Separations and Mass Transfer

Video Lectures

Displaying all 62 video lectures.
Lecture 1
Osmotic Pressure
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Osmotic Pressure
Explanation of osmotic pressure.
Lecture 2
Osmotic Pressure: Protein Molecular Weight (Bio)
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Osmotic Pressure: Protein Molecular Weight (Bio)
Use osmotic pressure of a protein solution to determine the protein molecular weight.
Lecture 3
Phase Equilibrium: Txy Diagram
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Phase Equilibrium: Txy Diagram
A conceptual question investigating how the molar composition changes to a vapor-liquid equilibrium system as temperature is changed.
Lecture 4
Heat Removal to Condense a Vapor Mixture
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Heat Removal to Condense a Vapor Mixture
Describes the steps to condense a binary vapor mixture at its dew point to a liquid at its bubble point using the concept of state functions.
Lecture 5
Binary VLE
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Binary VLE
Vapor-liquid equilibrium calculations for an ideal binary system.
Lecture 6
Batch Distillation: Azeotrope
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Batch Distillation: Azeotrope
The changes in temperature and composition of the vapor are plotted versus time for batch distillation of a binary liquid that has an azeotrope.
Lecture 7
Binary Flash Distillation Example
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Binary Flash Distillation Example
Example problem focused on determining the operating conditions for a binary flash distillation column.
Lecture 8
Rachford-Rice Procedure for Isothermal Flash Distillation
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Rachford-Rice Procedure for Isothermal Flash Distillation
Derives the Rachford-Rice procedure for isothermal flash distillation calculations for multiple components.
Lecture 9
Packed Bed Column Height
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Packed Bed Column Height
An example describing how to calculate the height of a packed bed distillation column.
Lecture 10
Binary Distillation with Multiple Feeds
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Binary Distillation with Multiple Feeds
Binary distillation example with multiple feeds solved using McCabe-Thiele analysis.
Lecture 11
Binary Distillation with Non-Optimal Feed
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Binary Distillation with Non-Optimal Feed
Example of a binary distillation column operating with a feed at a non-optimal location. Column has total reboil and no condenser.
Lecture 12
Binary Distillation with Open Steam Heating
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Binary Distillation with Open Steam Heating
Binary distillation example involving open steam (direct steam) heating instead of a reboiler.
Lecture 13
Binary Distillation with Side Stream Product
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Binary Distillation with Side Stream Product
Binary distillation example involving a side stream product.
Lecture 14
Distillation with No Distillate
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Distillation with No Distillate
An example of a distillation column having no distillate stream and a total reboiler. Determine bottoms composition and composition of a sample of distillate taken at steady-state conditions.
Lecture 15
Distillation: Murphree Efficiency
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Distillation: Murphree Efficiency
Example describing the use of Murphree efficiency and its effect on the number of stages in a distillation column.
Lecture 16
Distillation using Partial Condenser (Part I)
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Distillation using Partial Condenser (Part I)
Example separations problem for distillation of acetone/ethanol. Balances and determining stage number and feed entrance included. Made by faculty at the University of Colorado Boulder Department of Chemical and Biological Engineering. Check out our Separations and Mass Transfer playlist at http://www.youtube.com/playlist?list=PL61BFC1C064B40049
Lecture 17
Distillation using Partial Condenser (Part II)
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Distillation using Partial Condenser (Part II)
A continuation of Distillation - Partial Condenser/Total Reboil. Determine the number stages for minimum reflux and total reflux.
Lecture 18
Distillation: Side Stream Feed
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Distillation: Side Stream Feed
Example distillation problem consisting of feed and secondary side stream feed containing steam. Determines feed location and number of stages.
Lecture 19
Absorption of a Dilute Species
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Absorption of a Dilute Species
Calculates the number of stages for an absorption column needed to remove chloroform from an air stream given inlet and outlet specifications.
Lecture 20
Partially Miscible Liquid-Liquid Extraction
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Partially Miscible Liquid-Liquid Extraction
Determining the number of stages in a liquid-liquid extraction for a partially miscible system. Given equilibrium data, design the separations system.
Lecture 21
Single-Effect Evaporator: Introduction
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Single-Effect Evaporator: Introduction
Describes the operation of a single-effect evaporator which is used to concentrate a solution.
Lecture 22
Single-Effect Evaporator: Heat Transfer Area
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Single-Effect Evaporator: Heat Transfer Area
Calculates the heat transfer area for a single-effect evaporator that is used to concentrate a salt solution.
Lecture 23
Triple-Effect Evaporator: Introduction
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Triple-Effect Evaporator: Introduction
Describes the operation of a triple-effect evaporator to concentrate a solute liquid solution using significantly less energy than a single-effect evaporator.
Lecture 24
Triple-Effect Evaporator: Backward Feed
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Triple-Effect Evaporator: Backward Feed
Describes how a triple-effect evaporator with backward feed concentrates a dilute solution.
Lecture 25
Reverse Osmosis
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Reverse Osmosis
Describes the process of reverse osmosis in which a membrane is used to separate a solvent-solute mixture because of a pressure difference across a membrane.
Lecture 26
Reverse Osmosis: Changes in Driving Force
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Reverse Osmosis: Changes in Driving Force
Describes how the driving force for reverse osmosis decreases due to concentration polarization and the increase in solute concentration due to solvent permeation.
Lecture 27
Diffusion through a Carbon Rod (Part I)
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Diffusion through a Carbon Rod (Part I)
Calculates the initial rate of carbon dioxide production due to the reaction of carbon with oxygen diffusing through a quiescent boundary layer of air.
Lecture 28
Diffusion through a Carbon Rod (Part II)
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Diffusion through a Carbon Rod (Part II)
Calculates the time for a carbon rod to disappear due to the reaction of carbon with oxygen diffusing through a boundary layer.
Lecture 29
Mass Transfer in a Catalyst Sphere
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Mass Transfer in a Catalyst Sphere
Uses a shell balance to determine the rate of product formed with respect to time for a spherical catalyst.
Lecture 30
Diffusion Limited Drug Delivery (Bio)
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Diffusion Limited Drug Delivery (Bio)
Derives the differential equation for a diffusion limited drug delivery system.
Lecture 31
Unsteady-State Diffusion
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Unsteady-State Diffusion
Derives the differential equations for unsteady-state diffusion for a herbicide spill into the air and soil.
Lecture 32
Convective Mass Transfer
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Convective Mass Transfer
A lead tank contains water. Lead is leaching into the water through convective transfer. Determine a relationship between concentration of lead and the dependent variables of the system.
Lecture 33
Convective Mass Transfer: Part I (Bio)
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Convective Mass Transfer: Part I (Bio)
Derives an equation for convective mass transfer using a mass balance on a differential element.
Lecture 34
Convective Mass Transfer: Part II (Bio)
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Convective Mass Transfer: Part II (Bio)
Finds the exiting concentration of a chemical agent leaving a blood vessel.
Lecture 35
Excel Solver Introduction
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Excel Solver Introduction
Describes how to use the solver function in Excel 2010.
Lecture 36
Hunter-Nash Method: Liquid-Liquid Extraction
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Hunter-Nash Method: Liquid-Liquid Extraction
Explains how to use the Hunter-Nash graphical method to determine the number of stages needed to achieve a specified liquid-liquid extraction separation.
Lecture 37
Interpolating Tie Lines on a Ternary Diagram
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Interpolating Tie Lines on a Ternary Diagram
Describes how to interpolate equilibrium tie lines on a ternary diagram.
Lecture 38
Adsorption Introduction
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Adsorption Introduction
Explains the concept of adsorption and derives the Langmuir isotherm.
Lecture 39
What is Chemical Potential? (Multi-Component Systems)
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What is Chemical Potential? (Multi-Component Systems)
Explains chemical potential for a multi-component system and discusses movement between phases and chemical reactions.
Lecture 40
Diffusion into a Solid
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Diffusion into a Solid
Calculates the time for carbon to diffuse into a metal alloy at high temperature.
Lecture 41
Binary Phase Diagram (Txy and xy)
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Binary Phase Diagram (Txy and xy)
Explains how to generate phase diagrams and read them for use in separation calculations.
Lecture 42
Flash Distillation Derivation
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Flash Distillation Derivation
Derives the operating line for binary flash distillation and shows how to use it.
Lecture 43
Flash Distillation Energy Balance
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Flash Distillation Energy Balance
Determines the operating temperatures and energy requirements for flash distillation.
Lecture 44
Enthalpy Concentration Diagram
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Enthalpy Concentration Diagram
Shows how to read an enthalpy concentration diagram and determine phase compositions.
Lecture 45
Enthalpy Concentration Diagram Example
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Enthalpy Concentration Diagram Example
Uses an enthalpy composition diagram in a partial condensation problem.
Lecture 46
Deriving Molar Flux Equations
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Deriving Molar Flux Equations
Derives the equations for molar fluxes using Fick's law of diffusion.
Lecture 47
Equimolar Counterdiffusion (EMD)
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Equimolar Counterdiffusion (EMD)
Derives the equations to use in the case of equimolar counterdiffusion (EMD).
Lecture 48
Equimolar Counterdiffusion Example
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Equimolar Counterdiffusion Example
Calculates species' velocities and molar flow rates for a binary mixture undergoing equimolar counter diffusion.
Lecture 49
Unimolecular Diffusion (UMD)
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Unimolecular Diffusion (UMD)
Derives the flux equations for the unimolecular diffusion of A through a stagnant film of B.
Lecture 50
Unimolecular Diffusion Example
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Unimolecular Diffusion Example
Uses the unimolecular diffusion flux equations to solve for initial flux and time to evaporate a fluid from a beaker.
Lecture 51
McCabe-Thiele Graphical Method Example (Part I)
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McCabe-Thiele Graphical Method Example (Part I)
Uses the McCabe-Thiele graphical method to determine the number of equilibrium stages in a distillation column.
Lecture 52
McCabe-Thiele Graphical Method Example (Part II)
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McCabe-Thiele Graphical Method Example (Part II)
Uses the McCabe-Thiele graphical method to determine the number of equilibrium stages in a distillation column.
Lecture 53
Deriving the Differential Equations of Mass Transfer
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Deriving the Differential Equations of Mass Transfer
Derives the differential equations for mass transfer using the integral method and shell balances.
Lecture 54
Diffusion from Spherical Particle
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Diffusion from Spherical Particle
Determine the production rate of a species diffusing away from a reactive spherical particle.
Lecture 55
Hunter-Nash Method: Liquid-Liquid Extraction Example
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Hunter-Nash Method: Liquid-Liquid Extraction Example
Uses the Hunter-Nash graphical method to solve a liquid-liquid extraction separation problem.
Lecture 56
Mass Transfer Setup to Reactive Surface
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Mass Transfer Setup to Reactive Surface
Determines the concentration of a species with respect to position for flux to a reactive surface.
Lecture 57
Langmuir Isotherms for Binary Mixture
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Langmuir Isotherms for Binary Mixture
Demonstrates the amounts adsorbed on a surface for a binary gas mixture using an interactive Mathematica simulation. The adsorption is modeled using extended Langmuir isotherms.
Lecture 58
Pxy Diagram (Simulation)
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Pxy Diagram (Simulation)
Uses an interactive Mathematica simulation to describe a pressure-mole fraction diagram (P-x-y) that is generated with Raoult's law. Behavior is discussed where the pressure is changed at constant overall composition and where the overall composition is changed at constant pressure. This simulation is available at: http://demonstrations.wolfram.com/LeverRuleAppliedToTheBenze...
Lecture 59
Osmolarity Example (Bio)
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Osmolarity Example (Bio)
Covers the basics of calculating osmolarity.
Lecture 60
Osmotic Shock Disruption (Bio)
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Osmotic Shock Disruption (Bio)
Uses osmotic shock as a method of disrupting (lysing) cells.
Lecture 61
Ternary Phase Diagram Basics (Simulation)
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Ternary Phase Diagram Basics (Simulation)
Uses a simulation to show how ternary phase diagrams are interpreted. This is for a single phase, three component system.
Lecture 62
McCabe-Thiele: Stepping off Stages
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McCabe-Thiele: Stepping off Stages
Demonstrates conceptually how to step off stages on a McCabe-Thiele diagram.