AIChE

Graphene Marches Down a Long Road to Commercialization

April
2013
News Feature
Michelle Bryner
With so much graphene research underway, it can be hard to keep track of the progress, as well as to evaluate the commercial viability of such developments. Here’s a look at what scientists and engineers are doing and saying about graphene.

Assess Hazards with Process Flow Failure Modes Analysis

March
2013
Safety
Rosalynn MacGregor
Process flow failure modes (PFFM) analysis is an intuitive, process-flow-directed way to identify potentially hazardous scenarios. Learn how to apply this technique to your process hazard reviews.

CEP: Patent Update - An Invention's Nonobviousness May Not Be Obvious

April
2013
Patent Update
M. Henry Heines
To qualify for a patent, an invention must be both novel and nonobvious. Novelty requires that the invention differ in some way from the prior art, such as earlier patents and published materials. Nonobviousness requires that there be more than just...

Understand the Basics of Membrane Filtration

April
2013
Back To Basics
Hua Wang, Hongyi Zhou
Membrane filtration is an integral part of many industrial processes, as it is often more environmentally sustainable and cost-effective than other separation technologies

CEP: Update

May
2006
News Update
Bioprocessing Systems Go disposable: Single-use disposable technology is gaining acceptance in the bio-pharmaceutical arena, especially with processors seeking to reduce their operating costs and add flexibility to their manufacturing schemes...

SBE Update: Drug Delivery and Chemical/Biological Engineering

March
2013
SBE Special Section
June Wispelwey
Although you might not associate drug delivery with chemical engineering, the principles of chemical engineering — such as mass and energy balances, transport phenomena, reaction kinetics, and particle technology — are intimately involved in drug...

CEP: YPOV Your Career as a Volunteer

March
2013
YPOV
Arjun Gopalratnam
To surpass the merely adequate, and to accomplish something noteworthy, requires one to take on tasks that are unstated and to solve problems that others may not have even noticed. Depending on the structure of your work environment, there may be...

CEP: Editorial - More Than a Spoonful of Sugar

March
2013
Editorial
Cynthia Mascone
Many of us remember receiving our polio vaccine on a sugar cube. Indeed, that was the motivation behind A Spoonful of Sugar, a song from the classic Disney movie Mary Poppins. Walt Disney had instructed the Sherman brothers, Robert and Richard, to come up with a catchy song for the film. When Robert arrived at home, after working all day trying to come up with an idea, his wife told him that the children had gotten their polio vaccine that day. Thinking they had gotten a shot, he asked them if it hurt. His son answered that the medicine was put on a cube of sugar and he swallowed it. And so “a spoonful of sugar helps the medicine go down was born.

CEP: Update

March
2013
News Update
Color-Shifting Fibers Take their Lead from Nature; Nanocapsules Target Cancer Cells without Harming Healthy Ones ; Graphene Straightens Out with Some Help from Copper; Silicon Made Easy for Batteries; and more.

CEP: Whats New

March
2013
What's New
Read about new products and services in the areas of instrumentation; fluids and solids handling; laboratory equipment; and environmental, health, and safety.

Genetically Modified Crops

September
2005
Critical Issues
John Shave
Viewpoint #1 Regulate the Product, Not the Process by Gregory Conko Viewpoint #2 Not All Sugar & Spice

Product Digest - Safety Equipment

May
2012
Product Digest
Check out warning devices for hazardous areas and high-visibility work vests that reduce static electricity.

Prevent Pulsation Problems in Piping Systems

March
2006
Fluids and Solids Handling
Mark Corbo
Eliminate unnecessary damage in piping systems by following these guidelines to avoid pulsations from pumps and compressors.

Realistically Predict Capacity and Pressure Drop for Packed Columns

July
2007
Reactions and Separations
Emil Abkar, Khashayar Afshar, Jeffrey Scherffius, Henry Z. Kister
Generalized pressure-drop correlation (GPDC) charts have been the standard for predicting packing flood points and pressure drops. This article guides engineers on the correct and incorrect uses of the GPDC interpolation procedure, and updates the...

The Hydrogen Economy Is Coming - The Question is Where?

December
2005
On The Horizon
Charles W. Forsberg
The end of the oil age is coming. While the replacements for oil are uncertain, the leading candidates have one thing in common — the need for massive quantities of hydrogen in the production process.

Apply an Integrated Approach to Catalytic Process Design

February
2007
Reactions and Separations
Richard V. Porcelli, Mitrajit Mukherjee, James Nehlsen
To ensure a practical, efficient and economically viable process, first consider how a successful catalytic reaction system would work, then focus on making a catalyst with the desired characteristics.

CEP: Editorial - Plunging into a Time Warp

January
2013
Editorial
Cynthia Mascone
When reporting on events, writers and editors always need to be mindful of when the reader will receive the publication. This is especially critical for a monthly magazine like CEP. An event that is considered breaking news when we experience it or...

CEP: Process Safety Beacon - What is Supporting Your Equipment?

February
2013
Process Safety Beacon
Pipes and equipment that are not properly supported will be subject to stress, vibration, or other problems, This can cause leaks, or even a complete collapse of piping or equipment. But, problems with inadequate support of piping and other...

Applying the Paradigm Case Method for Flowmeter Selection

September
2006
Fluids and Solids Handling
Jesse Yoder
This effective approach to flowmeter selection involves a step-by-step method that begins by matching the application with the flowmeter(s). Then, a series of criteria are applied to narrow the selection.

Designing Pneumatic Conveying Systems

May
2006
Fluids and Solids Handling
Eric Maynard
Use this 9-step methodology to design and operate a reliable and cost-effective system to efficiently transport materials.

Denmark’s Chemicals Industry: Progress and Challenges

February
2013
Global Outlook
Rafiqul Gani, Gurkan Sin, Kim Dam-Johansen
Denmark’s chemicals industry is characterized by a variety of innovative companies, especially in the life sciences. To remain competitive, these companies must continue to invest in innovation, and the country’s universities must fill a growing need for highly educated engineering professionals.

Improve Safety by Improving Human Performance

August
2006
Safety
Donald K. Lorenzo
Follow these guidelines to identify situations in which human errors are likely to occur and to correct potential problems early enough to avoid adverse consequences.

Fuel Cells, the Hydrogen Economy and You

November
2007
On The Horizon
Herbert W. Cooper
Chemical engineers will play an important role in the development and deployment of fuel cells. This primer summarizes some of the key technical and economic issues that must be overcome.

CEP: News Update

February
2013
News Update
Now Available: High-Performance Carbon Nanotube Fibers; Nanowire-Based Solar Cell Achieves Record Performance; Fireflies Share Their Light Tricks with LEDs; Tissue Adhesives Are Inspired by the Prickly Porcupine; New Coating Shields Against Nearly All Liquids; and more.

Understanding Crystallization and Crystallizers

October
2006
Fluids and Solids Handling
Lionel O'Young, Ketan D. Samant
Gain qualitative insight into the basic mechanisms of crystallization, the principles of crystallizer operation, and the ways in which these concepts relate to the selection and application of the various crystallizer configurations in industrial...

A Hybrid Route to Chirally Pure Products

November
2005
Reactions and Separations
Lionel O'Young , Christianto Wibowo
Chromatographic resolution coupled with crystallization can be your best option for manufacturing chirally pure products.

CEP: Editorial - Moving Beyond the Black Swan Excuse

February
2013
Editorial
Cynthia Mascone
Days after Superstorm Sandy hit the northeastern U.S., I attended the session “Accounting for Beyond Design Basis Events” at the 2012 AIChE Annual Meeting in Pittsburgh, where CCPS Consultant John Murphy gave a talk entitled “Beware the Black Swan...

ChemShow Experts Look to the Future

November
2009
News Feature
Matthew McKeon-Slattery
Industry experts share their opinions on what they consider to be important recent breakthroughs and what they predict will be next for the CPI.

CEP: Profile - A Chemical Engineering Powerhouse

February
2013
Profile
I like to think of myself as an engineer with an ability to bring various disciplines together to tackle tough challenges,” says Narayan Ramesh, Associate R&D Director at Dow Solar, and recipient of AIChE’s inaugural Industrial Progress Award...

Selecting Elbows for Pneumatic Conveying Systems

September
2007
Fluids and Solids Handling
Paul Wagner
The right elbow can keep your system operating at peak performance, reduce maintenance costs, and minimize material attrition and elbow wear. This article describes common elbows and outlines factors to consider when selecting one.

Consider Recycled Water for Your Cooling Tower Makeup

February
2013
Heat Transfer
Paul Puckorius
Many types of “used” water may be appropriate as cooling tower makeup. Here’s how to determine which waters are suitable and cost-effective for the equipment in your cooling system.

Cost Management in Heat-Transfer-Fluid Systems

July
2006
Heat Transfer
Conrad E. Gamble, P.E.
By taking ownership of fluid-related decisions for the entire life of the project, from design through dismantling, users can secure the best and lowest-cost approach in process heating and cooling.

Beware of Errors in Numerical Problem-Solving

November
2009
Computational Methods
Michael Elly, Michael B. Cutlip, Mordechai Shacham
Understand how to detect and prevent common errors when using mathematical software tools.

Diagnosing Maldistribution in Towers

May
2007
Reactions and Separations
Simon X. Xu
Gamma CAT-scan technology makes possible the collection of much more vital online process information than conventional diagnostic techniques.

Assess the Performance of Positive-Displacement Pumps

December
2007
Fluids and Solids Handling
AIChE's Equipment Testing Procedures Committee
Here's how to evaluate rotary pumps— gear, lobe, vane and multiple-screw designs— regardless of whether the material being handled is a Newtonian or non-Newtonian fluid.

Addressing Energy Supply Vulnerabilities

April
2006
Critical Issues
Herbert W. Cooper
Can a mega-worldwide energy interruption occur? The perfect storm may be brewing with such events as natural disasters, acts of terrorism and international disputes. This article explains how your company can prepare to effectively handle an energy...

CEP: Process Safety Beacon - Mechanical Integrity of Tubing

May
2012
Process Safety Beacon
Proper installation, maintenance, and inspection of metal tubing is important in preventing fires and toxic material releases in process plants. Do not forget about tubing just because it is usually small. Even a small leak can cause a fire that can...

Piloting Bioreactors for Agitation Scale-Up

February
2008
Reactions and Separations
Gregory T. Benz
This article offers guidance on how to design appropriate experiments to measure scalable data for agitation in both aerobic and anaerobic bioreactors.

Troubleshooting Distillation Simulation

June
2006
Reactions and Separations
Stanislaw K. Wasylkiewicz
A tool called azeotrope pressure sensitivity analysis (APSA) can shed light on the dependence of an azeotrope's composition and temperature on changes in pressure.

CEP: What's New

February
2013
What's New
Read about new products and services in the areas of instrumentation; fluids and solids handling; operations and maintenance; and environmental, health, and safety.

2009 AIChE Salary Survey

August
2009
Career Catalyst
Chemical engineering salaries are up 7% from two years ago, to a median of $110,950. Furthermore, average starting salaries have risen to over $65,000.

Avoid Problems with Units of Measurement

February
2013
Back To Basics
Faruk Civan
Engineers need to clearly understand units, and be able to convert, express, document, and communicate them in correspondence, operating instructions, and publications.

2011 AIChE Salary Survey

June
2011
Career Catalyst
Chemical engineering salaries have remained stable over the last two years at a median of $110,000. Average starting salaries are nearly $66,900. This expanded version of the article that appeared in print provides the detailed survey results.

Designing Suspension-Mixing Systems

January
2006
Fluids and Solids Handling
Frantisek Rieger, Pavel Ditl
Impeller and vessel geometries are key factors in selecting mixing equipment to efficiently suspend particulate solids in slurries

Computational Fluid Dynamics - Power to the People

April
2007
Computational Methods
Suzanne Shelley
Today's CFD Programs are more powerful and easier to use than ever, thanks to improved mesh-generation strategies, computational methodologies, user interfaces and enhanced graphics capabilities. Cover photo courtesy of Acusim and Intelligent Light.

Minimize Wastes from Specialty Chemical Processes

January
2008
Environmental Management
Michael Cipullo, Jeffrey Mueller
Use this holistic approach as the basis for a process development strategy to identify environmentally sound, cost-effective, low-waste-generating processes.

Easy Ways to Improve Energy Efficiency

December
2012
Operations & Maintenance
Alan Rossiter, Veerasamy Venkatesan
Managing the energy consumption of a process does not need to be complicated. This article presents some examples of less-complicated strategies.

Successfully Scale Up Solids Handling

April
2008
Fluids and Solids Handling
K. Eric Bengtson, Thomas G. Troxel, John W. Carson
A sound theoretical model of the process to be scaled is the best approach; if one is not available, bench-scale testing, physical scale modeling or full-scale modeling is required. Here are guidelines as to which method is appropriate for various...

Beware of the Dangers of Cold Traps

February
2013
Safety
James R. Risko
Cold traps — steam traps that no longer drain condensate — are often ignored in lieu of less-critical leaking traps, until a catastrophic event, such as a plant shutdown or personal injury, occurs. Use historical data to accurately estimate the annual cost of these cold traps to justify their swift repair.

Optimal Automated Process Fault Analysis

January, 2013
With this book as their guide, readers have a powerful new tool for ensuring the safety and reliability of any chemical processing system. It details a tested and proven strategy to develop optimal automated process fault analyzers.

Optimizing an Organic Rankine Cycle

January
2013
Heat Transfer
Alan Winstead, Ali Bourji, P.E.
An organic Rankine cycle (ORC) system can be a cost-effective way to convert waste heat to electricity. The key is finding the best ratio of net power recovery to capital cost.

CEP: Career Corner - Managing Your Career Transition

February
2013
Career Corner
Loraine Kasprzak
Sooner or later during our professional careers, most of us will change jobs, get promoted, move into a different line of work, or even get laid off. My experience is a good example. I moved from an entry-level R&D engineer to a commercial...

Implement an Effective Loop Tuning Strategy

January
2013
Back To Basics
Timothy Olsen, Norman Ito
Use these loop tuning guidelines to improve process control and enhance product uniformity Many undergraduate chemical engineering programs teach the Ziegler-Nichols tuning methods, developed by John G. Ziegler and Nathaniel B. Nichols in the 1940s...
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