Chandra Sekhar Gahan
Professor
Work Experience
Professor- Dept. of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, Aug 2023-Till Date (continuing) Associate Professor- Dept. of Environmental Studies, Visva-Bharati, Santiniketan, West Bengal, May 2023 – Aug 2023 Assistant Professor-Dept. of Microbiology, Central University of Rajasthan, Aug. 2013 – May 2018 Associate Professor-Dept. of Sports Bioscience, Central Univ. of Rajasthan, May 2018 – Dec. 2021 Assistant Professor-Dept. of Microbiology, Central University of Rajasthan, Dec. 2021 – May 2023 Experienced Researcher (Marie Curie Fellow), Dept. of Mining Engineering, Suleyman Demirel University, Isparta Turkey, April 2013 – Aug. 2013 Assistant Professor (Research) -SRM Research Institute, SRM University, Kattankulathur, Tamil Nadu, April 2012 – March 2013 Senior Researcher, Industrial Materials Dept., Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea, March 2011 – April 2012. Post-Doctoral Research Fellow – Chemical Engineering Department, University of Cape Town, South Africa, May 2010 – Feb 2011 Post-Doctoral Research Fellow- Process Metallurgy Division, Dept. of Chemical Engineering and Geosciences, Lulea University of Technology, Sweden, Dec. 2010 – May 2011 Project Assistant – Biominerals and Biotechnology Dept. CSIR Institute of Minerals & Materials Technology , Bhubaneswar, Odisha, Dec 2004 – Feb. 2006.
Area of Specialization
Bioprocess engineering, Biohydrometallurgy, Applied Microbiology, Environmental Biotechnology, Waste Recycling, Industrial waste utilization, E-waste management, Chemical Engineering, hydrometallurgy, Metallurgical engineering
Projects & Patents
1. Name of Project: Innovative Biohydrometallurgical approach to recover metal values from petroleum refinery spent catalyst Funding Agency: SCIENCE & ENGINEERING RESEARCH BOARD (SERB) (Statutory Body Established Through an Act of Parliament: SERB Act 2008), Department of Science and Technology, Government of India, India Starting Date: 27th November 2015 End date: 26th November 2018 Approved: July 2015 Status: Completed Total Outlay: 25.6 Lakhs File No. YSS/2014/000895 2. Name of Project: Effect of Cl- ion with variable cations (K+, Na+, Ca2+ and NH42+) on the Fe2+ oxidation and the ΔpH dependence on the maintenance co-efficient (ms) in a Leptospirillum dominated chemostat culture Funding Agency: FP7 Marie curie-Co-Funded Brain Circulation Scheme fellowship (TUBITAK) Co-Funded by European Union FP7 and TUBITAK, Turkey Date of Submission: October 2012 Approved: December 2012 Status: worked for 5 months (April 2013-August 2013)
Education
Secondary, Sunshine Mission School, Bhadrak, Indian Certificate Secondary Education (ICSE). Higher Secondary (+2 Science), Vyasanagar College, Jajpur Road, Odisha Council of Higher Secondary Education, Bhubaneswar, Odisha India B.Sc Hons. Zoology (Hons.) Botany and Chemistry, Bhadrak College, Bhadrak, Odisha, Fakir Mohan University, Balasore, Odisha M.Sc. Applied and Industrial Microbiology, Utkal University, Bhubaneswar, Odisha Lic. Tech. Process Metallurgy ((Biohydrometallurgy and Bioprocess Engineering) Lulea University of Technology, Lulea Sweden Ph.D Tech. Process Metallurgy ((Biohydrometallurgy and Bioprocess Engineering) Lulea University of Technology, Lulea Sweden
Achievments/Awards/Honors
1. Young Scientist Award, 3rd International Conference on Bioprocess for Sustainable Environment and Energy (ICBSEE)-2022, 20-24 June, 2022 on the paper entitled “Bioleaching of petroleum refinery spent catalyst for base metal recovery: Our Journey from waste to wealth” Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, India 2. FP6 European Union Fellowship from BioMine Project to pursue Lic. Tech., Process metallurgy at Luleå University of Technology, Luleå, Sweden. 3. Kempestiftelsen Scholarship award for One Year for partial fulfilment of Doktorand at Process metallurgy at Luleå University of Technology, Luleå, Sweden. 4. Special Incentive 10,000 SEK from Luleå University of Technology, Luleå, Sweden, for completing Ph.D. Tech within minimum period of 4 years. 5. FP7 Marie curie-Co-Funded Brain Circulation Scheme fellowship (TUBITAK) for 4 months to work in Suleyman Demirel University, Isparta Turkey Project. 6. Best Oral Presentation Award among all the presentation delivered on various technical sessions of 3rd Rajasthan Science Congress held between February 28th –March 2nd, 2015 at Manipal University, Jaipur, Rajasthan, India 7. Best Student Award from Bhubaneswar Chapter of Indian science Congress Association ISCA 2004.
Publications
1 Bioleaching of zinc sulfide concentrate in redox controlled fed-batch process compared to redox non-controlled batch process N. Nagar, H. Garg, M. Dhaka, C. S. Gahan* Journal of Sustainable Metallurgy, Springer (IF: 3.068) ISSN: 2199-3831 Vol. 8 January 2022, 333-342 2 A study on the biosorption kinetics of Cu (II) and Zn (II) ions from aqueous phase (sulphate medium) using waste sawdust generated from Acacia nilotica wood carpentry S. Aachhera, S. Tiwari, S. Singh, N. Nagar, H. Garg, C. S. Gahan* Ecotoxicology, Springer (IF: 2.935) ISSN: 1573-3017 Vol. 31 Issue 4 May 2022 615-625 3 Comparative biosorption kinetics study of Ni and Zn metal ions from the aqueous phase in sulphate medium by the wooden biomass of Dalbergia sissoo S. Tiwari, S. Aachhera, H. Garg, M. Rojra, N. Nagar*, C.S. Gahan* Environmental Quality Management, Wiley (IF: 1.09) ISSN: 1088-1913 Volume 31, Issue 4, June 2022 63-73 4 Characterization of different types of petroleum refinery spent catalyst followed by microbial mediated leaching of metal values N. Nagar, H. Garg, C.S. Gahan* Chemical Reports, SyncSci Publishing Pte Ltd. Singapore ISSN: 2591-7943 Vol. 3 (1), 2021 177-187 5 Effect of pulp density on the bioleaching of metals from petroleum refinery spent catalyst N. Nagar, H. Garg, N. Sharma, S. A. Awe,C.S. Gahan* 3 Biotech , Springer (IF: 2.893) ISSN: 2190-572X Vol. 11, Issue 3, Article 143 (2021) 1-11 6 Bioleaching of waste mobile phone printed circuit board in controlled redox potential compared to non-controlled redox potential H. Garg, N. Nagar, M. N. Ansari, G. Ellamparuthy, S. I. Angadi, A. Akcil, C. S. Gahan* International Journal of Environmental Science and Technology, Springer (IF: 3.519) ISSN: 1735-1472 Volume 17 Issue 6, June 2020, 3165-3176 7 Integrated bio-pyro-hydro-metallurgical approach to recover metal values from petroleum refinery spent catalyst. N. Nagar, H. Garg, C.S. Gahan* Biocatalysis and Agricultural Biotechnology, Elsevier (IF: 3.281) ISSN: 1878-8181 Vol. 20, July 2019, 101252 8 Bench scale microbial catalysed leaching of mobile phone PCBs with an increasing pulp density H. Garg, N. Nagar, G. Ellamparuthy, S. I. Angadi, C.S. Gahan* Heliyon, Cell Press, (IF: 3.776) ISSN: 2405-8440 Volume 5, Issue 12, December 2019, e02883, 1-11 9 Effect of Increasing Concentrations of Chloride, Nitrate and Sulphate Anions with Their Counter Cations of Potassium, Sodium and Ammonium on Sulphur Bio-Oxidation by Sulphur Oxidizing Microorganism H. Garg, N.Nagar, P. Sharma, J. Kanwar, S. Zaki, C.S. Gahan* Archives of Petroleum & Environmental Biotechnology, Gavin Publishers (IF: 1.45) ISSN: 2574-7614 (2019), 6(1) 147 10 Influence of grinding time on the bioleaching of copper from copper slag. N. Nagar, H. Garg, S.I. Angadi, C.S. Gahan* Bioscience Biotechnology Research Communication, ISSN: 0974-6455 , (2019), 12 (2) , 512-522 11 Efficiency Assessment of Pure Fe Oxidizing Microorganisms in Iron Supplemented and Non-Supplemented Medium and Pure S Oxidizing Microorganisms for Bioleaching of Mobile Phone Printed Circuit Boards. H. Garg, N. Nagar, A. Dash, C.S. Gahan* Bioscience Biotechnology Research Communication ISSN: 0974-6455 (2019), 12(2) , 425-434 12 Comparative batch and fed-batch bioleaching of zinc from zinc sulphide concentrate using mixed culture of iron and sulphur oxidizing microorganisms H. Garg, N. Nagar, S. Behera, C.S. Gahan* “NPI” International Research Journal of Industrial and Environmental Biotechnology (IRJIEB) ISSN: 2581-7906 (2019), 2(1) 177-221 13 A Potential Alternative for Precious Metal Recovery from E-waste: Iodine Leaching. M. Sahin, A. Akcil, C. Erust, S. Altynbek, C. S. Gahan, A. Tuncuk Separation Science and Technology, Taylor & Francis (IF: 2.799) ISSN: 0149-6395 50 (1) & 2015, 2587–2595 14 Precious Metal Recovery from Waste Printed Circuit Boards using Cyanide and Non-Cyanide Lixiviants - A Review. A. Akcil, C. Erust, C. S. Gahan, M. Ozgun, M. Sahin, A. Tuncuk Waste Management, Elsevier (IF: 8.1) ISSN: 0956-053X, 45 (1) & 2015, 258–271 15 Studies on the effect of coal particle size on biodepyritization of high sulfur coal in batch bioreactor. S. Singh, H. Srichandan, A. Pathak, C. S. Gahan, S. Lee, D. J. Kim, B. G. Kim Polish Journal of Chemical Technology, De Gruyter Open (IF: 1.115) ISSN: 1509-8117, 17 (1) & 2015, 97-102 16 Biohydrometallurgy of Secondary Metal Resources: A Potential Alternative Approach for Metal Recovery. C. Erust, A. Akcil, C.S. Gahan, A. Tuncuk, H. Deveci, Journal of Chemical Technology and Biotechnology, Wiley (IF: 3.4) ISSN: 0268-2575, 88 (12) & 2013, 2115-2132 . 17 Evaluation of Oxidic By-Products as Neutralizing agents in Biooxidation of a Refractory Gold concentrate and their influence on Gold Extraction through Cyanidation. C.S. Gahan*, J.E. Sundkvist, F. Engström, Å. Sandström Research Journal of Recent Sciences ISSN: 2277-2502, 2(10) & 2013, 41-47. 18 Quantifying microorganisms during biooxidation of arsenite and bioleaching of zinc sulfide, I.J.T. Dinkla, P. Gonzalez-Contreras, C.S. Gahan, J. Weijma, C.J.N. Buisman, M.J.C. Henssen, Å. Sandström Minerals Engineering, Elsevier (IF: 5.479) ISSN: 0892-6875, 48 & 2013, 25-30 19 Bench-scale batch bioleaching of spent petroleum catalyst using mesophilic iron and sulphur oxidizing acidophiles H. Srichandan, D.J. Kim, C.S. Gahan*, S. Singh, S.W. Lee Korean Journal of Chemical Engineering, Springer (IF: 3.146) ISSN: 0256-1115, 30(5) & 2013, 1076-1082. 20 Microbial depyritization of three different coals by Acidithiobacillus ferrooxidans in a batch stirred tank reactor. D. J. Kim, C. S. Gahan*, S.Y. Choi, B. G. Kim Canadian Metallurgical Quarterly, Taylor and Francis (IF: 1.037) ISSN: 0008-4433 52 (2) & 2013, 146-152 21 Microbial Desulfurization of Three Different Coals from Indonesia, China and Korea in Varying Growth Medium D. J. Kim, C.S. Gahan*, C. Akilan, S.Y. Choi, B.G. Kim Korean Journal of Chemical Engineering, Springer (IF: 3.146) ISSN: 0256-1115, 30(3) & 2013, 680-687 22 Studies on the effect of coal particle size on biodepyritization of high sulfur coal in batch bioreactor D.J. Kim, S. Singh, Y.E. Jeong, C.S. Gahan*, B.G. Kim World Academy of Science, Engineering and Technology, ISSN: 2010-376X, 77 & 2012 1815-1820. 23 Bioleaching of Valuable Metals from Petroleum Spent Catalyst using Acidophilic Chemolithotrophs: A comparative study H. Srichandan, S. Singh, D.J. Kim, C.S. Gahan*, S.W. Lee World Academy of Science Engineering and Technology ISSN: 2010-376X, 77 & 2012 1809-1814 24 Biohydrometallurgy and Biomineral Processing Technology: A Review on Past Present and Future C. S. Gahan*, D. J. Kim, H. Srichandan, A. Akcil Research Journal of Recent Sciences, ISSN: 2277-2502, 1(10) & 2012, 85-99. 25 Thermophilic bioleaching of spent petroleum refinery catalyst using Sulfolobus metallicus D.J. Kim, H. Srichandan, C.S. Gahan*, S.W. Lee Canadian Metallurgical Quarterly, Taylor and Francis (IF: 1.037) ISSN: 0008-4433 51(4) & 2012, 403-412 26 Bioleaching of Spent Catalyst using Moderate Thermophiles with Different Pulp Densities and Varying size Fractions without Fe Supplemented Growth Medium H. Srichandan, C.S. Gahan*, D.J. Kim, S.W. Lee International Journal of Chemical and Environmental Engineering, ISSN: 2078-0737, 6 & 2012 22-28. 27 Comparison of Bioleaching Kinetics of Spent Catalyst by Adapted and Unadapted Iron Oxidizing Bacteria - Effect of Pulp Density; Particle Size; Temperature D. Pradhan, D.J. Kim, J. G. Ahn, C.S. Gahan, H.S. Chung, S.W. Lee Korean Journal of Metals and Materials (IF: 1.324) ISSN: 1738-8228 49(12) & 2011, 956-966 28 Utilisation of steel slags as neutralising agents in biooxidation of a refractory gold concentrate and their influence on the subsequent cyanidation C.S. Gahan, J.E. Sundkvist, F. Engström, Å. Sandström Resources, Conservation and Recycling, Elsevier (IF: 13.2) ISSN: 0921-3449, 55(5) & 2011, 541-547 29 Use of mesalime and electric arc furnace (EAF) dust as neutralising agents in biooxidation and their effects on gold recovery in subsequent cyanidation C.S. Gahan, J.E. Sundkvist, Å. Sandström Minerals Engineering, Elsevier (IF: 5.479) ISSN: 0892-6875, 23(9) & 2010, 731-738 30 Effect of the chloride ions on ferrous-iron oxidation by Leptospirillum ferriphilum-dominated chemostat culture C.S. Gahan, J.E. Sundkvist, M. Dopson, Å. Sandström Biotechnology and Bioengineering, Wiley, IF: 3.8) ISSN: 0006-3592, 106(3) & 2010 422-431 31 A study on the toxic effects of chloride on the biooxidation efficiency of pyrite C.S. Gahan, J.E. Sundkvist, Å. Sandström Journal of Hazardous Materials, Elsevier (IF: 14.224) ISSN: 0304-3894 172(2-3) & 2009, 1273-1281 32 Comparative study on different steel slags as neutralising agent in bioleaching C.S. Gahan, M.L. Cunha, Å. Sandström Hydrometallurgy, Elsevier (IF: 4.7) ISSN: 0304-386X, 95(3-4) & 2009, 190-197 33 Study on the Possibilities to use Ashes, EAF Dust and Lime Sludge as Neutralising Agent in Bioleaching C.S. Gahan, M.L. Cunha, Å. Sandström The Open Mineral Processing Journal, Bentham Science, ISSN: 1874-8414, 1 (1) & 2008, 26-36 34 Leaching behaviour of industrial oxidic by-products: possibilities to use as neutralisation agent in bioleaching M.L. Cunha, C.S. Gahan, N. Menad, Å. Sandström Materials Science Forum, Scientific .net (IF: 0.48) ISSN: 0255-5476, 587-588 & 2008, 748-752 35 Modeling of Ferrous Iron Oxidation by Leptospirillum ferrooxidans-Dominated Chemostat Culture J.E. Sundkvist, C.S. Gahan, Å. Sandström Biotechnology and Bioengineering, Wiley (IF: 3.8) ISSN: 0006-3592, 99(2) & 2008, 378-389 36 Possibilities to use oxidic by-products for precipitation of Fe/As from leaching solutions for subsequent base metal recovery M.L. Cunha, C.S. Gahan, N. Menad, Å. Sandström Minerals Engineering, Elsevier (IF: 5.479) ISSN: 0892-6875 21(1) & 2008, 38-47 37 Beneficiation of iron ore slime using Aspergillus niger and Bacillus circulans N. Pradhan, B. Das, C.S. Gahan, R.N. Kar, L.B. Sukla Bioresource Technology, Elsevier (IF: 11.4) ISSN: 0960-8524, 97(15) & 2006, 1876-1879 38 Biosorption of copper by Aspergillus flavus C.S. Gahan, R. Kumari, N. Pradhan, S.K. Samal, R.N. Kar, L.B. Sukla Transactions of the Indian Institute of Metals, Springer (IF: 1.391) ISSN: 0972-2815, 58(5) & 2005 39 Bacterial Diversity present in Uranium mines of Jharkhand S.K. Samal, A. Mishra, C.S. Gahan, N. Pradhan, R.N. Kar, L.B. Sukla,, V.M. Pandey Transactions of the Indian Institute of Metals Springer (IF: 1.391) ISSN: 0972-2815, 58(5) & 2005