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).

Patents

• 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.)