AIChE

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, Thomas Pschorn, J. Brad Cort
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.

Commencement Advice for Young Job Seekers

May
2012
YPOV
Arjun Gopalratnam
This is the time of year when thousands of undergraduates are completing their degrees and beginning their careers and chemical engineers. As I travel to chemical engineering schools to attend AIChE's spring regional student conferences, the...

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, Sarma Vrudhula, Olgierd A. Palusinski
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
 William Wilkie, Victor Norton
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
Saeid Mokhatab, David Connolly, 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
Robert J. Conroy, Daniel R. Webb, Robert D. Rounding, 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
Hari B. Vuthaluru, Alireza Bahadori
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.

Your Personal Genome for $1,000?

November
2009
SBE Special Section
IBM scientists from four fields — nanofabrication, microelectronics, physics and biology — are collaborating to develop a “DNA transistor” that could make obtaining a personalized genome analysis easier, faster, and cheaper — ultimately as low as $...

Measuring and Communicating Sustainability through Eco-Efficiency Analysis

December
2010
Environmental Management
Peter Saling, Bruce W. Uhlman
Eco-efficiency analysis promotes an understanding of the economic and environmental trade-offs over products’ lifecycles, and supports informed, strategic decision-making in all areas of a business, from spurring innovative product development to...

Selecting the Proper Flare System

July
2011
Back To Basics
Wes Bussman, Charles E. Baukal Jr., P.E., Adam Bader
Flares allow for the safe, effective disposal of gases and liquids, by acting as relief devices when a plant must quickly dispose of product within its system to prevent overpressurization and potential explosions.

Optimize Heat Exchanger Cleaning Schedules

June
2001
Heat Transfer
Chris D. Gosling, Bruce A. Barna, Brendan R. O'Donnel
Get the most out of your heat exchanger by evaluating the trade-offs between a one-time expenditure and reduced operating expenses, increased income, and/or longer operating life span. Brendan R. O'Donnell - Bruce A. Barna - Chris D. Gosling -

Integrate EHS for Better Process Design

February
2002
Process Development
Lisa Bendixen
Get a jump on process development by addressing environmental, health and safety (EHS) issues together early in the design and development cycle. The result will be a better process and lower costs.

Improve Your Reading Efficiency and Speed

March
2003
Career Catalyst
Robert W. Bly
Are you feeling overwhelmed by the daily influx of memos, letters, reports and journals? These tips will help you develop a systematic method for dealing with the endless stream of material that is essential to your job.

Preparing for GHG Inventory Verification

April
2004
Environmental Management
- Lauren M. Sandler, James T. Wintergreen
To ensure that the greenhouse gas inventory is accurate and complete, prepare for eventual third-party verification during the planning and data collection stages.

Improve Solids Handling During Thermal Drying

November
2004
Fluids and Solids Handling
Thomas G. Troxel , John W. Carson, Herman Purutyan
Follow these guidelines for ensuring the proper flow of slurries, pastes and wet powders to achieve a dried product with the desired characteristics.

Enzyme Discovery: Screening, Cloning, Evolving

October
2005
SBE Special Section
Per Falholt, Thomas Schaefer, Glenn Nedwin
Enzymes are nature’s answer to many industrial and environmental challenges. This article details the latest approaches to enzyme discovery and evolution.

Educational Perspective on the Future of Chemical Engineering

January
2007
Special Section
S. Ranil Wickramasinghe, Gary K. Patterson, James T. Cobb Jr.
Diversification, globalization, emerging technologies...Times have certainly changed for chemical engineers. But, has the undergraduate chemical engineering curriculum kept pace?

Properly Select Equipment for SIP Systems

August
2007
Fluids and Solids Handling
Tony George
Sterilization-in-place (SIP) systems are essential to the operation of many pharmaceutical and biotech facilities. This article reviews design considerations, selection criteria and performance expectations for control valves, regulators, isolation...

Analyzing Equilibrium when Noncondensables Are Present

April
2008
Environmental Management
Allen Hatfield
With the simplifying assumption that all of the noncondensable gases exit via the vapor stream, material balances and equilibrium calculations can be used to determine the compositions of the emissions streams leaving a control device.

Examining X-Ray Technology

March
2009
Fluids and Solids Handling
Ray Spurgeon
Use X-ray inspection to see whether your product is contaminant-free and packaged properly.

Successfully Navigate the Negotiation Process

February
2010
Career Catalyst
Lisa L. Walker
Employment negotiations begin even before a job offer is extended. Having a clear plan of action, and an understanding of your objectives and those of your employer, will help you make the most of this important process. <br>

Reduce Your Compressed Air Costs

October
2011
Fluids and Solids Handling
Bill Scales, Ron Marshall
Annual operating expenses for compressed air systems can exceed the equipment’s purchase price. Follow these seven steps to implement efficiency measures that yield cost reductions.

10 Tips for Managing Your Career

July
2001
Career Catalyst
Bettina  Seidman
Get interpersonally fit by improving your work relationships and honing your communication skills

Succeed in Business in Germany and Switzerland

November
2001
Career Catalyst
Leonore  Clauss, Lionel F. Laroche 
Interactions with the Germans and the Swiss may seem easy, but it's important to understand their way of thinking and their approach to doing business.

Use E-mail Effectively

December
2002
Career Catalyst
Gary Blake
These tips will help improve your e-mail style and make sure that your e-mail is effective intrinsically, as well as fitting the new electronic expectations of a wide range of cyber colleagues.

Think Outside the Box to Reduce Wastes

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

Marketing Your Professional Expertise to Attorneys

December
2003
Career Catalyst
Rosalie  Hamilton
When you see an expert testify in a legal case on TV and think I could do that, you may be right. Here's what you need to know to become a litigation support consultant.

What’s the Price of Steam?

July
2005
Heat Transfer
Petar Varbanov , Robin Smith
Realistic steam prices are necessary for the efficient operation of a chemical production site, both to allocate realistic costs to the different businesses on the site and to provide a true economic incentive for energy conservation.

Building Models from Simulator Runs

January
2006
Computational Methods
Aad van Veldhoven, Magali de Macedo
The design-of-experiments approach has the advantage of providing the framework to build complex models with minimum use of time and effort.

Improving Heat Exchanger Designs

April
2007
Heat Transfer
David C. King, Thomas G. Lestina, R. Stanley Kistler, Christopher A. Bennett
This article defines and explains the factors that affect heat exchanger design margins. With the proper application of design margins, capital costs can be lowered and plant operations improved.

Nanomaterials: What are the Environmental and Health Impacts?

December
2008
Critical Issues
Nastassja Lewinski
As with previous emerging technologies, there have been uncertainties and concerns about the environmental and health risks associated with nanotechnology. This article reviews some of the ongoing efforts to better understand and characterize...

Realizing the Promise of Wireless

May
2009
Instrumentation
Bob Karschnia, Peter Zornio
Innovation drives the growth of wireless technology, as successful applications demonstrate cost savings, reliability, safety, and ease of use.

Making Smarter Clean-Tech Investments

October
2010
Management
Adam Javan, William J. Grieco
Appropriate due diligence can help investors sort through the hype and identify the most viable ventures.

Selecting a Heat Exchanger Shell

June
2011
Back To Basics
Thomas G. Lestina, P.E.
The first step in specifying a shell-and-tube heat exchanger is choosing the right shell to meet process requirements.

Basics of Centrifugal Pump Selection

May
2002
Fluids and Solids Handling
Michael B. Smith, Drew B. Schiller, Bernadette Pyzdrowski, Kimberly Fernandez
Tips for specification and operation that provide for cost-effectiveness and reliability.

Outsourcing Environmental Compliance

October
2002
Environmental Management
Stephen W. Blocki
Save money and reduce risks by contracting responsibility for maintaining compliance to a pollution-abatement expert.

Guidelines for Crystallizer Selection and Operation

October
2004
Reactions and Separations
Wayne Genck
Continuous crystallizers serve a wide range of applications in the chemical process industries. Optimize system performance by heeding these practical design and operating principles, which apply to the forced circulation (FC), draft-tube-baffle (...

Prepare Now for REACH Compliance

March
2005
Environmental Management
Beth Sirull
Pending legislation would require companies that make or use chemicals in the European Union to register those substances.

Specifying Vessels for High-Pressure Dust Collectors

October
2005
Environmental Management
Todd Russelburg
ASME codes and standards govern the design, fabrication, testing and certification of high-pressure dust collector vessels. This article will assist you in working with a code vessel designer and/or manufacturer.

Designing a Facility for API Development

March
2006
Plant Design
Yasha Zelmanovich, Terrence Fay
Kilo labs are instrumental in scaling up the production of active pharmaceutical ingredients. This article discusses the critical factors that must be considered to design such a facility.

Mother Nature as both Doctor and Patient

November
2006
SBE Special Section
Edwin N. Lightfoot
Once we have grasped some essentials of this riotous, but surprisingly well ordered world, we shall find our transport phenomena background to have real utility.

Use Spreadsheets to Estimate Modeling Parameters

February
2008
Computational Methods
Tomas B. Co
Dynamic process modeling based on non-uniformly sampled data and multiple sampling runs, even for nonlinear systems, can be performed using spreadsheet implementations of the weighted-least-squares (WLSQ) and Runge-Kutta WLSQ methods.

Save Energy Through Automation

January
2010
Instrumentation
Douglas C. White
Identifying the right automation investments — those with low costs and high impacts — can result in millions of dollars in energy savings for petrochemical plants. <br>
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