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Separations

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Separations Division (SEP)

The SEP division provides technical programs for meetings with coverage of a variety of currently used and novel methods of separation. Division members can exchange knowledge of technical publications, computer programs, databases, separation research centers, networks and programs.

Single Use Centrifuge- CHO Clarification

Conference Presentation
AIChE Annual Meeting
Thursday, November 7, 2013 - 4:00pm-4:30pm
Abstract Text: The large scale economic collection of proteins is an important problem for the Biotechnology industry. Generally , proteins are...

Scaling-Up in Supercritical Fluid Chromatography

Conference Presentation
AIChE Annual Meeting
Thursday, November 7, 2013 - 9:45am-10:15am
Supercritical fluid chromatography (SFC) is already recognized as the method of choice for the preparative separation of chiral molecules in...

Reactivity of Biopolymers in Ionic Liquids

Conference Presentation
AIChE Annual Meeting
Wednesday, November 6, 2013 - 12:45pm-1:15pm
Ionic liquids are gaining increasing acceptance as novel solvents for chemical transformations. This has included a recent focus on the use of ionic...

Phase Behavior of Gases in Ionic Liquids

Conference Presentation
AIChE Annual Meeting
Tuesday, November 5, 2013 - 3:15pm-3:30pm
This presentation will emphasize the importance of characterizing the global phase behavior of gases in ionic liquids and how this can provide...

Chromatographic Scale-Up On a Volume Basis

Conference Presentation
AIChE Annual Meeting
Tuesday, November 5, 2013 - 8:30am-9:00am
The scale-up of a chromatographic separation is in principle a simple procedure since the process parameters are scalable in a linear fashion. The...

The Potential Of Osmotic Membrane Dehumidification

Conference Presentation
AIChE Annual Meeting
Monday, November 4, 2013 - 4:00pm-4:15pm
THE POTENTIAL OF OSMOTIC MEMBRANE DEHUMIDIFICATION Arthur Kesten, Jeffrey McCutcheon, Ariel Girelli and Jack Blechner An osmotic membrane...

Column Revamps

Conference Presentation
Southwest Process Technology Conference
Thursday, October 3, 2013 - 1:30pm-4:30pm
Distillation and absorption columns sometimes need to be revamped to achieve capacity increases, separation improvements or energy consumption...

Scale-up of SAPO-34 Membranes for CO2/CH4 Separation

Conference Presentation
AIChE Annual Meeting
Monday, October 29, 2012 - 9:30am-10:00am
SAPO-34 membranes have pores with a diameter of approximately 0.38 nm and have the potential to be used for large scale removal of CO 2 impurities...

The Mixed Matrix Membrane Story

Conference Presentation
AIChE Annual Meeting
Monday, October 29, 2012 - 9:00am-9:30am
The talk will highlight the evolution of Mixed Matrix Membranes (MMM), developed in the mid-1980s. The talk will first provide an introduction into...

Ionic Liquids

Archived Webinar
Aug 26, 2009
This webinar will cover the use of Ionic Liquids for both liquid and gas separations, emphasizing how the choice of anion, cation and functional...

A Century of Separations: CO2 Recovery: Myth and Legend

Conference Presentation
AIChE Annual Meeting
Thursday, November 20, 2008 - 2:00pm-2:30pm
Carbon dioxide recovery will be the major challenge for the separations community for the foreseeable future. Various separations technologies are...

Revive Your Columns with Cyclic Distillation

December
2015
Reactions and Separations
Costin Sorin Bîldea, Anton A. Kiss
This process intensification technique involves changing a tower’s internals and operating mode and the separate movement of the liquid and vapor phases. This can significantly increase column throughput and reduce energy requirements, while improving separation performance.

Ten Distillation Revamp Pitfalls to Avoid

February
2014
Back To Basics
Doug Bouck
Projects aimed at improving distillation column operation may encounter a variety of hurdles. This article looks at ten common problems and provides guidance on how to avoid them.

Diagnosing Maldistribution in Towers

May
2007
Reactions and Separations
Simon X. Xu
Gamma CAT-scan technology makes possible the collection of much more vital online process information than conventional diagnostic techniques.

Realistically Predict Capacity and Pressure Drop for Packed Columns

July
2007
Reactions and Separations
Emil Abkar, Khashayar Afshar, Henry Z. Kister, Jeffrey Scherffius
Generalized pressure-drop correlation (GPDC) charts have been the standard for predicting packing flood points and pressure drops. This article guides engineers on the correct and incorrect uses of the GPDC interpolation procedure, and updates the...

Troubleshooting Distillation Simulation

June
2006
Reactions and Separations
Stanislaw K. Wasylkiewicz
A tool called azeotrope pressure sensitivity analysis (APSA) can shed light on the dependence of an azeotrope's composition and temperature on changes in pressure.

Be Smart about Column Design

November
2012
Reactions and Separations
Daniel R. Summers, P.E., Mark Pilling, P.E.
Optimizing distillation equipment and processes can improve both the profitability and the greenness of an operation.

Distillation Troubleshooting

March, 2006
The last half-century of research on distillation has tremendously improved our understanding and design of industrial distillation equipment and systems. High-speed computers have taken over the design, control, and operation of towers. Invention and innovation in tower internals have greatly...

Solid-Liquid Separation: A Guide to Centrifuge Selection

July
2012
Back To Basics
Tom Patnaik
Centrifugation is a necessary step in many pharmaceutical and chemical production processes. These guidelines will help chemical engineers better understand the process of centrifuge selection.

CEP: AIChE Journal Highlight - A New Spin on Separations

September
2012
Journal Highlight
The microelectronics industry has been revolutionized by technologies that boast ever-increasing capabilities in increasingly smaller areas. Now, the ability to pack high functionality into smaller devices is poised to transform the chemical process...

Design and Control of Distillation Systems for Separating Azeotropes

March, 2010
Hands-on guidance for the design, control, and operation of azeotropic distillation systems Following this book's step-by-step guidance, readers learn to master tested and proven methods to overcome a major problem in chemical processing: the distillation and separation of azeotropes. Practical in...

Choosing Trays and Packings for Distillation

September
2009
Back To Basics
Bruce S. Holden , Mark Pilling
Tower-related problems can be difficult, time-consuming, and expensive to diagnose and fix. Here’s how to avoid difficulties and improve operating efficiency.

Oxygen and Nitrogen: Onward and Upward

January
2009
News Feature
Suzanne Shelley
Innovative advances continue to benefit all three of today's air separation technologies, helping to reduce power consumption and capital costs, and, in turn, expand their markets.

Improving Reverse Osmosis Performance

September
2010
Reactions and Separations
Loraine Huchler
Follow these guidelines for monitoring, evaluating, and troubleshooting RO units to ensure reliable and efficient system operation.

Converting a Commercial Distillation Column into a Research Tower

July
2005
Reactions and Separations
Ralph Weiland
Operating a column under actual distillation conditions is important for obtaining commercially valid hydraulic data. This article describes how a column was modified to operate in either a production or a research mode to collect hydraulic and mass...

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