Education

Research Interest

• Separation processes: (Adsorption, extraction, ectrocoagulation, various surfactant mediate processes, RO/NF/UF/MF etc.
• Membrane technology: Smart/stimuli responsive membranes (Fabrication and application of Ceramic/polymeric membranes for environmental, biological and chemical separation).
• Water and wastewater treatment technologies
• Catalysis, Nanoparticles and nanocomposites
• Advanced materials
• Bio-diesel, Bio-products
• Environmental pollution control
• Treatment of industrial effluent
• Fruit and vegetable juice processing
• Extraction of value added products from plant and industrial sources
• CO₂ to products and liquid fuels.

Experience

Present and past positions held:

Dean	Alumni and External Relations, Indian Institute of Technology Guwahati	January 2021 onwards
Chair Professor	National Jal Jeevan Mission, Govt of India	March 2022 to March 2027
Head	Centre for the Environment, Indian Institute of Technology Guwahati	May 2018 to February 2021
Professor	Department of Chemical Engineering, Indian Institute of Technology Guwahati	July 2015 onwards
Associate Professor	Department of Chemical Engineering, Indian Institute of Technology Guwahati	November 2008 to June 2015
Assistant Professor	Department of Chemical Engineering, Indian Institute of Technology Guwahati	September 2005 to November 2008
Senior Lecturer	Department of Chemical Engineering, Indian Institute of Technology Guwahati	December 2004 to September 2005

Honorary Positions:

• Visiting Scientist, Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), USA, July 2010 – June 2011.
• Visiting Professor, National Ilan University (NIU), Taiwan, May – July, 2017
• Visiting Expert, National Yunlin University of Sci. and Technology (Yun Tech), Taiwan, May 2018.
• Visiting Professor, National Ilan University (NIU), Taiwan, June – July, 2018
• Visiting Professor, GIFU university, Japan, May-June, 2019

Member of Important Committee:

• Core Member of Programme Advisory Committee on Chemical and Environmental Engineering (PAC-CEE). Science and Engineering Research Board (SERB), DST, New Delhi, 12/07/2021 on ward for 3 years. 
• Special Invitee Member in the Technical Committee under Chairmanship of Principal Scientific Advisor (PSA) to the Govt of India for examination and use of innovative technologies in drinking water and sanitation sector. September, 2022 onward.
• State Level Task Force Member (TFM) in the Atal Mission for Rejuvenation and Urban Transformation (AMRUT), Govt of Assam, India, 2022 onward.
• Expert Consultative Committee (ECC) member of “Waste to Wealth” Mission under The Prime Minister's Science, Technology and Innovation Advisory Council (PM-STIAC), New Delhi, January 2021 onward.
• Esteem Expert Panel Member of Water Technology Initiative Programme, DST, Govt. of India (WTI (DST)), 2021 onward.
• PAC member of Department of Biotechnology (PAC-DBT), Govt. of India, 2020-2022.
• Independent “Technical Expert” of Water Quality India Association (WQIA), January 2023 onward.
• Expert in Faculty selection committee in several IITs, NITs and Universities.
• Expert member for the project evaluation committee European Science Foundation (ESF), France, 2020 onward and FWO (Belgium).
• International PAC member of Fonds Voor Wetenschappelijk Onderzoek (Fund for Scientific Research; Flanders, Belgium, Brussel) FWO 2022 onward.  
• Water Quality Task Force member of PHED, Govt. of Assam, Since July, 2016 - June 2021. 
• Advisory of 107 MLD drinking water supply plant of  GAMMON India, Ltd, Guwahati.  Aug 2017 - Sept 2020. 
• Core Committee member of Task Force PHED, Govt of Assam, Since Oct, 2017 - Sept 2021. 
• Expert committee member for the selection of sector expert for ground truthing and technical assistance in implementation of Jal Jeevan Mission (JJM), National centre for drinking water, sanitation and quality, 2022. 
• Advisor of IOCL, Betkuchi terminal for their Rain water harvesting plant  Oct, 2019 – Sept 2019.
• Technical director of M/s Vixudha Bio Products Pvt. Ltd. for commercial production of various antioxidants from biological sources. Since July, 2018
• Technical director of RD Grow Green India Pvt. Ltd. manufacturing water treatment plant. Since May. 2016
• Associate Editor for 5 years from Oct. 18, 2010, International Journal of Chemical Research.
• Associate Editor for 5 years from Oct. 18, 2010, Journal of Biomedical and Bioengineering.
• Editorial Board Member Journal of Membrane Science & Technology. 
• Guest Editor, Special Issue on "Waste Management using BioScience and Technology" in the International Journal of BioSciences and Technology.(2008).
• Editorial Board member of International Journal of Chemical Engineering Research
• Honorary Member of the Editorial Board of the International Journal of BioSciences and Technology.(2008).
• Member of the Editorial Board of the International Journal of Nano Science and Technology, (2012).

Books

Authored Reference Books
Edited Books