5.24. The process requires that the organic and aqueous streams be contacted in a mixer that provides a large surface area for mass transfer, and then separated in a settler. If the mixer is efficient, the two phases will be in equilibrium as they leave the settler and you are to assume that this is the case for this problem. You are given the following information: a) Organic stream flow rate: 1000 lbm/min b) Specific gravity of the organic fluid: 0.87 Porg PH20 11 c) Salt concentration in the organic stream entering the mixer: (cA)org 0.0005 mol/L org d) Equilibrium relation for the inorganic salt: (corg = Keg.A (CA)ag where Keg 1/60 Here (cAag represents the salt concentration in the aqueous phase that is in equilibrium with the salt In this problem you are asked to determine the mass flow rates concentration in the organic phase, (corg of the water stream that will reduce the salt concentration in the organic stream to 0.1, 0.01 and 0.001 times the original salt concentration. immiscible, i.e., only salt is transferred between the two phases. In addition, the amount of material transferred is so small that the volumetric flow rates of the two streams can be considered constant. The aqueous and organic phases are to be considered completely organic phase aqueous 1 phase aqueous organic phase phase Settler Mixer 4 bot Figure 5.24. Liquid-liquid extraction
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