Chair, Adhoc Personnel Committee to review the nomination of a candidate for appointment as Associate Professor, Columbia University, Fu Foundation School of Applied Science, New York, NY April 4, 2012.
Chair, session at International Conference on Wireless Technologies for Humanitarian Relief (ACWR2011), Amrita University, Amritapuri, India, December 21, 2011.
Chair, Unilever Award Committee at the 85th ACS Colloid & Surface Science Symposium, Montreal, Canada, June 19-22, 2011.
Conference Honorary Chair, Benefication of Phosphate VI, Kunming, China, March 6-11, 2011.
Chairman, “Separation techniques to meet oil spill challenges” (sessions I, II & III) at the 2011 SME Annual Meeting and Exhibit, Denver, CO, February 27 – March 2, 2011.
Session Chair, Session 8-A – “Flotation VI” at the XXV International Mineral Processing Congress – IMPC 2010, Brisbane, Australia, September 7, 2010.
Session Chair, Water Quality Management and Regional Water Quality and Quantity Planning – I, at the 3rd International Perspective on Current & Future State of Water Resources & the Environment, Chennai, India, January 6, 2010.
Chairman, 13th International Conference on Colloid and Surface Science and 83rd ACS Colloid and Surface Science Symposium, New York, June 14-19, 2009
Chair, Hoover Award Ceremony at Columbia University, New York, to award Hoover medal to former Indian President Dr. A.P.J. Abdul Kalam.
Session Chair, at the 234th ACS National Meeting, Boston, MA, August 19 – 23, 2007.
Chair, Plenary Lectures at the 12th International Conference on Surface and Colloid Science, Beijing, China, October 18, 2006.
Chair, Surfactant Self-Assembly / Surfactants on Surfaces session of the 229th ACS National Meeting, San Diego, CA, March 17, 2005.
Chair, “Soft Colloids: Interacting Nanoparticles session,” 226th ACS National Meeting, New York, September 7, 2003.
Chair, Session of the 14th Surfactant in Solution Symposium, Barcelona, Spain, June 9 –14, 2002
Chair, Surfactant Self-Assembly / Surfactants on Surfaces session of the 229th ACS National Meeting, San Diego, CA, March 17, 2005.
Chair, Dhanan Publications Seminar, “Making Kerala Go Global”, Kerala, India, January 4-6, 2001
Chair, Engineering Foundation Conference on Froth Flotation and dissolved air flotation, Tahoe, City, May 21,2001.
Honorary Chair, International Organizing Committee, 2001 International Symposium on Nano-Materials and Technology, Beijing, China, July 2 – 5, 2001
Senior Chair, Biobenefication-I, 1999.
Chairman, Department of Chemical Engineering, Material Science and Mining Engineering, until 1997
Session Chair, Fundamentals-A, Engineering Foundation Conference on Development on Non-
Renewable Resources: Challenge and Solutions, November, 1997.
Session Chair on Dynamics of Interfaces and Colloids, International Symposium on Sofia, Bulgaria, July, 1997.
Session Chair, Instrumental and On-Line Analysis, XX International Mineral Processing Congress, Aachen, Germany, September, 1997.
Session Chair, 9th International Conference on Surface and Colloid Science, Sofia, Bulgaria,
July, 1997
Session Chair, XX International Mineral Processing Congress, Aachen, Germany, September, 1997.
Chair, Engineering Foundation Nominating Committee, 1996-1999.
Chairman, Symposium on Recent Advances in Particle Science and Technology, April, 1998.
Session Chair, Conference on Novel Surfactants, Royal Society Chemistry Faraday Division, Wexham, UK, September, 1998.
Session Chair, Fundamentals-A, Engineering Foundation Conference on Development on Non-
Renewable Resources: Challenge and Solutions, November, 1997.
Session Chair on Dynamics of Interfaces and Colloids, International Symposium on Sofia, Bulgaria, July, 1997.
Session Chair, Instrumental and On-Line Analysis, XX International Mineral Processing Congress, Aachen, Germany, September, 1997.
Session Chair, 9th International Conference on Surface and Colloid Science, Sofia, Bulgaria,
July, 1997
Session Chair, XX International Mineral Processing Congress, Aachen, Germany, September, 1997.
Session Chair, International Conference on Mineral Processing: Recent Advances in Future Trends, Kanpur, December, 1995.
Session Chair, 10th Surfactants in Solution Symposium, International Advisory Committee, Caracas, Venezuela, June, 1994.
Session Chair, “Adsorption and Solubilzation”, American Chemical Society, 1994.
Session Chair, National Meeting, First International Particle Technology Forum, 1994.
Session Chairman, Symposium on Enhanced Oil Recovery, 205th National ACS Meeting, Denver, April, 1993.
Session Chairman, Foundation Conference on “Emerging Separation Technologies for Metals and Fuels”, Florida, March, 1993.
Session Chairman, International Mineral Processing Congress, Dresden, Germany, 1991.
Chairman, Peer Committee #11, National Academy of Engineering, 1989-1990.
Chairman, Department of Interior, USBM Research Council of the GenericMineralTechnologyCenter on Comminution, 1990.
Chairman, Organizing Committee, International Conference on Environmental Issues and Management of Waste in Energy and Minerals Production, New Jersey, 1990.
Chairman, 8th International Symposium on Surfactants in Solution, 1990.
Session Chairman, Impact of Past and Current Practices on the Environment: Assessment of Practices and Problems, International Conference on Environmental Issues and Management of Waste in Energy and Minerals Production, New Jersey, 1990
Session Chairman, Dispersion and Classification, 2nd World Congress on Particle Technology, Kyoto, Japan, 1990.
Session Chairman, Surface Chemistry of Coal, Engineering Foundation Conference on Fine Coal Cleaning, Palm Coast, Florida, 1990.
Session Chairman, Innovations in Materials Processing Using Aqueous, Colloid and Surface Chemistry, 118th Annual AIME/SME Meeting, Las Vegas, 1989.
Session Chairman, “Surface and Colloidal Phenomena in Fine Particles Processing- II”, International Symposium on Advances in Fine Particle Processing, Boston, 1989.
Session Chairman, Engineering Foundation Conference on Advances in Coal and Mineral Processing Using Flotation, PalmCoast, 1989.
Chairman, VII International Processing Symposium Session, Istanbul, September, 1998.
Chairman, Session on Fine Particles and Dispersed Systems, 6th International Conference on Surface and Colloid Science, Hakone, Japan, 1988.
Session Chairman, Flocculation I, International Symposium on Production and Processing of Fine Particles, Montreal, Canada, 1988.
Chairman, American Chemical Society, Symposium on Surfactants in Minerals and Materials Systems, 1988.
Senior Chairman, International Symposium on Surfactants in Solution, New Delhi, 1987.
Session Chairman, Indo-US Seminar on Special Topics in Mineral Processing, 1987.
Session Chairman, Separation of Solids, Engineering Foundation 2nd International Conference on Separation Technology, Schloss Elmau, West Germany, 1987.
Senior Chairman, Seminar on Chemistry and Applications of New Reagents for Mineral Benefication, Pune, 1986.
Vice-Chairman, Program Committee, Society of Mining Engineers, 1986.
Chairman, Organizing Committee AIME, Arbiter Symposium on Advances in Mineral Processing, New Orleans, 1986.
Session Chairman, International Symposium on Flocculation in Biotechnology and Separation Systems, Fine Particle Society Symposium, San Francisco, 1986.
Chairman, Program Coordination Committee, SME, 1986.
Fine Coal, Henniker, N. H., 1985.
Session Chairman, Flocculation, ACS Colloid Symposium, Potsdam, 1985.
Chairman, Engineering Foundation Conference Committee, 1984-1995.
Session Chairman, Sedimentation and Consolidation, Sea Islands, Georgia, January 27, 1985.
National Research Council Panel on Engineering Research Energy, Resources Environment, 1984-1988.
Session Chairman, Reagents in Mineral Industry Conference, Rome, 1984.
Chairman, Subcommittee on Conference Format, Engineering Foundation, 1983
Chairman, General Committee, Mineral Processing Div., Society of Mining Engineers/AIME, 1982-83
Chairman, Mineral Processing Div., Soc. of Mining Engineers/AIME, 1982-83
Chairman, Engineering Foundation Conference on “Minerals, Metal and Coal Extraction with Minimum Water Usage and Pollution,” Santa Barbara, January 1982
Assoc. Chairman, Min. Proc. Div., Soc. of Mining Engineers/AIME, 1981-82
Assoc. Chairman, General Committee, Min. Proc. Div., Soc. of Mining Engineers/AIME, 1981-82
Chairman, Program Committee, Mineral Processing Div., Soc. of Mining Engineers/AIME, 1981-82
Chairman, XIV Int. Mineral Processing Congress Organizing Committee for Flotation, 1981/82
Vice-Chairman, Program Committee, Mineral Processing Div., Soc. of Min., Met. & Mineral Engineering, 1980-81
Session Chairman, ACS Meeting, Washington, D.C. 1983.
XIV International Mineral Processing Congress, Flotation Sessions, Toronto, October 1982
111th Annual AIME Meeting, Dallas, February 1982
International. Conference on Surface and Colloid Science, Jerusalem, July 1981
Engineering Foundation Conference on “Interfacial Phenomena in Mineral Processing”, August 1981
1st Regional Vice-Chairman, Mineral Processing Div., Soc. of Mining Engineers/AIME, 1980
Chairman, International Symposium on Fine Particles Processing, Soc. of Mining Engineers 1978-1980
2nd Regional Vice-Chairman, Mineral Processing Div., Soc. of Mining Engineers/AIME, 1979
Surface Chemistry of Coal Impurities, Engineering Foundation on Advances in Coal Processing Technology, Rindge, New Hampshire, August, 1979
Interfacial Aspects of Solid/Liquid Separation, 53rd Colloid and Surface
Science Symposium, Rolla, Missouri, June 1979
Mineral Processing Fundamentals I, 108th AIME Meeting, New Orleans, February 1979
Keynote Session V, International Symposium on Resources Engineering and Technology, Bombay, January 1979
Chairman, National Science Foundation Workshop: “Beneficiation of Mineral Fines: Problems and Research Needs,” Tuxedo, New York, August 1978
AICHE Annual Meeting, Flocculation and Sedimentation Session, Miami, November 1978
“Bauxite and Sulfur – Updating Processing and Handling,” SME Fall Meeting, Lake Buena Vista, Florida, September 1978
Mineral Processing Fundamentals, General Session, 107th Annual AIME Meeting, Denver, February 1978
Chairman, Mineral Processing Fundamentals Committee, AIME, 1977
Session Chairman, 107th Annual AIME Meeting- Fundamentals General Session, (Mineral Processing Division), General Session, 1978.
Chairman Representative, HenryKrumbSchool of Mines, 1976.
ACS Symposium on Recent Developments in Separation Technology – Interfacial Phenomena in Particles Separation, American Chemical Society Centennial Meeting, San Francisco,
August 1976
Chairman, National Science Foundation Workshop: “Research Needs in Mineral Processing,” Harriman, New York, August 1975.
Chairman, NSF Workshop “Objective Research for our Mineral Requirements”, 1975
Program Chairman, Flotation and Flocculation Chemistry, Society of Mining Engineers, 1975.
Session Chairman, Mineral Processing Fundamentals, Session I, AIME, 1975.
Chairman, Mineral Processing Fundamentals Session I, AIME, 1974.
Chairman, Engineering Fundamentals, American Institute of Chemical Engineers, 1974.
Research”, Salt Lake City, August 1974
Vice-Chairman, Mineral Processing Fundamentals Committee, AIME, 1972-76
Chairman, School of Engineering and Applied Science Research Committee, ColumbiaUniversity.
Session Chairman, Mineral Processing Fundamentals, AIME Annual meeting, Dallas, 1974.
Mineral Processing Fundamentals I, 104th Annual AIME Meeting, New York, February 1975
Mineral Processing Fundamentals I, 102nd Annual AIME Meeting, Chicago, February 1973
Mineral Processing Fundamentals, I, 101st Annual AIME Meeting, San Francisco, February 1972
Session Co-Chairman :
Vice Chair, the 2009 Hoover Board of Award.
Co-Chair, “Science and Technology issues in Methane Hydrate R&D” conference organized by the Engineering Conferences International, Kauai, Hawaii, March 5-9, 2006.
Vice Chair, Asian Columbia Alumni Association, 2005.
Co-Chair: International Conference on Benefication of Phosphates.
Co-Chair, 33rd Mid Atlantic Industrial & Hazardous Waste Conference @Manhattan College, Riverdale, NY, “Phosphate waste slimes: problems, remedies & opportunities, Monday, June 18, 2001
Co-Chair, Engineering Foundation Conferences Beneficiation of Phosphates III, St. Pete Beach, Florida, December 2-7, 2001
Co-Chair, Minerals Bioprocessing IV Stockholm, 1999.
Co-Chair, XX International Mineral Processing Congress, 1996-1999.
Co-Chair, 9th International Conference on Surface and Colloid Science, July, 1997
Co-Chairman, XIX International Mineral Processing Conference Committee, 1996
Co-Chairman, XIX International Mineral Processing Congress Program Committee, 1993-1994
Co-Chairman, Advisory Committee, Indo-US Seminar on Special Topics in Mineral Processing, Pune, India, 1987-1989.
Co-Chairman, Engineering Foundation Conference on Science and Technology of Processing Co-Supervisor, PhD., Flotation Committee, Central South University of Technology, Changsha, People’s Republic of China, 1986.
Co-Chairman, Engineering Foundation Conference, Flocculation and Sedimentation and
Consolidation, Sea Islands, Georgia, January 27 – Feb. 1, 1985.
Co-Chairman, International Symposium on Resources Engineering and Technology, Bombay, January, 1979
Co-Chairman, AICHE Symposium, “Application of Interfacial Phenomena in Flotation
Opening Session, NSF Workshop on Beneficiation of Mineral Fines, Sterling Forest, NY August 1978
Current Fine Beneficiation Problems in Mineral Industries, NSF Workshop on Beneficiation of Mineral Fines, Sterling Forest, NY, August 1978
Invited Participants:
- Moderator, “Opportunities in Nanotechnology and Biotechnology” conference session, Third Global Indian Entrepreneurs Conference, New YorkSeptember 12 – 15, 2002
- National Science Foundation Workshop in “Fundamental Problems of Tertiary Oil Recovery,” Austin, June, 1974
- Workshop on “Physicochemical Mechanisms of Dental Caries,” National Institute of Dental Research, Warrenton, Virginia, June 1973
