Robert M. Counce, John M. Holmes
Chemical Engineering Department, The University of Tennessee
Knoxville, Tennessee 37996, USA
E-mail: counce@utk.edu

Ronald A. Reimer
Sabine River Laboratory, E. I. du Pont de Nemours and Company
Orange, Texas 77631, USA

Rita A. Heckrotte
Chattanooga Plant, E. I. du Pont de Nemours and Company
Chattanooga, Tennessee 37415, USA

Beth W. Alderson
Eastman Chemical Company
Kingsport, Tennessee 37662, USA

Abstract:
A key role of engineers in the transition to more sustainable activities is likely to remain that of seeking to achieve pollution prevention and energy efficiency in manufacturing/production activities. A fundamental concept that has proven useful in teaching pollution prevention is that of `intrinsic’ vs. `extrinsic’ wastes. The same concept may be amenable to promotion of energy efficiency.