AIChE

Understand the Fundamentals of Centrifugal Pumps

October
2010
Back To Basics
J. Howard Kelly, P.E.
Efficient and reliable pumps can significantly improve a plant’s bottom line. This article reviews important concepts that a chemical engineer must understand and the factors that need to be considered when selecting radial-flow centrifugal pumps.

Learn to Effectively Operate and Maintain Pumps

December
2011
Back To Basics
Daniel Kernan
Centrifugal pumps play a central role in chemical processing. Proper pump operation and maintenance can improve a facility's productivity, reduce downtime, and trim costs.

An Engineer’s Guide to Management of Change

March
2012
Back To Basics
R. Wayne Garland
Using a formal change procedure promotes safe operations and prevents injuries and deaths, and it will also favorably impact the bottom line.

Biobutanol – A Replacement for Bioethanol?

August
2008
SBE Special Section
Ron Cascone
Ethanol, the leading incumbant biofuel, has several limitations.Butanol overcomes many of these, and holds promise as the next important transportation biofuel.

Hydrogen: Liability or Asset?

September
2002
Reactions and Separations
Dennis Vauk, Ian Moore, Nick  Hallale
In a petroleum refinery, viewing hydrogen as an asset rather than a liability can lead to increased profits. The key is in the mindset. A typical investor uses money to make money. This article shows you how to use hydrogen to make money.

Screw Feeders: A Guide to Selection and Use

February
2003
Fluids and Solids Handling
Hermann J. Feise, Steven W. Couch, Thomas L. Krieger, Timothy Bell
Gain insight as to what screw feeder is best for your application. Plus, learn how to size, specify and test screw feeders.

Production Modeling for Multimodal Operations

February
2004
Information Technology
Jeffrey D. Kelly
Two new views for production modeling are introduced - production flow networks and production flow maps - that focus on unit operations and feedstocks, respectively.

Designing Experiments for the Modern Micro Industries

February
2006
Computational Methods
Phillip H. Williams
Although the sparsity of effects principle is still good advice, we need to be careful of emphasizing it too much -- to the point that it becomes an assumed practice, rather than a useful rule of thumb.

Retrofit Water Systems the SHARPS Way

November
2006
Environmental Management
Sharifah Rafidah Wan Alwi, Zainuddin A. Manan, Norrazi Misran, Mohd Hisham Samingin
Use the Systematic Hierarchical Approach for Resilient Process Screening (SHARPS) technique to quickly and systematically isolate cost-effective and affordable water management options prior to design.

Predesign for Pollution Prevention and Control

June
2007
Environmental Management
Gael D. Ulrich, Palligarnai T. Vasudevan
A plant's intrinsic cleanliness is determined during the predesign stage. This article provides guidance for making critical decisions during preliminary design.

Solving Phase Equilibrium Problems

September
2008
Reactions and Separations
Terrence L. Chambers, James R. Reinhardt
Use this optimization-based approach to analyze multi-component, multi-phase Equilibria.

Making the Team: Teams, Teamwork, and Teambuilding

June
2010
Career Catalyst
Eldon R. Larsen
A project team is more than a group of talented professionals. It is an interdependent unit, empowered with understanding, accountabilities and mutual support that permit it to achieve goals — both organizational and personal — more efficiently and...

Computational Science: Enabling Technology Development

January
2011
On The Horizon
Anthony Cugini, Wei Ge, Chris Guenther, Jinghai Li, Madhava Syamlal, Wei Wang, Ning Yang
Computational science will play a key role in accelerating technology development and in the realization of virtual process engineering.

Update

March
2012
News Update
Updates in this issue include: State of the Union Address Identifies Importance of Manufacturing and Energy to U.S. Economy Scorpions Inspire Tough Surface Nanorods Line Up for Assembly Nanosphere Structure Boosts Light Absorption Zeolite Catalyst...

Account for Uncertainty in New Product Development

June
2001
Management
Gavin  Sinclair ,  Gary Blau
New product development projects can be risky business. Learn how to incorporate uncertainty and risk analysis into the new product development process.

Pervaporation Comes of Age

October
2001
Reactions and Separations
Nick Wynn
This membrane process has found growing use for dehydrating organics. Uses keep increasing, mostly due to development of new, high-temperature membranes.

Step into the Virtual Plant

February
2002
Instrumentation
Gregory K McMillan, Mark S Sowell III, Michael M Mansy
The ability to warehouse process and control system knowledge offers a vast potential for improved operations by sharing a common source of information and avoiding data duplication.

Limiting Shift-Work Fatigue in Process Control

April
2003
Management
Brad A. Walker, Karen D. Smith, Milena D. Kekich
Disrupting normal sleep/wake cycles causes fatigue and reduces alertness. Here are some preventive measures that can improve the performance of employees in 24-h operations.

Nano-technology: Fueling the Chemical Industry's Future

November
2003
Special Section
Daniela L. Carrillo, Tim Harper, Paul Holister, Mindy Rittner, Mihail C. Roco, Cristina Roman Vas
Nanotechnology, as a whole, is still an emerging area with the need to make progress in both scientific and technological terms before enormous commercialization of products may occur. Nevertheless, commercial products are out there — more in some...

Implementing an EHS Management Information System

May
2004
Information Technology
Jill Barson Gilbert
Information technology issues are just as important as business and environmental, health and safety considerations. Follow these ten tips to deply an effective EMIS with a positive return on investment.

Selecting a Membrane Filtration System

December
2004
Fluids and Solids Handling
Wu Chen, Frank Parma
Proper design and scaleup of a membrane filtration system requires an understanding of the availability of membrane material, pore size and module configurations. These practical guidelines will help in the selection process.

Improving the Reliability of Mechanical Seals

November
2005
Michael Huebner
With a better understanding of seals, their selection, material considerations, and operation requirements, users can greatly improve equipment reliability and reduce operating costs.

Succeed in the Workplace

January
2007
Career Catalyst
Stan Sebastian
This top 10 list covers things you may never have been told about the real world.

What Does It Mean To Be Green?

September
2009
Opinion
Phillip E. Savage, P.E.
Sustainability encompasses green chemistry and green engineering, among other concepts. This article explores some of the principles of sustainability and provides a framework for developing a lifecycle approach to chemical engineering.

Understand the Real World of Mixing

March
2010
Back To Basics
Thomas Post
Most chemical engineering curricula do not adequately address mixing as it is commonly practiced in the chemical process industries. This article attempts to fill in the gaps by explaining flow patterns, mixing techniques, and the turbulent,...

Understanding Process Safety Management

August
2010
Back To Basics
Adrian L. Sepeda
A structured risk-based approach defines the pathways to successful implementation of process safety management objectives

The Evolution of a Chemical Engineering Career

August
2002
Special Section
Corrine L. Kupstas
Follow this engineer's career path as she shares her thoughts on the transitions she has made and how family considerations factored into her career decisions.

Should You Use Enhanced Tubes?

April
2002
Heat Transfer
Graham T. Polley, Mohamad R. Jafari Nasr
Following this procedure to identify a basic exchanger geometry without performing a full exchanger design and to evaluate where and when heat transfer enhancement can be of benefit.

Estimate the Capacity of Simple Batch Processes

August
2002
Reactions and Separations
James L. Manganaro
Finding the throughput of a multiple-unit, multiple-step operation, even when it is relatively uncomplicated, is not always an easy matter. Several equations and graphical aids are provided to help determine yearly capacity.

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.

Understand Personality Styles

June
2003
Career Catalyst
Mary Kay Slowikowski
One key to being a successful leader is understanding yourself and others, and adapting your behavior as the situation warrants.

Hiring the Right Consultant

July
2004
Career Catalyst
Peter R. Lantos
Follow these suggestions for identifying and validating a consultant, as well as for making the most effective use of the consultant’s expertise.

Modeling Production-Chain Information

February
2005
Information Technology
Jeffrey D. Kelly
Data alone is not information. Use this model to transform data into vital information for decision making.

Is Your Cold Lime Softener Effective?

December
2007
Reactions and Separations
Loraine Huchler
If your plant's utility system is experiencing problems, the culprit may be the clarifier. Understanding how to diagnose and correct off-spec clarifier operation will allow downstream units to function more efficiently and reliably.

Closing the Gap Between Engineers and Management

May
2010
Career Catalyst
George Buckbee, P.E.
Work-style and communication differences often result in a disconnect between managers and engineers. Bridging this culture gap will allow managers to make better business decisions and bring engineers the understanding and recognition they deserve.

Scaling Up Research to Commercial Manufacturing

November
2010
SBE Special Section
Erika Lapinskas
The production of stem-cell-based therapeutic products in large quantities is more complex than manufacturing molecular drugs. Scale-up and scale-out challenges arise related to the type of stem cell, cell expansion and banking, sterile handling,...

Reduce Piloting Time and Cost

July
2011
Process Development
David A. Berg, Michael T. Cleary
Pilot-scale experimentation is essential to establish a sound foundation for a new chemical processing unit. These best practices can reduce the time and cost involved in process development.

Inherently Safer Design: The Fundamentals

January
2012
Special Section
Dennis C. Hendershot
Build safety into your process by substituting less-hazardous materials and chemistry, minimizing inventories and equipment sizes, moderating operating conditions, and simplifying unnecessarily complex operations.

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.

Play Your Cards Right ...

May
2002
Career Catalyst
Nathaniel A. Matlin
to make yourself stand out from the pack when you're seeking a new position.

Put More Punch Into Catalytic Reactors

March
2003
Reactions and Separations
Ed Fontes, Olof Hernell, Phil Byrne
Using equation-based modeling to design these reactors can optimize their efficiency and throughput.

Great Companies for Women Engineers

September
2003
Career Catalyst
Cynthia F. Mascone
The keys to building a talented workforce: benefits that enable employees to balance their work and personal lives; stimulating and challenging assignments; and a culture that allows all employees to reach their full potential.

Getting Your P.E. License

March
2004
Career Catalyst
Reginaldo A. Montague
This article explains the process of obtaining a P.E. license, offers suggestions for preparing and taking the exam, and discusses requirements for maintaining the license.

Improve and Maintain Cooling Tower Efficiency

April
2005
Heat Transfer
James L. Willa
Changing maintenance and/or operating procedures can significantly increase cooling tower performance without major capital expenditures. Here are some tips for ensuring proper design and operation of major tower components.

Selecting Corrosion-Resistant Materials

December
2006
Materials
Francesco Picciotti, Marcello Picciotti
This article looks at some common corrosion-resistant alloys and gasket materials that are available for use in applications with high pressures and temperatures.

Nuclear Power: Fueling the Hydrogen Economy

July
2010
Special Section
William A. Summers
Nuclear hydrogen might first enter the transportation market to supplement existing fossil resources. In the long-term, it could be a key in the development of a hydrogen economy.

Determine the Right Eye Protection

September
2011
Safety
Harry J. Elston
Wearing the appropriate protective eyewear begins with a thorough safety assessment. These guidelines clarify how to identify hazards and select protective equipment to avoid eye injuries.

Selecting Nickel Alloys for Corrosive Applications

May
2007
Materials
Paul Crook
Nickel and its alloys offer resistance to attack by a wide range of chemicals, including acids, alkalis and salts, making these materials suitable for may CPI applications.

Be a Better Bargainer

July
2002
Career Catalyst
Robert W. Bly 
Follow these pointers to succeed in win-win negotiations.

Shortcut Distillation Calculations via Spreadsheets

December
2002
Reactions and Separations
Jake Jevric, Muhammad E. Fayed
This method uses a numerical solution to the McCabe-Thiele diagram to find the theoretical number of stages for binary and pseudo-binary systems,then calculates the actual number of stages, reflux ratio and column dimensions.

Improve Your Telephone Skills

May
2003
Career Catalyst
Make the most of this important tool by practicing some common sense and good etiquette. RobertW.Bly-

Evaluating Dryers for New Services

December
2003
Heat Transfer
Charles G. Moyers
Continuous dryers are accurately and easily evaluated using laboratory-scale simulators combined with the specific drying rate approach.

Improve Plant Reliability by Redefining Roles

June
2004
Management
Kevin Smith
The operator and maintenance technician can play key roles in ensuring equipment reliability and thus maximizing production while maintaining quality.

Increase Powder Flow via Gas Injection

July
2006
Fluids and Solids Handling
John W. Carson, Herman Purutyan, Thomas G. Troxel
Fluidization and air-assisted discharge are two ways to optimize fine-solids handling. However, the choice of technology is as important as designing and operating the system properly.

Understand Discrete Nanoscale Transport

June
2008
On The Horizon
Anh-Tuan Dinh, Samir Mitragotri, Chinmay Pangarkar
Unlike mass, energy and momentum transfer, which are described by continuum equations, the movements and interactions of the nanoscale entitites within a cell constitute the transport phenomenon known as discrete nanoscale transport (DNT).

Preventing Maldistribution in Multi-Pass Trays

April
2010
Reactions and Separations
Richard Dionne, Henry Z. Kister, Matthew R. Olsson, Walter J. Stupin
This method, based on hydraulic equations in the open literature, calculates vapor/liquid distribution in four-pass trays to correctly predict flooding and efficiency.
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