S.P. Dubey, K. Gopal and J.L. Bersillon; Efficiency, Characterization and safety evaluation of adsorbents for the purification of drinking water – An Overview, presented in the National symposium on Recent Trends in Environmental Biology and Biotechnological Approach to Conserve Biodiversity, 25th annual session, 22-24 October, 2005 at Gulbarga, India

    S.P. Dubey and K. Gopa     l; Removal of heavy metals by the use of adsorbents from drinking water, presented in the International Conference on Toxicology, Environment and Occupational Health (ICTEOH), 14-17 November, 2005 at Lucknow, India

    S.P. Dubey and K. Gopal; Low cost activated carbon derived from agricultural waste material and use for the removal of hexavalent chromium, presented in the International Conference on International Conference on Toxicology, Toxicogenomics and Occupational Health (ICTTOH), 9-11 October, 2006 at Gwalior, India

    S.P. Dubey and K. Gopal; Removal of Hexavalent chromium from aqueous solution using activated carbon derived from Eucalyptus bark, published in the 68th Annual International Water Conference, October 21-25, 2007 at Orlando, Florida, USA

    S.P. Dubey and K. Gopal; Characterization of disinfection byproducts in drinking water and its use associated health risk, presented in the National symposium on Biomarkers of Environmental Problems, 27th annual session, 26-28th October, 2007 at Meerut, India

    S.P. Dubey and K. Gopal; Application of natural adsorbent in the removal of hexavalent chromium for the purification of water, in National Symposium on Environmental stress and bioresource management, 28th annual session, Jamia Hamdard, New Delhi, India, November 20th – 22nd, 2008. 

    S.P. Dubey,A.D. Dwivedi, I.-C. Kim,M. Sillanpaa,Y.-N. Kwon, C. Lee, Synthesis of carbon based nanomaterials an6d their applications in the removal of water contaminantsin ACS National meeting, San Francisco, USA, 10-14 August, 2014.

    S.P. Dubey, Y.-N. Kwon, C. Lee, Synthesis of graphene oxides and carbon spheres for applications in the removal of water pollutants in Korean Society of Industrial & Engineering Chemistry(KSIEC) Fall Meeting, Daegu, South Korea, November 12~14, 2014.

  S.P. Dubey, Green-(nano) material optimization and their application in environmental remediation,  22nd International Conference on Green Chemistry and Technology September 13-14, 2021 WEBINAR

    S.P. Dubey, Graphene hybrid aerogel: Catalytic and adsorptive applications in water purification International Conference on Material Processing and Applications, March 1-3, 2023, College of Commerce Art & Science, Patna, Bihar, India.