# Separations and Mass Transfer

## Video Lectures

Displaying all 62 video lectures.

Lecture 1Play Video |
Osmotic PressureExplanation of osmotic pressure. |

Lecture 2Play Video |
Osmotic Pressure: Protein Molecular Weight (Bio)Use osmotic pressure of a protein solution to determine the protein molecular weight. |

Lecture 3Play Video |
Phase Equilibrium: Txy DiagramA conceptual question investigating how the molar composition changes to a vapor-liquid equilibrium system as temperature is changed. |

Lecture 4Play Video |
Heat Removal to Condense a Vapor MixtureDescribes 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 5Play Video |
Binary VLEVapor-liquid equilibrium calculations for an ideal binary system. |

Lecture 6Play Video |
Batch Distillation: AzeotropeThe changes in temperature and composition of the vapor are plotted versus time for batch distillation of a binary liquid that has an azeotrope. |

Lecture 7Play Video |
Binary Flash Distillation ExampleExample problem focused on determining the operating conditions for a binary flash distillation column. |

Lecture 8Play Video |
Rachford-Rice Procedure for Isothermal Flash DistillationDerives the Rachford-Rice procedure for isothermal flash distillation calculations for multiple components. |

Lecture 9Play Video |
Packed Bed Column HeightAn example describing how to calculate the height of a packed bed distillation column. |

Lecture 10Play Video |
Binary Distillation with Multiple FeedsBinary distillation example with multiple feeds solved using McCabe-Thiele analysis. |

Lecture 11Play Video |
Binary Distillation with Non-Optimal FeedExample of a binary distillation column operating with a feed at a non-optimal location. Column has total reboil and no condenser. |

Lecture 12Play Video |
Binary Distillation with Open Steam HeatingBinary distillation example involving open steam (direct steam) heating instead of a reboiler. |

Lecture 13Play Video |
Binary Distillation with Side Stream ProductBinary distillation example involving a side stream product. |

Lecture 14Play Video |
Distillation with No DistillateAn 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 15Play Video |
Distillation: Murphree EfficiencyExample describing the use of Murphree efficiency and its effect on the number of stages in a distillation column. |

Lecture 16Play Video |
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 17Play Video |
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 18Play Video |
Distillation: Side Stream FeedExample distillation problem consisting of feed and secondary side stream feed containing steam. Determines feed location and number of stages. |

Lecture 19Play Video |
Absorption of a Dilute SpeciesCalculates the number of stages for an absorption column needed to remove chloroform from an air stream given inlet and outlet specifications. |

Lecture 20Play Video |
Partially Miscible Liquid-Liquid ExtractionDetermining the number of stages in a liquid-liquid extraction for a partially miscible system. Given equilibrium data, design the separations system. |

Lecture 21Play Video |
Single-Effect Evaporator: IntroductionDescribes the operation of a single-effect evaporator which is used to concentrate a solution. |

Lecture 22Play Video |
Single-Effect Evaporator: Heat Transfer AreaCalculates the heat transfer area for a single-effect evaporator that is used to concentrate a salt solution. |

Lecture 23Play Video |
Triple-Effect Evaporator: IntroductionDescribes the operation of a triple-effect evaporator to concentrate a solute liquid solution using significantly less energy than a single-effect evaporator. |

Lecture 24Play Video |
Triple-Effect Evaporator: Backward FeedDescribes how a triple-effect evaporator with backward feed concentrates a dilute solution. |

Lecture 25Play Video |
Reverse OsmosisDescribes 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 26Play Video |
Reverse Osmosis: Changes in Driving ForceDescribes how the driving force for reverse osmosis decreases due to concentration polarization and the increase in solute concentration due to solvent permeation. |

Lecture 27Play Video |
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 28Play Video |
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 29Play Video |
Mass Transfer in a Catalyst SphereUses a shell balance to determine the rate of product formed with respect to time for a spherical catalyst. |

Lecture 30Play Video |
Diffusion Limited Drug Delivery (Bio)Derives the differential equation for a diffusion limited drug delivery system. |

Lecture 31Play Video |
Unsteady-State DiffusionDerives the differential equations for unsteady-state diffusion for a herbicide spill into the air and soil. |

Lecture 32Play Video |
Convective Mass TransferA 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 33Play Video |
Convective Mass Transfer: Part I (Bio)Derives an equation for convective mass transfer using a mass balance on a differential element. |

Lecture 34Play Video |
Convective Mass Transfer: Part II (Bio)Finds the exiting concentration of a chemical agent leaving a blood vessel. |

Lecture 35Play Video |
Excel Solver IntroductionDescribes how to use the solver function in Excel 2010. |

Lecture 36Play Video |
Hunter-Nash Method: Liquid-Liquid ExtractionExplains how to use the Hunter-Nash graphical method to determine the number of stages needed to achieve a specified liquid-liquid extraction separation. |

Lecture 37Play Video |
Interpolating Tie Lines on a Ternary DiagramDescribes how to interpolate equilibrium tie lines on a ternary diagram. |

Lecture 38Play Video |
Adsorption IntroductionExplains the concept of adsorption and derives the Langmuir isotherm. |

Lecture 39Play Video |
What is Chemical Potential? (Multi-Component Systems)Explains chemical potential for a multi-component system and discusses movement between phases and chemical reactions. |

Lecture 40Play Video |
Diffusion into a SolidCalculates the time for carbon to diffuse into a metal alloy at high temperature. |

Lecture 41Play Video |
Binary Phase Diagram (Txy and xy)Explains how to generate phase diagrams and read them for use in separation calculations. |

Lecture 42Play Video |
Flash Distillation DerivationDerives the operating line for binary flash distillation and shows how to use it. |

Lecture 43Play Video |
Flash Distillation Energy BalanceDetermines the operating temperatures and energy requirements for flash distillation. |

Lecture 44Play Video |
Enthalpy Concentration DiagramShows how to read an enthalpy concentration diagram and determine phase compositions. |

Lecture 45Play Video |
Enthalpy Concentration Diagram ExampleUses an enthalpy composition diagram in a partial condensation problem. |

Lecture 46Play Video |
Deriving Molar Flux EquationsDerives the equations for molar fluxes using Fick's law of diffusion. |

Lecture 47Play Video |
Equimolar Counterdiffusion (EMD)Derives the equations to use in the case of equimolar counterdiffusion (EMD). |

Lecture 48Play Video |
Equimolar Counterdiffusion ExampleCalculates species' velocities and molar flow rates for a binary mixture undergoing equimolar counter diffusion. |

Lecture 49Play Video |
Unimolecular Diffusion (UMD)Derives the flux equations for the unimolecular diffusion of A through a stagnant film of B. |

Lecture 50Play Video |
Unimolecular Diffusion ExampleUses the unimolecular diffusion flux equations to solve for initial flux and time to evaporate a fluid from a beaker. |

Lecture 51Play Video |
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 52Play Video |
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 53Play Video |
Deriving the Differential Equations of Mass TransferDerives the differential equations for mass transfer using the integral method and shell balances. |

Lecture 54Play Video |
Diffusion from Spherical ParticleDetermine the production rate of a species diffusing away from a reactive spherical particle. |

Lecture 55Play Video |
Hunter-Nash Method: Liquid-Liquid Extraction ExampleUses the Hunter-Nash graphical method to solve a liquid-liquid extraction separation problem. |

Lecture 56Play Video |
Mass Transfer Setup to Reactive SurfaceDetermines the concentration of a species with respect to position for flux to a reactive surface. |

Lecture 57Play Video |
Langmuir Isotherms for Binary MixtureDemonstrates 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 58Play Video |
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 59Play Video |
Osmolarity Example (Bio)Covers the basics of calculating osmolarity. |

Lecture 60Play Video |
Osmotic Shock Disruption (Bio)Uses osmotic shock as a method of disrupting (lysing) cells. |

Lecture 61Play Video |
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 62Play Video |
McCabe-Thiele: Stepping off StagesDemonstrates conceptually how to step off stages on a McCabe-Thiele diagram. |