ADVERTISEMENT
Back Issue
Welcome to Chemical Engineering Progress
In what appears to be a major victory for the pharmaceutical industry, the FDA has withdrawn its guidelines for enforcing 21 CFR, Part 11, the law governing the use of electronic records and signatures. Read our news analysis on what it means and what to expect (pp. 12-13). Also in this issue, get pointers on how to scaleup mixing processes involving non-Newtonian fluids (pp.44-52). And, read about how to optimize power consumption for aerobic fermenters (pp. 32-35).
May 2003 Vol. 99, No. 5
In This Issue
Reactions and Separations
Optimize Power Consumption in Aerobic Fermenters
By performing the necessary pilot work, and rigorously calculating the full-scale performance instead of using simple rules-of-thumb, significant energy savings can be achieved in fermenters. Gregory T. Benz -
Environmental Management
Profit from Effective Greenhouse Gas Management -- A Six-Step Plan
Follow this procedure for evaluating the strategic importance of greenhouse gas (GHG) issues to your firm and developing a corporate strategy for managing GHGs. Stanley R. Hayes - Joseph W. Hower - Michael P. Scott -
Fluids/Solids Handling
How to Scale-Up Mixing Processes in Non-Newtonian Fluids
This article will describe the relationships that must be understood to scale-up fluid mixing processes in non-Newtonian, power-law fluids. The principles described apply to both close-clearance impellers, such as anchors and helixes, and to open turbine impellers. A design procedure, based upon successful operating experience at the laboratory or pilot scale, is detailed and a practical example is highlighted. Robert J. Wilkens - Christopher Henry - Lew E. Gates -
Heat Transfer
Evaluating Chiller Performance
Use these simple temperature and flow measurement techniques to evaluate chilled-utility performance and identify the most cost-effective upgrades. Charles Churchman - Rebecca Krueger -
Career Catalyst
Improve Your Telephone Skills
Make the most of this important tool by practicing some common sense and good etiquette. Robert W. Bly -