AIChE

Propel Your Pneumatic Conveying System to Higher Efficiency

April
2001
Fluids and Solids Handling
Francisco  Cabrejos, Herman  Purutyan, Thomas G. Troxel
For new and existing installations, there are many system and component choices available. Here’s how to narrow down the options to make the appropriate selection for optimal performance.

Accurately Estimate Production Costs

April
2002
Management
In a multiproduct chemical complex, determining production costs is no simple matter. Here's a logical method that can help.

Give Memorable Presentations

January
2003
Career Catalyst
Robert W. Bly
These guidelines will help you prepare and deliver a more exciting presentation.

Handling Flammable Liquids

July
2003
Fluids and Solids Handling
James C. Mulligan
Identify electrostatic hazards associated with liquid processing and understand the precautions available to control them.

Control Commissioning Costs

August
2004
Management
D. P. Lal
This procedure for commissioning a large chemical complex can help reduce the time required and minimize expenses.

Understanding Management Styles

February
2005
Career Catalyst
Peter E. Friedes
Are you naturally a “relater” or a “requirer”? Understanding how you relate and require will help you make the changes you need to be a more effective manager.

Selecting Agitator Seals for Bioprocessing Applications

January
2008
Fluids and Solids Handling
Gregory T. Benz, William Ho Liam Teng
Issues such as sterility, isolation and contamination must be considered when choosing seals for use in biotech and pharmaceutical processes. This overview describes common types of seals and offers guidance on selecting the appropriate seal for...

Principles of Bioprocess Control

November
2009
SBE Special Section
Joseph S. Alford
The use of complex living organisms, process variation, and lack of real-time measurements of key parameters are some of the challenges involved in automating a bioprocess. This article explains an indirect approach to monitoring and controlling a...

Gazing into an Energy Crystal Ball

June
2010
On The Horizon
Vern W. Weekman Jr.
By mid-century, new energy sources could be integrated into the existing chemical-conversion infrastructure, but additional research is needed to fine-tune the technologies and improve efficiencies and economics.

Bioreactor Design for Chemical Engineers

August
2011
Back To Basics
Gregory T. Benz
Fermentation processes are based on chemical engineering principles. Understand these concepts to achieve optimal bioreactor design.

Bioprinting: Directed Tissue Self-Assembly

December
2007
SBE Special Section
Roger Markwald, Vladimir Kasyanov, Vladimir Mironov
Imagine eliminating patient waiting lists for organ transplants. Bioprinting holds the promise of making this happen, but, must research must be done first.

Effectively Control Column Pressure

January
2001
Reactions and Separations
Andrew W. Sloley 
Maintaining proper pressure can play a crucial role in the stable operation of a distillation column. Here’s how to select the most appropriate pressure-control scheme.

Take Another Look at Steam Traps

June
2001
Fluids and Solids Handling
S. Raghavi  Chari
Think twice before installing a steam trap. In the case of superheated lines, steam traps may prove to be a waste of time, effort, and money

Air Heater Cleaning Simplified

October
2001
Heat Transfer
Brad Buecker
This high-pressure water washing technique can be used to clean Ljungstrom-type air heaters.

Process Intensification: Has Its Time Finally Come?

October
2003
On The Horizon
Costas Tsouris, Joseph V. Porcelli
Many new technologies are being developed, but several important barriers must be overcome before process intensification is widely adopted.

Get the Most for Your Emissions Testing Buck

November
2004
Environmental Management
Robert M. Neimeier
A successful emissions testing program involves understanding the purpose of the testing, preparing a request for proposal, eveloping a protocol and entrusting the job with the right person.

Industrial-Scale Flare Testing

May
2006
Environmental Management
Charles Baukal, Jianhui Hong, Mahmoud Fleifil, Robert Schwartz
Advanced flare testing at full scale can help to ensure that the system operates as designed. This article explains what's involved and the parameters that should be measured and evaluated to demonstrate performance, reliability and safety.

Prepare an Effective Intellecutal Property Business Plan

August
2009
Management
Steven R. Hansen
The intellectual property component of a business plan is instrumental in protecting and promoting engineering innovations. Here’s how chemical engineers can provide valuable input into the preparation of an IP business plan.

Evaluating and Documenting Tower Performance

February
2010
Reactions and Separations
Daniel R. Summers
A good performance evaluation can lead to a significant improvement in column performance and establish a basis for future tower evaluations. <br>

Use Oxygen to Improve Combustion and Oxidation

July
2010
Reactions and Separations
Nancy C. Easterbrook, Reed J. Hendershot, Timothy D. Lebrecht
Substituting oxygen for air is often a low-cost, easy-to-implement option that can reduce capital costs, lower emissions, and improve process flexibility and reliability.

Understand the Fundamentals of Wastewater Treatment

October
2011
Back To Basics
Mukesh Doble, Venkatachalam Geetha
Wastewater treatment technologies range from membrane filtration to UV radiation to activated sludge. Compare their advantages and disadvantages to select the appropriate methods for your application.

How Might Biofuels Impact the Chemical Industry?

March
2008
Special Section
Keith J. Watson, Mark E. Jones, William F. Banholzer
Considering the range of possibilities and constraints, a major transformation of the chemical industry's current capital structure is unlikely for at least a few decades.

Realize Greater Benefits from CFD

March
2001
Fluids and Solids Handling
Ahmad H. Haidari, Andre  Bakker,  Lanre M. Oshinowo
Computational fluid dynamics has moved from mainframes to PCs and laptops. Newer and better software lets you conduct analyses not possible before, and regular engineers, not just experts, can now carry out CFD.

Over 40? Make the Most of It!

August
2001
Career Catalyst
Bettina Seidman
Savvy employers are learning to value experienced engineers. Here's how you can take advantage of this trend.

Design Reactors via CFD

December
2001
Reactions and Separations
Ahmad H. Haidari, Andre Bakker, Elizabeth M. Marshall
Using computational fluid dynamics to design commercial-size batch and continuous reactors can eliminate subjective experience and empiricism, leading to better-designed, more-efficient units.

Green Factories for Pharmaceuticals

January
2003
Special Section
Rita D'Aquino
A number of companies are honing techniques to produce a wide variety of pharmaceuticals, such as therapeutic proteins and monoclonal antibodies in plants.

How Sustainable are Your PSM Processes?

June
2003
Safety
Martin C. Welch, R. Bruce Hartman
Use this audit procedure to evaluate the current performance of your process safety management processes as well as their future viability.

Streamlining Crystallization Process Design

January
2004
Fluids and Solids Handling
Christianto  Wibowo, Ka M. Ng, Lionel O'Young
Use phase diagrams to develop reliable crystallization processes quickly and cost effectively.

Knock, Knock. Who’s There? The EPA Inspector!

July
2004
Environmental Management
Lee D. Hoffman ,  Ronald W. Zdrojeski
Preparation and training can help minimize your facility’s — and your own — vulnerability to criminal prosecution for environmental violations.

Designing a Scrubber to Control Emergency Releases

July
2005
Environmental Management
Anne McQueen, Jeffrey Michael Forde, Joseph W. Hower., Sunil Ojha
Here are guidelines for determining the scope of the control system, sizing the enclosure, and specifying the scrubber design.

Simplify Wastewater Treatment Process Design

January
2006
Environmental Management
Apostolos Vlyssides, Elli Maria Barampouti, Sofia Mai
Unlike time-consuming conventional methods, this approach to designing a dissolved air flotation (DAF) plant requires only the physical characteristics of the flocs — their size and density, flowrate and temperature.

Avoid the Pitfalls of Bioprocess Development

August
2006
Process Development
Mukesh Doble
This article presents the challenges that an engineer might encounter when designing or scaling up bioprocesses and offers practical solutions, including those cited in literature.

Selecting and Using Bolted Head Closures

April
2007
Fluids and Solids Handling
John C. Birkmire, P.E.
Proper design, fabrication, assembly and operation of a pressure vessel closure are essential to ensuring product containment, integrity and quality.

Obtain the Best Physical Property Data

May
2009
Fluids and Solids Handling
Kevin G. Joback
Physical property values are essential for many chemical engineering tasks. This article reviews sources of physical property data, discusses the use of experimental methods to measure properties, and details several types of estimation techniques.

Preparing Invention Disclosures

April
2010
Management
William D. Hall
The patent process can be a costly journey down a long and winding road. An invention disclosure serves as a roadmap for preparing the patent application and ultimately obtaining a valid, enforceable patent.

Integrate Compressor Performance Maps into Process Simulation

June
2011
Computational Methods
Grant Stephenson
Transforming the performance maps to a reduced coordinate system that is independent of suction conditions and rotational speeds allows these curves to be accurately incorporated into a process simulator.

Institute News

May
2012
Institute News
Read the latest Institute News reported by CEP.

Properly Clean Out Your Organic Heat-Transfer Fluid System

May
2001
Heat Transfer
Ander  Beain, Jay  Heidari,  Conrad  Gamble
Follow these guidelines for applying side-stream filtration to on-line cleaning, and chemical or mechanical cleaning to equipment that has been drained of fluid.

Profiting From Your Pumping System

September
2003
Fluids and Solids Handling
Aimee McKane  , Vestal Tutterow,  Don Casada
Identify ways to minimize the lifecycle costs of your pumping system

Sparking Creativity

March
2005
Career Catalyst
James D. Weith
Try some of these strategies to light your creative fires and to fan their flames.

Integrate Process Simulation and Process Synthesis

October
2005
Computational Methods
Dominic Chwan Yee Foo, Michael Lynn McGuire, Murugan Selvan, Zainuddin Abdul Manan
The design of a new process using computer simulations to analyze a process flowsheet based on the onion model can save time, effort and, ultimately, money.

Who Done It? The ABCs of Environmental Forensics

March
2006
Environmental Management
Jeffrey Bolin, Matthew Schroeder, Michael Sklash
These tools and techniques can be used to make sense of soil or groundwater contamination - where it came from, who is responsible for it, and how to fairly allocate the costs to clean it up.

Bioprocess Design for a Novel Vaccine

November
2006
SBE Special Section
Barry C. Buckland
The challenges of vaccine development are not limited to identification of suitable antigens, adjuvants and delivery methods, but include regulatory, technical and manufacturing hurdles in translating a vaccine candidate to the clinic.

Effectively Manage the Lifecycle of a Product

July
2007
Information Technology
Baha Korkmaz, Marty Martin
By incorporating the batch standards S88 and S95 into the entire product lifecycle, companies can optimize their processes and project management. This enables them to rapidly get their products to market — a critical factor in staying competitive.

Eliminate Iteration from Flow Problems

March
2008
Fluids and Solids Handling
John D. Barry
This article introduces a novel approach to solving flow and pipe-sizing problems based on two new dimensionless quantities that are independent of line size and flow.

Simplify Experimental Design

January
2010
Computational Methods
Joseph F. Louvar
Save time and money by using this approach to fractional-factorial design of experiments (DOE) for studies involving six or seven variables. <br>

Nuclear Renaissance: A Flawed Proposition

July
2010
Special Section
Anthony D'Agostino, Benjamin K. Sovacool
Nuclear power has never been safe and it never will be. Efficiency gains and investment in renewable sources of energy will be sufficient to power the planet without resorting to nuclear reactors.

Understanding Steam Traps

February
2011
Back To Basics
James R. Risko
Steam trap failure can affect process operations and reduce profits. Choosing the right steam traps can improve reliability and reduce cost.

Harnessing Natural Energy

March
2008
Special Section
Travis W. Walker
Before solar and wind energy can be widely exploited, a method for storing the energy provided by these intermittent sources and releasing it as demand arises must be developed.

Keys to Bioreactor Selection

March
2002
Reactions and Separations
John A. Williams
A few basic types of bioreactor designs are used to produce a wide range of products, from antibiotics to foods to fuels. Here's how to pick the best options for your application.

Applying Bus Technologies in Process Control

December
2002
Instrumentation
Ed Smigo
Fieldbus technologies have become increasingly popular in process control applications. This article highlights the practical applications and economics of various buses, so that an engineer can choose the best one for his or her process.
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