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Problem 1: Multi-stage Countercurrent Solid-Liquid Leaching A counter-current extraction of NaOH from a feed consisting of 80lb NaOH, 400lb H2O, and 100lb CaCO3 is required. The final extract solution will contain 10% NaOH with the recovery of 95% of the NaOH. The underflow is constant at 3lb solution/lb CaCO3. Calculate the number of stages required and the amount of water needed.

Problem 1: Multi-stage Countercurrent Solid-Liquid Leaching A counter-current extraction of NaOH from a feed consisting of 80lb NaOH, 400lb H2O, and 100lb CaCO3 is required. The final extract solution will contain 10% NaOH with the recovery of 95% of the NaOH. The underflow is constant at 3lb solution/lb CaCO3. Calculate the number of stages required and the amount of water needed.

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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Problem 1: Multi-stage Countercurrent Solid-Liquid Leaching A counter-current extraction of NaOH from a feed consisting of 80lb NaOH, 400lb H2O, and 100lb CaCO3 is required. The final extract solution will contain 10% NaOH with the recovery of 95% of the NaOH. The underflow is constant at 3lb solution/lb CaCO3. Calculate the number of stages required and the amount of water needed.
Transcribed Image Text:Problem 1: Multi-stage Countercurrent Solid-Liquid Leaching A counter-current extraction of NaOH from a feed consisting of 80lb NaOH, 400lb H2O, and 100lb CaCO3 is required. The final extract solution will contain 10% NaOH with the recovery of 95% of the NaOH. The underflow is constant at 3lb solution/lb CaCO3. Calculate the number of stages required and the amount of water needed.
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