लेखक: David R. Shonnard

DAVID T. ALLEN, Reese Professor of Chemical Engineering and the Director of the Center for Energy and Environmental Resources at the University of Texas at Austin, was the 2000 recipient of the American Institute of Chemical Engineers Lawrence K. Cecil Award in Environmental Chemical Engineering for his contributions to air quality and pollution prevention engineering and environmental engineering education. DAVID R. SHONNARD, Associate Professor of Chemical Engineering at Michigan Technological University, is a 1998 recipient of the NSF/Lucent Technologies Foundation Industrial Ecology Research Fellowship for research that integrates environmental impact assessment with process design. Other related awards include an NSF-funded repository for pollution prevention curriculum development materials. With contributions by authors from US EPA and Industry.