Name :   Dr.Vidyadhar Ari

Designation :   Senior Principal Scientist

Contact Information :

• Email id :  ari@nmlindia.org
• Mobile/Phone no:  09471309883

Educational Qualification :   Ph.D (Lulea University of Technology, Sweden)

Areas of Expertise :   Surface Chemistry, Froth Flotation, Adsorption Mechanisms, Fine Particle Processing, Coal Preparation, Iron Ore Beneficiation, Recycling of Electronic Waste, Mineral Processing.

No. of Papers Published :   21

• International :   1. Mohana Rao A, A. Vidyadhar, Ranjit Prasad and Monica Sahoo, “Efficacy of pilot scale Batac jig on LVC coal utilization for coke making”, Transactions of Indian Institute of Metals, 76 (6), 1553-1561, 2023. 2. Mohana Rao A, A. Vidyadhar and Ranjit Prasad, “Recovery of clean coking coal from difficult-to-wash low volatile coking coal fines of Jharia coalfield by multigravity separator”, International Journal of Coal Preparation and Utilization, 43(6), 1098-1118, 2023. 3. Mohana Rao A, A. Vidyadhar and Ranjit Prasad, “Beneficiation of difficult-to-wash Indian low volatile coking coal fines by falcon concentrator”, International Journal of Coal Preparation and Utilization, 42(12), 3618-3636, 2022. 4. Rakesh Sah, A. Vidyadhar and Avimanyu Das, “Study of cut point density and process performance of floatex density separator in fine coal cleaning”, Particulate Science and Technology, 35(2), 239-246, 2017. 5. A. Vidyadhar, “A review of technology of metal recovery from electronic waste”, E-Waste in Transition – From Pollution to Resource, Dr. Florin-Constantin Mihai (Ed.), INTECH, Chapter 6, pp. 121-158, 2016, ISBN 978-953-51-4592-9. 6. A. Vidyadhar, Neha Kumari and R.P. Bhagat, “Adsorption mechanism of mixed cationic/anionic collectors in quartz-hematite flotation system”, Mineral Processing and Extractive Metallurgy Review, 35, 117-125, 2014. 7. A. Vidyadhar and A. Das, “Enrichment implication of froth flotation kinetics in separation and recovery of metal values from printed circuit boards”, Separation and Purification Technology, 118, 305-312, 2013. 8. A. Vidyadhar, G. Chalavadi and A. Das, “Stratification and segregation features of pulverised electronic waste in flowing film concentration”, Journal of Environmental Management, 118, 49-54, 2013. 9. Subrata Roy, Vidyadhar Ari, Jayanta Konar and A. Das, “Metal enrichment of finely ground electronic waste using eddy current separation”, Separation Science & Technology, 47: 12, 1777-1784, 2012. 10. Sujit Kumar Dey, Vidyadhar Ari and Avimanyu Das, “Processing of electronic waste in a counter current teeter-bed separator”, Journal of Environmental Management, Vol. 107, 45-51, 2012. 11. A. Vidyadhar, Neha Kumari and R.P. Bhagat, “Adsorption mechanism of mixed collector systems on hematite flotation”, Minerals Engineering, 26, 102-104, 2012. 12. A. Das, B. Sarkar, A. Vidyadhar and S. Roy, “Efficient recovery of combustibles from coking coal fines”, Mineral Processing and Extractive Metallurgy Review, 31 (4), 236-249, 2010. 13. A. Das, A. Vidyadhar and S.P. Mehrotra, “A Novel Flowsheet for the Recovery of Metal values from Waste Printed Circuit Boards”, Resources, Conservation & Recycling, 53, 464-469, 2009. 14. A. Das, B. Sarkar, A. Vidyadhar, A.K. Singh and K.K. Bhattacharyya, “A Novel Beneficiation Scheme for a Medium Coking Coal Fines from India”, International Journal of Coal Preparation and Utilization, 28 (4), 189-200, 2008. 15. A. Vidyadhar and K. Hanumantha Rao, “Adsorption Mechanism of Mixed Cationic/Anionic Collectors in Feldspar-Quartz Flotation System”, Journal of Colloid and Interface Science 306, 195-204, 2007. 16. A. Vidyadhar, K. Hanumantha Rao and I.V. Chernyshova, “Mechanisms of Amine-Feldspar Interaction in the Absence and Presence of Alcohols Studied by Spectroscopic Methods”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 214 (1-3), 127-142, 2003. 17. A. Vidyadhar, K. Hanumantha Rao, I.V. Chernyshova, Pradip and K.S.E. Forssberg, “Mechanisms of Amine-Quartz Interaction in the Absence and Presence of Alcohols Studied by Spectroscopic Methods”, Journal of Colloid and Interface Science, 256, 59-72, 2002. 18. A. Vidyadhar, K. Hanumantha Rao, and K.S.E. Forssberg, “Separation of Feldspar from Quartz: Mechanism of Mixed Cationic/Anionic Collector Adsorption on Minerals and flotation Selectivity”, Minerals and Metallurgical Processing, 19 (3), 128-136, 2002. 19. A. Vidyadhar, K. Hanumantha Rao, and K.S.E. Forssberg, “Adsorption of N-Tallow 1,3-Propanediamine-Dioleate Collector on Albite and Quartz Minerals, and Selective Flotation of Albite from Greek Stefania Feldspar Ore”, Journal of Colloid and Interface Science, 248, 19 –29, 2002. 20. I.V. Chernyshova, K. Hanumantha Rao, A. Vidyadhar and A.V. Shchukarv, “Mechanism of Adsorption of Long-Chain Alkylamines on Silicates: A Spectroscopic Study. 2. Albite”, Langmuir, 17, 775-785, 2001. 21. I.V. Chernyshova, K. Hanumantha Rao, A. Vidyadhar and A.V. Shchukarv, “Mechanism of Adsorption of Long-Chain Alkylamines on Silicates: A Spectroscopic Study. 1. Quartz”, Langmuir, 16, 8071-8084, 2000.
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Awards and Recognitions :   1. Outstanding Scientist - 2014, September 2014 Selected as one of the “Outstanding Scientist” from the TOP 100 Scientists by IBC’s (International Biographical Centre), Cambridge, England. 2. TOP 100 Scientists - 2014, April 2014 Selected as one of the IBC’s (International Biographical Centre) TOP 100 Scientists - 2014, Cambridge, England. 3. Ecoreco – Innovation Award, September 2013 Receipient of Ecoreco – Innovation Award for the project titled “Physical and hydrometallurgical beneficiation of poly cracker ash to enrich the metal concentrate” for successful outcome in terms of commercial exploitation. 4. Published Top Rated Article, BioMedLib – Who is Publishing in My Domain, July 2013 The article titled “Adsorption mechanism of mixed cationic/anionic collectors in feldspar-quartz flotation system” by A. Vidyadhar and K. Hanumantha Rao, J. Colloid Interface Sci; Feb 15; 306(2): 195-204, 2007 ranked No: 1 article from the Top 20 articles, in the domain of article 17098246, since its publication (2007). Ref: http://wipimd.com/?&sttflpg=8c4e4c3f7dd23296d7e0d5d1cff51e86fc55cf7e4ca8ca22 5. Who’s Who in the World, Marquis Who’s Who in America since 1899, May 2013 Biography has been selected for the Who’s Who in the World 2014 (31st Edition) . 6. First prize in Oral Presentation, January 2013 Recipient of First prize in oral presentation for the paper titled “Beneficiation of high ash Indian non-coking coal from Vasundhara mines, Odisha, by A. Vidyadhar, Renuka, M. Sharma and A. Das, presented in the National Seminar on “Exploitation of Lean Grade ore, Ore Fines and Urban Ores: Challenges, Problems and Solutions (LGO-2013)” held at CSIR-NML during 22-23 January 2013. 7. Gold Award Winner, November 2010 Recipient of Gold Award Winner, Theme Pavillion on “Mining, Minerals & Materials” at CSIR Techno Fest 2010, Science & Innovation for Transforming India during 14-27 November 2010, Pragati Maidan, New Delhi. 8. Khare Award (Coal), October 2009 Recipient of Khare Award (Coal) for the best paper titled “Modelling of fine coal processing in a teeter bed separator” by A. Das, A. Vidyadhar and S.K. Dey, presented in the International Seminar on “Mineral Processing Technology (MPT–2009)” held at Bhubaneswar during 28-30 October 2009.