UGC Research Scientist 'C'
Professor's Grade (January, 1996- onward)
UGC Research Scientist 'B', Reader's Grade (January, 1991- December 1995)
Research Associate, University of Cambridge, UK (October 1984 - December 1990)
Associate Lecturer in Chemical Engineering (July 1982-February 1984)
Visiting Professor in Chemical Engineering (August 1996- October 1996)
Department of Chemical Engineering, University of Cape Town, South Africa

Subjects Taught
Chemical Engineering Operations, Mass Transfer Operations, Environmental Engineering & Pollution Control, Energy Resources and Utilisation, Design of multiphase reactors, Separation Processes I & II, Chemical Reaction Engineering, Chemical Project Economics

Research Interests
Design of Cavitational Reactors and Cavitation Chemistry, Wastewater Treatment, Water Disinfection, Ballast Water Treatment, Design of Multiphase Reactors, Protein Isolation, Lipase Synthesis and immobilization

• Consultant to Color Frost Pvt. Ltd., Bombay
  
• Sarang Chemicals, Ankaleshwar
  
• Perfect Protein Pvt. Ltd. Mahad
  
• Aroni Chemicals, Nagda
  
• Voltas Ltd. Bombay; India Glycol Ltd. New Delhi
  
• Asian Paints Ltd., Mumbai
  
• Marico Industries Ltd.
  
• Godrej Soaps Ltd.
  
• Herdilia Oxides and Electronics Ltd. Chiplun
  
• Unilever Research Labs., Mumbai
  
• Ricinash Oil Mills, EPRI, Pittsburgh USA
  
• Bombay Dyeing and Mfg Ltd., Mumbai
  
• Padmavati Oil Mills, Shirpur
  
• Godrej Industries Limited
• Dr. Reddy's Laboratories

• Fellow, Indian National Academy of Engineering, 2006
   
  
• Prof. R.A. Rajadhyaksha Best Teacher Award of UICT, 2006, 2004, 2001, 2000, 1997.
   
  
• IIChE-Dr. Dr. A.V. Ramarao's Foundation award for the Best Ph.D. Thesis/Research award in Chemical Engineering/Technology for the year 2004 (Guide)
   
  
• Distinguished Alumnus award, Institute of Technology-Banaras Hindu University, 2004
   
  
• IIChE Herdilia award for excellence in basic research, 2001
   
  
• VASVIK award for the year 1996
   
  
• Fellow, Maharashtra Academy of Sciences, 1996
   
  
• Maharashtra State National Award for Outstanding Research, 1994; Indian Society for Technical Education (ISTE)
   
  

• Development of unified design procedures for a variety of multiphase reactors such as gas-liquid, gas-liquid-solid bubble columns, solid-liquid fluidized beds, externally circulated/agitated loop reactors. Correlations based on energy dissipation/requirement have been developed for the prediction of mixing, heat and mass transfer and bubble size distributions. The concepts and correlations have been widely used in the industry.

• More efficient and multipurpose impeller design (internationally patented) have been developed for a variety of operations such as mixing, suspension, gas dispersion etc.

• A novel, simple in operation and maintenance, pump stirred reactor have been developed and has found use in a variety of operations in chemical industry.

• Harnessing cavitation energy; Reactions which require high temperature (150 to 400oC) and pressures (2 to 20 atm) have been successfully carried out at room temperature and pressure. This opens up tremendous possibilities industrially and is awaited implementation.

• Novel method for the disruption of the microbial cells/bacteria have been developed which is at least 2 orders of magnitude more energy efficient than the conventional techniques. Large scale disruption as required industrially is now a reality.

• Fundamental understanding has been developed for the flow of foams through pipes. This is a very useful result for the food and pharmaceutical industry.

• A sound fundamental understanding of the cavitation phenomena occurring in different types of cavitating systems such as acoustic and hydrodynamic has been developed. This has led to novel reactor designs. Engineering design methods have been given for these type of reactors. Many industrially important reactions have been carried out on lab scale and pilot plant scale.

• Cavitation generated hydrodynamically has been proved to be useful upto 50-200 lits of scales and the optimization techniques used based on the fundamental understanding of the bubble dynamics have been found to enhance the cavitational yields over 3 to 5 times that of ultrasonically generated cavitation. The scale-up of the hydrodynamic cavitating equipments can be done on the basis of known chemical engineering principles and with an increased reliability.

• Life member, Indian Institute of Chemical Engineers
   
  
• Member, Advisory Committee, Ministry of Petroleum