Editor/Co-Editor/Associate Editor

Founding Editor-in-Chief: Biotechnology for Biofuels, BioMed Central, 2007 to present

Associate Editor: Bioresource Technology, Elsevier Press, 2010 to present

Editor of Handbook of Bioethanol, 1996

Editor/Co-Editor, Proceedings of 10^th, 11^th, 12^th, 13^th, 14^th, 15^th, 16^th, 17^th, and 18^th Symposia on Biotechnology for Fuels and Chemicals, May 1988 to May 1997.

Associate Editor, Journal of Solar Energy Engineering, American Society of Mechanical Engineers, 1989 to 1995

Editorial/Advisory Board

Applied Biochemistry and Biotechnology, Humana Press, 2007 to present 

Biofuels, Bioproducts and Biorefining, Wiley Interscience, 2007 to present

BioResources, North Carolina State University, 2005 to present

Biotechnology and Bioengineering, Wiley Interscience, 2003 to present

International Editorial Board, Biomass and Bioenergy, Pergamon Press, 1991 to present

Kentucky Science and Engineering Foundation, August 2001 to present

Process Biochemistry, Elsevier Science Publishers, 1993 to 2003

Advisory Board, Opportunities for Innovation in Biotechnology, R. Busche, Editor, National Institute of Standards and Technology, Gaithersburg, Maryland, September, 1993

Advisory Board, Department of Biology, University of Colorado at Denver, Denver, Colorado, 1987 to 1989

Board of Directors/ Advisers

Board of Directors, Biomass Energy Research Association, 1995 to present

Industrial Board of Advisers, Speed Scientific School, University of Louisville, Louisville, Kentucky, 1994 to present

Board of Directors, Colorado Institute for Research in Biotechnol­ogy, Colorado Advanced Technology Institute, Denver, Colorado, 1987 to 1997

Others

Organizing Committee, 8^th through 33^rd Symposia on Biotechnology for Fuels and Chemicals, 1986-2010

Research and New Technology Committee, American Institute of Chemical Engineers, 1993 to 1997 

Affiliate Professor, Department of Agricultural and Chemical Engineering, Colorado State University, Fort Collins, Colorado, 1986 to 1997 

Chair, 13^th, 15^th, and 17^th Symposia on Biotechnology for Fuels and Chemicals, May 1991, May 1993, and May 1995, respectively

Co-Chair, 11^th, 12^th, 14^th, 16^th, and 18^th Symposia on Biotechnology for Fuels and Chemicals, May 1989, May 1990, May 1992, May 1994, and May 1996, respectively.

Thesis Committee Member, Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, 1992 to 1994.

Chairman, Research Committee on Processes and Products, American Institute of Chemical Engineers, 1990 to 1993.

Special Member, Graduate Faculty, Department of Chemical Engineer­ing, University of Colorado, Boulder, Colorado, 1986 to 1987.

Adjunct Professor, Chemical Engineering and Petroleum Refining Department, Colorado School of Mines, Golden, Colorado, 1986.

Thesis Committee Member, Department of Chemical Engineering, University of Massachu­setts, Amherst, Massachusetts, 1973 to 1974.