2008

Saluting AIChE’s Centenarians

November
2008
Centennial
In honor of AIChE’s 100th birthday, we recognize two members who have each celebrated more than 100 birthdays.

Polysilicon Business Shines Brightly

August
2008
News Feature
Gerald Parkinson
To meet growing demand for solar energy, new polysilicon plants are being built at an unprecedented rate, and several new technologies will play a role in the capacity expansion.

Exploring Instrumentation Alternatives

September
2008
Instrumentation
Robert Baker
Salvaged, remanufactured, refurbished or new-surplus equipment may be a cost-effective option. Here's how to recognize when such devices may no longer meet safety or regulatory requirements.

Plant Security Remains a Moving Target

May
2008
News Feature
Cynthia F. Mascone
While chemical companies work toward complying with existing standards, legislators are poised to revise those very rules — with changes ranging from minor tweaking to major overhaul on the table.

What’s New Then and Now - Part 1

November
2008
Centennial
Matthew McKeon-Slattery
This special products section looks at some of today’s equipment and service offerings alongside product write-ups and ads from the past.

Legionella: An Invisible Risk

April
2008
News Feature
Cynthia F. Mascone
Ignoring this hidden hazard can put both the public and companies that operate cooling towers at risk.

RFID - Rx for Drug Security?

February
2008
News Feature
Gerald Parkinson
Some pharmaceutical companies are turning to radio frequency identification to protect against counterfeiting and theft of expensive drugs.

Grand Challenges for Engineering

April
2008
News Feature
Gordon Ellis
Twentieth-century engineering enabled life as we know it. The National Academy of Engineering looks at what is needed in the future.

IGCC Power Generation - Down But Not Out

September
2008
News Feature
Suzanne Shelley
Many technology advances are underway to address cost, CO2 and reliability issues and expand the use of integrated gasification combined cycle (IGCC), a cleaner way to generate electricity from coal.

Nanosensors: Evolution, Not Revolution...Yet

June
2008
News Feature
Suzanne A. Shelley
Promising nanotechnology-enabled sensors, monitoring devices and analytical instruments continue to advance toward commercialization for diverse industrial, environmental, medical and military applications— but hurdles remain.

Consider Natural Hazards in Process Safety Management

July
2008
Safety
Frank F. Liserio Jr.
Incorporating hurricanes, earthquakes and other forces of nature into an integrated process safety management (PSM) program can enable you to effectively identify these hazards and manage the risks.

Tracking Trends in Undergraduate Enrollment

November
2008
Centennial
R. Russell Rhinehart
By understanding the normal enrollment swings, employers and students can capitalize during the boom times and rideout the busts, while universities can allocate resources more effectively.

A Century of Triumphs

November
2008
Centennial
Ten lasting chemical engineering achievements — and 100 markers of chemical engineers’ progress toward them.

Science on a World Stage

July
2008
News Feature
Gordon Ellis
The first annual World Science Festival takes Manhattan by storm, with 120,000 people celebrating scientific diversity.

Use Exponential Functions to Correlate Temperature Dependence

July
2008
Physical Properties
Faruk Civan
Use Exponential Functions to Correlate Temperature Dependence Asymptotic exponential equations may provide a more-accurate or easier-to-use representation of a property’s temperature dependence than commonly used polynomial expressions.

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.

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.

Harnessing Natural Energy

March
2008
Special Section
Travis W. Walker
Before solar and wind energy can be widely exploited, a method for storing the energy provided by these intermittent sources and releasing it as demand arises must be developed.

Selecting Agitator Seals for Bioprocessing Applications

January
2008
Fluids and Solids Handling
William Ho Liam Teng, Gregory T. Benz
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...
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