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Professional Societies

1988 - present Member of Water Environment Federation (WEF)

1997 - present Member of International Water Association (IWA)

1997 - present Member of American Water Works Association (AWWA)

1995 - present Member of National Society of Professional Engineers (NSPE)

1996 - present Member of Association of Environmental Engineering and Science Professors (AEESP)

1988 - present Member of Iowa Engineering Society

Awards and Honors

1999 R&D 100 Award for Temperature-Phased Anaerobic Digestion (TPAD) System .

VEISHEA 2001 Faculty of the Year Award (elected by student body), College of Engineering, Iowa State University.

Charles W. Schafer Award for Excellence in Teaching, Research and Service, Department of Civil and Construction Engineering, Iowa State University (2001).


Temperature-Phased Anaerobic Digestion (TPAD) [US Patent # 5,746,919] : May 1998 (Developed by research under joint supervision of Dr. R. R. Dague and myself.)

Anaerobic Sequencing Batch Reactor (ASBR) [US Patent # 5,185,079] : Feb. 1993 (Based on Ph.D. research.)