Membranes for Specific Separation or Reaction
Gas or Liquid Separation Membranes
Nanostructured Porous Materials (Inorganic and Polymer Based)
Pressure Driven and Chemical Potential Driven Separation Processes
Characterization of the Materials in the Nanometer/ Atomic Length Scale
Small-Angle Scattering Techniques
Atomic Force and Electron Microscopy Techniques
Building on membrane capability for diverse applications
A membrane is a barrier between two phases that allows selective passing of some components. The membrane process can be used to remove a wide range of components, ranging from suspended solids to pathogens, small organic compounds, dissolved ions and gaseous molecules. Because of its low cost, compact modular units and no moving parts, it has acquired a significant position by replacing many of the conventional unit operation processes. The performance of the membrane is typically based on membrane properties or other properties of the components to be separated. Polymeric based membrane is widely used for various separation and purification applications though inorganic membrane is becoming increasingly important for applications at high temperature and harsh condition.
The fundamental understanding of the membrane materials are required to assess the membrane processes. Some membrane processes deal with species of sub-nanometer size ranges and therefore one has to look in the nanometer length scale with the scale of resolution of the observations in angstroms. Therefore, the techniques which can give resolutions of the observation in the angstrom scale are required to understand characteristics of the membrane in order to improve the membrane performance. We have been investigating on the preparation, characterization and performance testing of various types of membranes to understand structure-property-performance correlation. My responsibilities primarily are (1) core activities of the institute on probing the underlying science for technological advancement on the development of membranes of thin film composite polyamide and hollow fiber membranes (reverse osmosis, nanofiltration, ultrafiltration) for sustaining competitive advantage in water and waste-water treatment applications and (2) basic and exploratory research of other membrane systems like pervaporation, gas separation and new membranes materials like nanocomposite, zeolite membrane with a greater sense of purpose.