Start
Nov 20, 2014 - 15:00
End
Nov 20, 2014 - 16:00
Venue
Room 118 Creativity Hall Chemical Engineering
Event Type
Speaker
Dr. S. Laxmi Gayatri Research Associate Chemical Engineering & Process Development Division CSIR-National Chemical Laboratory Pune.
Title
New material Development for Environmental applications
Abstract: The research for development of new materials and evaluation of these materials for potential applications in environmental pollution control is a growing subject of research. The recent development in nanoscience surface chemistry and environmental engineering has a substantial influence in the paving the way for development of nanoscale materials adsorbents porous materials nano-catalyst photocatalytic materials coagulant formulations etc. There is always a scope for development of new materials through modifications and understanding of the surface phenomenon. The goal is to evolve materials that have specific application with maximum sustainability and techno-economical ease for removal of contaminant species. These materials may also be specifically developed/functionalized for wide spectrum of environmental applications like Desulfurization of transportation fuels i.e. the removal or reduction of sulfur content from gasoline and diesel; removal of dyes acids phenolic compounds etc from industrial wastewaters. In the development of any industrial wastewater treatment methodology and also for dye wastewater a wise combination of various techniques generally physico-chemical techniques in a sequential manner offers a nearly complete solution. In this regard the application of formulated coagulants as a pretreatment in decolorization of dye wastewater and maximum removal of wastewater parameters like COD BOD and TOC requires understanding of the mechanism behind the colloidal dispersion charge phenomenon composition of coagulant species size of the cation in case of metal ions etc requires detailed investigation. In case of photocatalytic materials for dye degradation the supporting media for porous materials may vary from modified forms of various activated carbons to nanocomposites to fibres to mesoporous silica. The strategy of combining different technologies for treatment of refractory pollutants is a potential advantage of new material development like in the case adsorption coupled photo catalytic dye degradation. In short for selective and efficient removal of pollutants from aqueous or non-aqueous phase a deep understanding of material properties/screening of materials along with comprehensive investigation for standardization of process removal is necessitated.Bio-sketch: Dr.Laxmi Gayatri Sorokaibam pursued Ph.D. at Department of Chemistry National Institute of Technology (NIT) Silchar Assam. Her doctoral work was concerned with development of new biomass based adsorbent materials for phenolic wastewater treatment. Her research interest is development of new materials composites modification of the existing material manipulation of surface properties and surface interactions with specific selectivity towards different organic pollutants particularly dyestuffs. Currently Dr. S. Laxmi Gayatri is working as a Research Associate at Chemical Engineering & Process Development Division (CEPD) of CSIR-National Chemical Laboratory Pune. She is a part of CSIR project ‘Sustainable Environmental Technologies for Chemical & Allied Industries (SETCA)’ under the leadership of Dr. Vinay M. Bhandari (Scientist F and Professor AcSIR). At CSIR-NCL she has worked on Adsorptive desulfurization of Transportation fuels development of coagulant formulations for dye wastewater treatment and development of treatment methodologies for various industrial effluents.