AIChE

Stressed?

October
2002
Career Catalyst
Robert W. Bly
Follow these simple techniques to help you reduce stress and tension on the job.

Innovations in Food Processing

March
2003
Fluids and Solids Handling
B. G. Swanson, G. V.  Barbosa-Cánovas, M. F. San Martín
Today's savvy consumers want processed foods to look freshly prepared, while still meeting all safety requirements. Conventional thermal treatments are inadequate to fulfill this demand. New nonthermal techniques, such as pulsed-electric fields, are...

Reduce Dust Explosions the Inherently Safer Way

October
2003
Fluids and Solids Handling
A. G. Dastidar, Faisal I. Khan, P. R. Amyotte
This article is aimed at the development of a framework for dust explosion prevention and mitigation that explicitly incorporates the principles of inherent safety. As distinguished from engineered and procedural safety features, inherent safety...

Understand Flow Patterns in Glass-Lined Reactors

November
2004
Reactions and Separations
Christopher J. Ramsey, David S. Dickey, Keith E. Johnson , Kevin J. Bittorf
Physical modeling and computer simulation provide insights into the performance of a glass-lined reactor.

Biotransformations for a Green Future

October
2005
SBE Special Section
Susan Truesdell
Enzyme and microbial biotransformations offer green chemistry alternatives for performing difficult or non-selective chemical reactions.

Where is the Chemical Engineering Industry Headed?

January
2007
Special Section
John C. Chen
The chemical enterprise is already global - a trend that is almost certain to continue. What does this trend mean for the chemical engineering profession and for the practicing professional?

Selecting Laboratory Reactors

August
2007
Reactions and Separations
Francesco Picciotti, Marcello Picciotti
This article outlines some of the considerations involved in selecting and specifying a reactor system for research and development applications.

Rx for Pharma

March
2009
Critical Issues
Girish Malhotra, P.E.
Chemical engineers could hold the key that helps pharmaceutical companies — facing pressure to control rising drug prices and competition from generics — reduce their manufacturing costs.

Developing a Position on Nuclear Power

July
2010
Special Section
AIChE’s Nuclear Engineering Division recommends expanding the role of nuclear power and closing the nuclear fuel cycle. <br>

Conference Explores Developing Bioeconomy

March
2008
Special Section
Brad Buecker
Infrastructure, biomass conversion, sources of biomass, and environmental and other impacts are some of the challenges facing the commercialization of biofuels.

Purifying Therapeutic Monoclonal Antibodies

May
2008
SBE Special Section
Amit Mehta, Amy Len, Benedicte Lebreton, Bradley Wolk, Jace Fogle, Martha Lovato Tse, Nuno Fontes, Robert van Reis, Roshan Shrestha
Eliminating the affinity chromatography step in the mAb purification process trims equipment requirements, shrinks the plant footprint— and reduces costs.

Optimize Pipeline Design for Non-Newtonian Fluids

March
2002
Fluids and Solids Handling
Alejandro Anaya Durand, Cinthya Alejandra Anguilar Guerrero,  Edgar Amaro  Ronces
Use this graphical method to determine pipe diameter, fluid temperature and pressure drop for laminar and turbulent flow.

Decommissioning Process Plant Facilities

December
2002
Management
Lou Phillips
Whether the plan is to shut down an entire plant, or just a portion of it, a definitive plan must be in place. Here is a step-by-step procedure to guide you through the process.

Optimizing Crystallizer Scaleup

June
2003
Fluids and Solids Handling
Wayne Genck
Explore how mixing parameters impact the crystallization process and recommend ways to improve the likelihood of successful scaleup. The concepts of nucleation and growth, types of mixing, design considerations, agitator parameters and scaleup...

The Price is Right -- Or Is It?

December
2003
Management
Glen Rosentrater - 
Contractors' quotes often differ significantly -- by up to 30% is not uncommon, and may be legitimate. Here's how to analyze bids to be able to award a fairly priced contract.

Leadership: The Skill Most Needed

June
2004
Career Catalyst
Stanley I. Proctor
Do you have leadership potential? This article explores the differences between leadership and management, the qualities of a good leader, different leadership styles and where they are effective and not effective, and other issues.

Optimizing Batch Operations

January
2006
Reactions and Separations
Kah Loong Choong, Robin Smith
Use this novel method to optimize the operating conditions as they vary through time in batch processes.

Use Cascade Analysis to Optimize Water Networks

July
2006
Environmental Management
Dominic Chwan Yee Foo, Yin Ling Tan, Zainuddin Abdul Manan
This numerical technique for identifying fresh water and wastewater targets eliminates the tedious and time-consuming steps of graphical targeting approaches. Use it to complement the graphical techniques in the design and retrofit of water networks.

Mitigating Global Climate Change Through Power-Generation Technology

November
2007
Critical Issues
Frank Princiotta
With the Intergovernmental Panel on Climate Change set to release its Fourth Assessment Synthesis Report later this month, now is a good time for chemical engineers to take a look at this topic. This article provides a succinct integration of...

Contemplating a New Phase of Your Career

April
2010
Career Catalyst
Lisa L. Walker
Today’s employment environment has altered the concept of “career.” If you are attempting to change jobs or enter a different industry — or even considering a second career — it is important to understand your motivations and proceed with care.

Reduce Risk When Sourcing Abroad

October
2010
Fluids and Solids Handling
Gregory T. Benz, Ling Du
Purchasing lower-cost process equipment from vendors in developing nations can be an attractive proposition in times of economic austerity. When sourcing outside local channels, keep the points discussed here in mind to avoid costly problems that go...

Find Mixing Success through Failures - Part 1

October
2008
Fluids and Solids Handling
David S. Dickey, Gary K. Patterson
Understanding when and why mixing fails in the laboratory is often the only way of avoiding a similar failure in a production-scale reactor.

Control and Optimize Nonlinear Systems

February
2003
Instrumentation
Andrew C. Burden, Pradeep B. Deshpande, Roberto Z. Tantalean
Turbocharging a contrained model predictive controller (CMPC) with fuzzy logic allows CMPCs to be applied over nonlinear systems

Simulating Aqueous Processes

September
2003
Reactions and Separations
Joel B. Christian
Simulation that includes aqueous modeling can also account for full vapor/liquid/solid equilibria modeling, including redox chemistry.

People - The Key to Successful Project Management

September
2004
Career Catalyst
Eldon R. Larsen
While Gantt charts, timelines, budgets, resource constraints, quality challenges, performance measures, and other tools are important, they are neither meaningful nor effective without people.

Beware of Pitfalls of Carbon Dioxide Freezing Prediction

March
2005
Heat Transfer
Steve Chafin , Tim Eggeman
Carbon dioxide freezing in a cryogenic system can result in plugging and other operational problems. This article offers insights into the carbon dioxide freezing phenomenon.

Boost Your Group’s Performance

September
2005
Career Catalyst
Charles Gillard
Working with employees to define “doing a good job” can improve organizational performance as well as employee satisfaction.

Dealing with Climate Change at the Local Level

February
2008
Opinion
Paul A. Jennings
Whatever problems may be caused by climate change, engineers will be expected to solve them.Now is the time to begin addressing the issues at the local and regional scale.

Getting to Win-Win

September
2008
Career Catalyst
Eldon R. Larsen, Ryland W. Musick Jr.
Conflict is an almost unavoidable part of life and work, and it can lead to surprisingly constructive opportunities. Here is a discussion of how to manage conflicts— and how to make the most of them when they occur.

Modeling Reactive Absorption

January
2009
Reactions and Separations
Eugeny Kenig, Panos Seferlis
Effective modeling of reactive absorption enhances system design, improves experiment planning for parameter-estimation, and facilitates process operation and control decisions.

Demonstrating CCS Integration

August
2011
Special Section
Nick Irvin, P.E., P.G., Richard A. Esposito
The largest, fully integrated process for separating CO2 from fluegas and compressing it to a supercritical fluid, transporting the CO2 by pipeline, and injecting the CO2 into a saline reservoir is now underway at the Plant Barry generating station...

The Future of Coal-Based Power Generation

March
2008
Special Section
James R. Katzer
Despite its image as a dirty fuel, coal remains an economic choice for baseload power generation—and it can, in fact, have very low emissions.

Take the Tedium Out of Writing Process Descriptions

February
2001
Instrumentation
Michael J. Gentilcore
Setting up a special function and a shorthand system on a spreadsheet can improve the descriptions needed for implementing a process control system, while minimizing the monotony in writing them.

Burning Bright: Trends in Process Integration

July
2001
Process Development
Nick  Hallale 
Process integration has a far wider scope and touches every area of process design. Industries are making more money from their raw materials and capital assets, while becoming cleaner and more sustainable.

Write a Better Brochure

October
2001
Career Catalyst
Robert W. Bly
Engineers are often called on to review product brochures and ads for equipment and processes. Here are six tips for working more effectively with an ad agency or corporate marketing-communications department to create good product literature.

Squeeze More Out of Complex Columns

July
2002
Reactions and Separations
Piyush Shah
These distillation setups can cut capital and operating costs by up to 30%, and increase separation efficiency. Here is a straightforward method for evaluation.

Succeed in Business in Eastern Europe

November
2002
Career Catalyst
Lionel F. Laroche, Susan Morey
Eastern Europe is a significant potential market for Western corporations. There are plenty of opportunities for success if you learn to do business in a way that meshes with Eastern European expectations of how business should be done.

Work Effectively with Your Patent Attorney

April
2003
Career Catalyst
Steven J. Helmer
By understanding the basics of patent law and by establishing a close working relationship with your attorneys, you can ensure that you receive the broadest possible patent protection.

Shaping a New Role for the Operator

May
2004
Management
Ian  Nimmo, Peter  Bullemer,  Sandra  Foreman
In the future, operating teams may proactively manage their plants to maximize safety and minimize environmental impact, while pushing the processes to their optimal limits. Here's how to achieve the necessary paradigm shift by giving operators an...

Pipeline Pressure Drop: A New Design Correlation

June
2006
Fluids and Solids Handling
Roger Gilmont
A linear equation has been derived to accurately calculate the flowrate of fluids in the laminar and turbulent regions, and to derive an equation for use in the transitional regions.

Industry and SBE News

October
2007
SBE Special Section
Dr. George Georgiou to Receive SBE's James E. Bailey Award; Averting an Epidemic— Novel Device Detects Avian Flu Virus in Less than Half an Hour; Cell-Free Protein Sythesis Comes of Age; Genetically Engineering Microorganisms into Pharmaceutical...

Evaluating Cooling Tower Upgrades

May
2008
Heat Transfer
Tom Dendy
When considering improvements to cooling towers, it's important to perform an economic analysis of the options.

Minimize Scale-Up Risk

March
2010
SBE Special Section
Bertil Stromberg, J. Brad Cort, Thomas Pschorn
Proven commercial-scale equipment already exists for many operations involved in producing biofuels from lignocellulosic feedstocks.

Identifying Corrosion and Its Causes

April
2011
Fluids and Solids Handling
Gary Geiger, Mel J. Esmacher, P.E.
An important first step in maintaining equipment reliability and efficiency is understanding the various types of corrosion damage that can occur.

An Introduction to Immunity and Vaccines

November
2011
SBE Special Section
Derek Lapiska
An understanding of the basic approach to creating vaccines, as well as how vaccines confer immunity, is essential to developing safe and cost-effective formulations.

Women ChEs Make Progress Toward Equity

August
2003
Special Section
Irene Kim
Women in the chemical engineering profession are gaining equality -- to varying degrees -- in numbers, salary and worklife environment.

Process Control for Microreactors

August
2001
Instrumentation
Don  Humbert, Lech  Znamirowski, Olgierd A. Palusinski, Sarma Vrudhula
Field-programmable analog arrays coupled with microreactor technology promise to change the way plants are built, as well as the methods by which their processes are designed and controlled.

Good Drug Therapy: It's Not Just the Molecule - It's the DELIVERY

February
2004
Special Section
Rita D'Aquino
In today's competitive marketplace, biopharmaceutical companies are seeking effective and user-friendly drug-delivery platforms for their drug molecules. Miniaturized, microfabricated and nanofabricated devices that can be implanted in the body are...

Clarifying Centrifuge Operation and Selection

August
2004
Fluids and Solids Handling
Victor Norton ,  William Wilkie
Before selecting a centrifuge for your application, understand its principles of operation and investigate the key process variables.

Pumping System Head Estimation

February
2005
Fluids and Solids Handling
James Anthony
These spreadsheets highlight losses, uncertainties and value of power used, helping you optimize pumping system designs and save on operating costs.

Fulfilling the Promise of Nanomedicine

February
2006
SBE Special Section
Cristina Roman Vas, Rita D'Aquino with Tim Harper
Leveraging nanotechnology in the life science industries has given scientists new tools with which they have the potential to transform the world of medicine.

Tools to Model Multiphase Separation

June
2007
Fluids and Solids Handling
David Connolly, Saeid Mokhatab, Timothy Newton
The flow fields in multiphase separators are often extremely complicated, making it difficult to model such systems. Computational fluid dynamics (CFD) and visual dynamic modeling (VDM) can be used together to overcome some of the challenges.

Use Model-Predictive Control to Improve Distillation Operations

January
2008
Instrumentation
Daniel R. Webb, Robert D. Rounding, Robert J. Conroy, Umesh Mathur
This methodology, based on steady-state and dynamic simulation, can be used to develop the necessary models— and avoid disruptive and costly step testing to the extent feasible.

Predicting Emissivities of Combustion Gases

June
2009
Heat Transfer
Alireza Bahadori, Hari B. Vuthaluru
Use this new correlation, which employs easy-to-solve algebraic equations to estimate gas emissivities, to simplify the design and optimization of boilers, furnaces and other combustion equipment.
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