January

Use Model-Predictive Control to Improve Distillation Operations

January
2008
Instrumentation
Robert J. Conroy, Umesh Mathur, Robert D. Rounding, Daniel R. Webb
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.

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>

Educational Perspective on the Future of Chemical Engineering

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

Access Environmental Information on the Internet

January
2003
Environmental Management
June C. Bolstridge
These websites provide useful data, models, publications and other resources to aid environmental decision-making and regulatory compliance activities.

Tune Control Loops for Minimum Variability

January
2002
Instrumentation
Lanny A. Robbins
The Robbins tuning rules can reduce the variability of control loop response to about 60% of that observed with Ziegler-Nichols tuning rules.

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...

What's Your Decision Style?

January
2004
Career Catalyst
James D. Weith
Understanding how you and those around you make decisions is a first step in improving interpersonal relationships and team efficiencies.

The Reference Process Demystified

January
2010
Career Catalyst
Lisa L. Walker
The people you identify as references in your job search act as your ambassadors to a potential employer. Choosing references who can paint a clear picture of your strengths and potential can be a decisive advantage in your employment campaign.

Incorporating Sustainability into Chemical Engineering Education

January
2009
Special Section
David T. Allen, Braden R. Allenby, Cliff I. Davidson, Cynthia F. Murphy
This benchmarking study of the types of courses offered and the material being taught sheds light on what the engineering profession regards as sustainability.

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.

Close Out - The Forgotten Phase

January
2002
Management
Paula K. Martin ,  Karen Tate
In the long run, taking the time to close out a project properly will save time and reduce the chances of making the same mistake twice.

Audit Your Emissions Inventory

January
2010
Environmental Management
Jeffrey H. Siegell
Some emissions reports include data that are based on faulty assumptions and methodologies. This article presents an effective approach to auditing your emissions inventory to maximize the representativeness of the reports you submit. <br>

A Simple Approach to Vapor Pressure Prediction

January
2007
Reactions and Separations
Andrew J. DeDoes, Matthew D. Goetz, Michael J. Misovich
This method reproduces the vapor pressure predictions of the Soave-Redlich-Kwong and Peng-Robinson equation of state with a simple Antoine equation that uses constants derived from critical properties and the acentric factor.

Give Memorable Presentations

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

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.

Building Models from Simulator Runs

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