1. Convener: International conference on Climate Change and Developing Countries, Feb.19-22, 2010
2. Convener: International Conference on Advanced Oxidation Processes, Sept.18-21, 2010, Kottayam
3. Convener: International Conference on Membranes: Environmental and Biological Applications, Sept.16-19, 2011, Kottayam;
4. Convener, Second International Conference on Membranes (ICM – 2013) Oct.3-6, 2013, Kottayam, Kerala
5. Organising Committee member, International conference on Frontiers of Mass spectrometry (ICMS 2013) Sep. 6-9, 2013, Kottayam, Kerala
6. Organising Committee member, Third International Conference on Advanced Oxidation Processes (AOP 2014) Sep 2014, Munnar, Kerala
7. Convener: International conference on water: From pollution to purification, 23 – 26 January 2015, Kottayam, Kerala
8. Convener, Third International Conference on Membranes (ICM2015), Aug.21-23, 2015
9. Convener, Forth International Conference on Membranes (ICM2017), Sept.30-Oct.3, 2017, Alappuzha
10. Coordinator: International Conference on Water: From Pollution to Purification, Dec.7-10, 2018, Kottayam
11. Coordinator: International Conference on Separation Science and Technology (ICST), December 13-16, 2019, Kottayam
12. Coordinator: 4th International Conference on Frontiers of Mass Spectrometry (ICMS), December 04-07, 2019, Kottayam