- Organized International Workshop SARASWATI-2.0 EU-India annual consortium meeting, 6-7 December, Kolkata India.
- International organizing committee member for IWA SPECIALISED CONFERENCE ON WATER AND WASTEWATER MANAGEMENT WITH SPECIAL INTEREST TO DEVELOPING COUNTRIES at Murdoch University,Western Australia, December 2023.
- Webinar on “Moving towards sustainable sanitation and efficient water use practices” organized jointly by WIN foundation and IIT Kharagpur on 3rd September 2020.
- First specialized Indo-Belgium joint workshop on “Upscaling of Bio-electrochemical Systems for Wastewater Treatment and Bioelectricity Recovery” at Indian Institute of Technology Kharagpur, India, February 26-27, 2020, Total participants 109.
- Coordinator for AICTE short term course title “Waste to Wealth – the paradigm, the practice and the potential”, one week, Rs. 450,000/-. 25-29 November 2019., IIT Kharagpur
- Coordinator for TEQIP-AICTE short term course title “Recent Trends in Industrial Pollution Control and Regulation” 19 – 23 November 2018, IIT Kharagpur
- Convener for INDO-EU workshop on “The Recent Developments In Microbial Fuel Cell And Membrane Bioreactor Technology”, February 2 – 3, 2018, IIT Kharagpur.
- Coordinator of the course on Environmental Electrochemistry under Global Initiative of Academic Network (GIAN) from 20 – 29 June 2016 at IIT Kharagpur.
- Coordinator for International Symposium on “New Horizons in Bioenergy Research” 14-16 January 2012 at IIT Kharagpur
- Organizing committee member for International Symposium on Bioenergy, 5-7 January 2010, Bioenergy Symposium Series at IIT Kharagpur
- Coordinator for National Symposium on Bioenergy, IIT Kharagpur, 23rd November 2009.
- Coordinator for Short term course sponsored by A.I.C.T.E. on Waste Minimization and Bio-energy Recovery, November 22-26, 2009, Department of Civil Engineering, Indian Institute of Technology, Kharagpur – 721 302.
- Coordinator for Short term course sponsored by A.I.C.T.E. on Advanced Technologies for Water and Wastewater Treatment, November 20-25, 2006, Department of Civil Engineering, Indian Institute of Technology, Kharagpur – 721 302.
- Worked as Coordinator for short term training programme on topic Environmental Pollution Control, July 14-25, 2003, sponsored by A.I.C.T.E. & I.S.T.E, New Delhi, Department of Civil Engineering, Government College of Engineering, Aurangabad, India.
- Worked as Organizing Secretary, National Environmental Awareness Campaign, the activity sponsored by MoEF, New Delhi, India for six times for the years 1998 to 2003 at Government College of Engineering, Aurangabad.
- Worked as Organizing Secretary for two national seminars sponsored by A.I.C.T.E., New Delhi, India a) Financing, Design, Construction and Operation of Highway, February 07-08, 2002 and b) Teacher vacancies in degree and diploma level technical institutions, January 11-12, 1999, Department of Civil Engineering, Government College of Engineering, Aurangabad, India.
Dr. Ghangrekar
Ph.D Environment