*Curtis W. McGraw Research Award (1976)
*Allan P. Colburn Award of the American Institute of Chemical Engineers (1976)
*NASA Public Service Medal (1980)
*National Academy of Engineering, Elected Member (1982)
*William H. Walker Award of the American Institute of Chemical Engineers (1986)
*Japan Society for the Promotion of Science, Elected Fellow (1986)
*George Westinghouse Award of the American Society for Engineering Education (1987)
*Distinguished Alumnus Award, University of Rochester (1989)
*American Academy of Arts and Sciences, Elected Member (1991)
*American Chemical Society Award for Creative Advances in Environmental Science and Technology (1993)
*Fuchs Memorial Award (1998)
*American Association for the Advancement of Science, Elected Fellow (1999)
*Warren K. Lewis Award of the American Institute of Chemical Engineers (2000)
*Nevada Medal (2001)
*Honorary Doctorate, Carnegie Mellon University (2002)
*Haagen-Smit Clean Air Award of the California Air Resources Board (2003)
*Aurel Stodola Medal (2008)
*Honorary Doctorate, Clarkson University (2009)
*Tyler Prize for Environmental Achievement (2012)
*National Academy of Sciences, Elected Member (2013)