Fellow of the American Asociation for the Advancement of Science, 2001

Award for "Outstanding Professional Accomplishments in the Field of Academics", AIChE, Pittsburgh Section (1999)

31st Annual W.N. Lacey Lectureship in Chemical Engineering, California Institute of Technology, 1998

Barnett Dodge Lectureship, Yale University, 1997

Robert Mehrabian Professorship, Carnegie Mellon University, 1997

Visiting Professor (Research Scholar Award), U. Melbourne, 1995

Visiting Professor (NWO Fellow), Landbouwuniversiteit Wageningen, 1994

University Professor, Carnegie Mellon University, 1994

Fellow of The American Institute of Medical and Biological Engineering

Co-Chair of Gordon Conference on "Membranes: Materials and Processes," 1993Vice-Chair of Gordon Conference on "Synthetic Membranes," 1991

Alumni Wall of Fame, University of Delaware, 1993

National Academy of Engineering, 1992

Co-author of "Best Technical Paper" at Annual AIChE Meeting, Miami Beach, 1992

Gulf Professor of Chemical Engineering, 1991-97

Holtz Lecture, Johns Hopkins University, 1990

Professional Progress Award, American Institute of Chemical Engineers, 1989

Fifth Berkeley Lectures, U. California, March 1989

National Science Foundation Commemorative Lectureship, 1989

Fellow of the John Simon Guggenheim Memorial Foundation, 1982-83

Visiting Professor, Chemical Engineering Department, Massachusetts Institute of Technology, 1982-83

Visiting Scholar, Irish American Technology Exchange Programme, Dept. Chemical Engineering, University College Dublin (1983)