- Invited talk at Kiyoto Institute of Technology-IIT Guwahati Joint symposium, KIT, Japan, 4th August, 2016.
- Invited talk at Gifu University-IIT Guwahati Joint symposium, Gifu University, Japan, 1st August, 2016.
- Invited talk at TechXetra 2015, "Annual, national-level techno-cultural festival of Tezpur University" Tezpur University, 30th Oct to 1st Nov., 2015.
- Invited talk at National Seminar cum workshop on "Innovative Prospects in Food Processing: Integration of Engineering and Biological Sciences" at Department of Food Engineering and Technology, Tezpur University, March 27-28, 2015.
- Invited talk at TEQIP STC on "Emerging Micropollutants in the Environment: Occurrence, Transportation, Monitoring and Treatment" at Department of Chemical Engineering, IIT Guwahati, March 02-05, 2015.
- Invited talk on "Applications of Membrane Technology for the Treatment of Organic Pollutants" at Defence Research Lab, DRDO, Tezpur, December 16-17, 2014.
- Invited talk on "Introduction to Membrane Separation Technology" at Centre for the Environment, IIT Guwahati, December 9-10, 2014.
- Invited lecture on "Water and wastewater treatment using electrospun PVA nanofiber membranes" at The Centre for the Environment, IIT Guwahati, 20th June, 201
- Invited lecture on "Low cost ceramic membranes: A new approach towards membrane technology" at The Energy and Resources Institute (TERI), New Delhi, India, 16th April, 2014.
- Invited lecture on, "QIP STC on: Advanced Chemical Process Design (ACPD)" at Department of Chemical Engineering, IIT Guwahati, 08-12 July 2013.
- Invited lecture on "QIP Short Term Course on Biotechniques for Pollution Control and Resource Recovery" at Centre for the Environment, IIT Guwahati, July 1-5, 2013.
- Invited lecture and conduction of training at Centre for the Environment, IIT Guwahati in 3-day training program (26th-28th Nov. 2012) on "Green Chemistry and Clean Technology", funded by Central Pollution Control Board (CPCB) of India.
- Workshop on Role of IPR in Entrepreneurship Development, April 9, 2004, IIT Kharagpur (Organized by SRIC, IIT Kharagpur).
- Workshop of International Patenting: Issues and Methods, January 13, 2005, IIT Kharagpur (Organized by SRIC, IIT Kharagpur).
- National Workshop on Intellectual Property Rights Education and Research, December 2-3, 2005, IIT Kharagpur (Organized by SRIC, IIT Kharagpur in association with World Intellectual Property Organization (WIPO).
- Industry-Academia Workshop on "Technology Imperatives for Exploration and Production of Oil & Gas" March 17-20, 2010, Oil and natural Gas Corporation Limited (ONGC) and Petroleum Federation of India (PETROFED), Kaziranga, Assam.