1975-
Present

Professor

Chemical Engineering – Purdue
Food & Agricultural Engr. – Purdue

1977-1999

Director

LORRE – Purdue

1996

Visiting Professor

National Chung Cheng University, Taiwan, China

1995

Visiting Professor

Hong Kong University of Science & Technology, Hong Kong

1975-1980

Associate Director

Food Science Institute – Purdue

1974-1975

Visiting Professor, Chemical Engr.

Chemical Engineering – Purdue

1971

Visiting Scientist, Chemical Engr.

Cambridge University

1973-1974

Program Manager

Enzyme Technology and Extractive Metallurgy Programs, NSF

1970-1974
1966-1970
1965-1966

Professor, Chemical Engineering
Associate Professor
Assistant Professor

Iowa State University

1962-1965

Section Leader

Union Starch

1961-1962

Research Chemist

Division of Chemical Development, Tennessee Valley Authority

Honors

Founding Fellow, American Institute of Medical and Biological Engineering, 1992.

John Ericsson Award for "Outstanding Achievement" in Renewable Energy, presented by Department of Energy, Washington, DC, November, 1988.

Marvin Johnson Research Award, American Chemical Society, 1987.

David Perlman Lectureship, American Chemical Society, 1986.

Shreve Best Teacher Award, Purdue University, 1984

Member of the following Societies: American Institute of Chemical Engineering (AIChE), American Chemical Society (ACS), American Society of Microbiology (ASM)