Sanjay M Mahajani
125, Chemical Engineering
Manudhane Best Undergraduate Teacher Award (2006)
Manudhane Award for Applied Research (2007)
Excellence in Teaching IIT Bombay (2008)
A various heterogeneous catalysts such as zeolites and metal oxide were developed for the synthesis of biodiesel from vegetable oil. This study mainly involves development of reaction kinetics and using both homogeneous and heterogeneous reactions. The kinetic parameters have been estimated with the help of regression analysis. The esterification and trans-esterification reactions has been performed in packed bed reactor using the selected catalysts to increase the conversion in a continuous mode.
Multifunctional reactors combine reactor with other unit operation such as distillation, adsorption, stripping etc. These have several advantages such as reduction in capital cost, increasing selectivity and conversion and decrease in overall cost of the process. Initially, feasibility studies were performed using both experimental and theoretical investigations in several multi-functional reactors such as reactive distillation, reactive chromatography and extractive reactions for industrially important processes (esterification reactions, etherification reactions etc). The mathematical models have been developed and were validated using experimental results. Geometric methods or simulator based design methodologies have been proposed which give good initial estimates of overall process.
Underground coal gasification (UCG) is a well proven technology which permits access to coal which either lies too deep underground, or is otherwise too costly to be exploited using conventional mining techniques. UCG product gas may be used as a chemical feedstock or as fuel for power generation. Various laboratory scale experiments were performed to determine kinetics in the contest of UCG. A mathematical model of UCG process has been developed and is validated using laboratory scale UCG experiments.