1.    Thengane, S.K., Hoadley, A., Bhattacharya, S., Mitra, S., Bandyopadhyay, S. (2014). Cost-benefit analysis of different hydrogen production technologies using AHP and Fuzzy AHP. International Journal of Hydrogen Energy, 39, 15293-15306

2.    Thengane, S.K., Hoadley, A., Bhattacharya, S., Mitra, S., Bandyopadhyay, S. (2016). Exergy efficiency improvement in hydrogen production process by recovery of chemical versus thermal energy. Clean Technologies and Environmental Policy, 18 (5)

3.    Thengane, S.K., Hoadley, A., Bhattacharya, S., Mitra, S., Bandyopadhyay, S. (2016). An alternative process for nitric oxide and hydrogen production using metal oxides. Chemical Engineering Research and Design, 112, 36-45

4.  Thengane, S.K., Hoadley, A., Bhattacharya, S., Mitra, S., Bandyopadhyay, S. (2017). Thermodynamic evaluation of chemical looping based nitric oxide and hydrogen production. Chemical Engineering Research and Design, 132, 252-275

5.    Siddiqui, H., Thengane, S.K., Sharma, S., Mahajani, S.M. (2018). Revamping downdraft gasifier to minimize clinker formation for high-ash garden waste as feedstock. Bioresource Technology 266, 220-231 (Equal authorship as first author)

6.    Gupta, A., Thengane, S.K., Mahajani, S.M. (2018). CO₂ gasification of char from lignocellulosic garden waste: Experimental and kinetic study. Bioresource Technology, 263, 180-191

7.    Thengane, S.K. (2018). Assessment of different technologies for managing yard waste using analytic hierarchy process. Process Integ. and Opti. for Sustainability, 3(2), 255-272

8.    Thengane, S.K., Tan, R.R., Foo, D.C.Y., Bandyopadhyay, S. (2019). A pinch-based approach for targeting of carbon capture, utilization, and storage (CCUS) systems. Industrial & Engineering Chemistry Research 58 (8), 3188-3198

9.    Thengane, S.K., Gupta, A., Mahajani, S.M. (2019). Co-gasification of high ash biomass and high ash coal in downdraft gasifier. Bioresource Technology, 273, 159-168

10.  Kung, K., Thengane, S.K., Shanbhogue, S., Ghoniem, A. (2019). Parametric analysis of torrefaction reactor operating under oxygen-lean conditions. Energy, 181, 603-614

11.  Gupta, A., Thengane, S.K., Mahajani, S.M. (2020). Kinetics of pyrolysis and gasification of cotton stalk in the Central parts of India. Fuel, 263, 116752

12.  Thengane, S.K., Bandyopadhyay, S. (2020). Biochar Mines: Panacea to Climate Change and Energy Crisis? Clean Technologies and Environmental Policy, 22, 5-10

13.  Barr, M., Kung, K., Thengane, S.K., Sweeney, D., Ghoniem, A. (2020). Characterization of aggregate behaviors of torrefied biomass as a function of reaction severity. Fuel, 266, 117152

14.  Kung, K., Thengane, S.K., Ghoniem, A. (2020). Functional mapping of torrefied product characteristics with index of torrefaction. Fuel Processing Technology, 202, 106362

15.  Kung, K., Thengane, S.K., Lim, C.J., Sokhansanj, S., Ghoniem, A. (2020). Thermal loss analysis and improvements for biomass conversion reactors. Energy Conversion and Management, 218, 11292415.

16.  Thengane, S.K., Burek, J., Kung, K., Ghoniem, A., Sanchez, D.L. (2020). Life cycle assessment of rice husk torrefaction and prospects for decentralized facilities at rice mills. Journal of Cleaner Production, 275, 123177.

17.  Thengane, S.K., Kung, K., York, R., Lim, C.J., Sokhansanj, S., Sanchez, D.L. (2020). Techno- economic and emission evaluation of mobile in-woods biochar production. Energy Conversion and Management 223, 113305

18.  Ma, W., Ma, C., Liu, X., Gu, T., Thengane, S.K., Bourtsalas, A., Chen, G. (2020). NO_x formation in fixed-bed biomass combustion: Chemistry and Modeling. Fuel 290, 119694

19.  Thengane, S.K., Kung, K., Gupta, A., Ateia, M., Sanchez, D. L., Mahajani, S., Lim, C.J., Sokhansanj, S., Ghoniem, A. (2020). Oxidative torrefaction for cleaner utilization of biomass for soil amendment. Cleaner Engineering and Technology 1, 100033

20.  Kung, K., Thengane, S.K., Lim, C.J., Sokhansanj, S., Ghoniem, A. (2021). Bulk permeability characteristics in a biomass moving bed and their effects on scaling. Chemical Engineering Journal 420, 1, 129979

21.  Thengane, S.K., Kung, K., Hunt, J., Gilani, H., Lim, C.J., Sokhansanj, S., Sanchez, D. (2021) Market prospects for biochar production and application in California. Biofuels, Bioproducts & Biorefining, 15:1802–1819

22.  Thengane, S.K., Kung, K., Gomez-Barea, A., Ghoniem, A. (2022) Advances in biomass torrefaction: process parameters, kinetics, reactor designs, applications, and market prospects. Progress in Energy and Combustion Science, 93, 101040

23.  Kung, K., Thengane, S.K., Ghoniem, A., Lim, C.J., Cao, Y., Sokhansanj, S. (2022) Start-up, shutdown, and transition timescale analysis in biomass reactor operations. Energy, 123448

24.  Sharan, P., Thengane, S.K., Yoon, T.J., Lewis, J.C., Singh, R., Currier, R.P., Findikoglu, A.T. (2022) A novel approach for produced water treatment: Supercritical water oxidation and desalination. Desalination, 532, 115716

25.  Halba, A., Thengane, S.K., Arora, P. (2023) A critical outlook on lignocellulosic biomass and plastics co-gasification: A mini-review. Energy & Fuels, 37, 19-35

26.  Watts, J., Potter, A., Mohan, V., Kumari, P., Thengane, S.K., Sokhansanj, S., Cao, Y., Kung, K. (2023) Proxy quality control of biomass particles using thermogravimetric analysis and gaussian process regression models. Biofuels, Bioproducts & Biorefining

27.  Lachos-Perez, D. Vieira, JCM., Missau, J., Anshu, K., Siakpebru, O.K., Thengane, S.K., Morais, A.R.C., Tanabe, E.H., Bertuol, D.A. (2023) Review on biomass pyrolysis with focus on bio-oil upgrading techniques. Analytica

28.  Anshu, K., Lee, J.S., Mohan, V., Kung, K.S. Sokhansanj, S., Cao, Y., Thengane, S.K. (2023) Torrefaction severity influence on the nutrient composition of biomass. Biomass Conversion and Biorefinery, 14 (20)

29.  Garkoti, P., Thengane, S.K. (2024) Feasibility analysis of circular economy-based biogas plants for Indian cattle shelters. Biomass and Bioenergy, 186, 107259

30.  Garkoti, P., Ni, J., Thengane, S.K. (2024) Energy management for maintaining anaerobic digestion temperature in biogas plants. Renewable and Sustainable Energy Reviews, 199, 114430

31.  Anshu, K., Thengane, S.K. (2024) Kinetic and thermodynamic analysis of co-pyrolysis of rice straw and polystyrene. Biomass Conversion and Biorefinery, 1-25

32.  Anshu, K., Kentamma, H., Thengane, S.K. (2024) A comprehensive review on co-pyrolysis of lignocellulosic biomass and polystyrene. Renewable and Sustainable Energy Reviews, 205, 114832

33.  Rehman, A., Thengane, S.K. (2025) Prospects of torrefied biomass as soil amendment for sustainable agriculture. Clean Technologies & Environmental Policy, 27, 531–547

34.  Rehman, A., Thengane, S.K. (2025) Rice straw valorization through torrefaction to improve soil health and crop growth. Industrial Crops and Products, 226, 120762

35.  Garkoti, P., Thengane, S.K. (2025) Techno-economic and life cycle assessment of circular economy-based biogas plants for managing organic waste. Journal of Cleaner Production, 504, 145412

36.  Kumar, S. Thengane, S.K., Singh, R. (2025) System dynamics based qualitative framework for solar PV recycling. Energy for Sustainable Development 101806

37.  Naaz, I., Thengane, S.K., Arora, P., Thirumoorthy, G., Singal, S.K. (2025) Waste-to-energy pathways for fresh and legacy waste management: A case study in India. Energy Nexus, 19, 100472

38.  Garkoti, P., Thengane, S.K. (2025) Identifying and overcoming barriers to large-scale biogas dissemination in India through stakeholder-led SWOT analysis. Sustainable Energy Technologies and Assessments, 83, 104610

39.  Rai, P., Thengane, S.K. (2025) Novel Red Mud–Bagasse Biochar for Enhanced Selenite Adsorption: Synthesis, Characterization, and Mechanistic Insights. Journal of Water Process Engineering, 79, 108821

40.  Rana, R., Thengane, S.K. (2025) Synthesis, characterization, and application of waste-derived biochar for nutrient recovery from agricultural runoff. Bioresource Technology Reports, 32, 102297

41.  Anshu, K., Sharma, T., Nguyen, T.V., Ji, F.E., Little, A.M., Thengane, S.K. (2026) Mechanisms of fast pyrolysis reactions of polystyrene explored using a pyroprobe integrated with an ion trap mass spectrometer. Energy and Fuels (accepted)

42.  Thengane, S.K., Rai, P. (2026) Biochar in the Net-Zero Transition: Opportunities and Challenges. Biochar (under review)

43.  Rehman, A., Kung, K., Lau, A., Thengane, S.K. (2026) A multi-criteria assessment of crop residue biomass utilization strategies from farmers' perspective. Bioresource Technology Reports (under review)

44.  Singh, R., Rehman, A., Thengane, S.K. (2026) Effects of oxidative torrefaction on the fuel properties, grindability, and pelletization of rice straw. Renewable Energy (accepted)

PATENTS

1.    Singal, S. K., Thengane, S. K., Ali, I., Goel, V. “A low-cost hemp decorticator machine for separating bast fibers and hurds from hemp stalks”, App. No. 202611003449, Indian Patent Office, Jan 2026 (Filed)

2.    Singal, S. K., Mishra, M., Thengane, S. K., Ali, I., Goel, V. A system and a method for managing power distribution, App. No. 202511081270, Indian Patent Office, Aug 2025 (Filed)

3.    Thengane, S.K., Rehman, A. “System and method for continuous oxidative torrefaction of biomass”, App. No. 202411027656, Indian Patent Office, March 2024 (Filed)

4.    Thengane, S.K., Rehman, A., Rai, P., Kumari, S. “A low-cost torrefied municipal solid waste (MSW) with enhanced fuel properties”, App. No. 202511054481, Indian Patent Office, June 2025 (Filed)

5.    Singal, S. K., Thengane, S. K., Ali, I., Goel, V. “A small scale low-cost multi-millet de-husking machine”, App. No. 202511054910, Indian Patent Office, June 2025 (Filed)

6.    Undre, V.S., Mohale, V.P., Alam, P., Thengane, S.K., Chelliah, T. R. "A smart solid-state relay limiting the inrush current", App. No. 202411005973, Indian Patent Office, Jan 2024, Patent no. 582240 (Granted)

7.    Singal, S. K., Mishra, M., Thengane, S. K. "A low-cost air-cooled cabinet for vegetable vending carts"; App. No. 202411064064, Indian Patent Office, Aug 2024 (Filed)

8.    Mahajani, S., Gadkari, P., Sharma, S., Thengane, S. K. “A fixed-bed downdraft gasifier for gasification of solid feedstock”, Patent No. 351164; Application No. 201721043223, Indian Patent Office, IIT Bombay, 2017 (Granted)

9.    Provisional Patent Number 2014900341, Australian Patent Office, titled “Production Process for Ammonium Nitrate”, filed on 5 February 2014 by Orica Mining Services, Newcastle, Australia, 2014

TECHNOLOGY TRANSFER

1.    Oxidative biomass torrefaction technology transferred to Jagatjit Agri India Private Limited in 2025 and Soham Carbon Innovators Pvt. Ltd in 2026.

2.    Started “Soham Carbon Innovators Pvt. Ltd.” at Roorkee under Faculty Entrepreneurship Policy in 2025.

RESEARCH PROJECTS

Projects under implementation

Projects completed after PhD (2016-2024)

*Postdoc; written the proposal for funding under the supervision of a faculty as PI of the project.

CONSULTANCY PROJECTS

1.       Environmental Nanotechnology, National Conference on Green and Sustainable Chemistry 2010, BITS Pilani

2.       Simulation and sensitivity analysis of an auto thermal ammonia synthesis reactor, Chemcon 2010, Annamalai University, Chidambaram

3.       Exploration of the potential of Nanotechnology to tackle climate change, International Conference on Climate Change 2010, Institute of Technology and Management, Gwalior

4.       Mathematical modeling and simulation of a continuous stirred tank bioreactor, Global Tech Symposium, International Conference on Advances in Energy Research 2011, IIT Bombay

5.       Nanotechnology for climate change, National Conference on Energy and Sustainable Development 2012, College of Engineering Pune, India

6.       Techno-economic evaluation of water splitting technologies to produce H₂ for NH₃ production, All-Energy Australia Exhibition & Conference, Melbourne, October 2012

7.       A new alternative process for nitric acid production based on chemical looping approach, AIChE Annual Meeting 2014, November 2014, Atlanta, USA

8.       Technologies for achieving zero waste to landfill; A Joint U.S.-India Conference on Waste Management Innovation organized by Ohio State University, April 2017, Mumbai

9.       Co-gasification of high ash coal and high ash biomass in downdraft gasifier, 5th International Conference on Recycling and Waste Management, March 2018, London, UK

10.   Utilizing bioenergy for production of energy and mitigation of climate change, 2019 AIChE Annual Meeting, Orlando, USA

11.   Biochar-based fertilizers for improving soil quality and crop yield, Mechanical Engineering Research Exhibition (MERE) and MIT Energy Night, October 2019, MIT, Cambridge, USA

12.   Decentralized biomass torrefaction for rural fertilizer production, IdeaStream, April 2019, Hyatt Regency, Cambridge, USA

13.   A life cycle assessment of biomass torrefaction in inert and partially oxidative conditions. Applied Energy “A+B” Symposium, August 2020, MIT, Cambridge, USA

14.   Effective start-up and shutdown strategies for continuously operated biomass torrefaction    reactor, Applied Energy “A+B” Symposium, May 2019, MIT, Cambridge, USA

15.   Thengane, S.K. Overview and prospects of thermochemical biomass conversion processes in India; 3rd International Conference on Recent Advances in Bio-Energy Research, March 2022, SSSNIB, India

16.   Thengane, S.K., Gupta, A., Mahajani, S. Catalytic and inhibiting effects of ash constituents in biomass gasification, YOURHETCAT 2022, July 2022 Szeged, Hungary

17.   Manure Management and Utilization Technologies – Anaerobic Digestion, Purdue Extension, Nov 2022, Fair Oaks, IN, USA

18.   Rehman, A., Shahzaib, M., & Thengane, S. K., Oxidative torrefaction of paddy straw in continuous reactor. International Conference on Hydro & Renewable Energy: Net Zero Carbon Energy Systems, Oct 2022, IIT Roorkee, India

19.   Rai, P., Thengane S.K. Bagasse-Based Biochar Adsorbent for Selenium removal from contaminated groundwater. 3rd International conference on River Health: Assessment to Restoration, Oct 2023, IIT BHU, India

20.   Singh, R., Thengane, S.K. Oxidative torrefaction and densification of paddy straw. International Conference on ‘Technologies and Innovations for Sustainable Development, Oct 2023, MNNIT Allahabad, India

21.   Reema., Thengane, S.K., Biochar selection for agricultural runoff treatment: impact of biochar source and processing conditions. 8th International R&D Conference on Global Trend in Water Resources, Power & RE Sector, Feb 2024, IIT Roorkee, India

22.   Garkoti, P., Thengane, S.K., Life Cycle Assessment of circular economy-based biogas plants. 5th Brazilian Bioenergy Science and Technology Conference, Oct 2024, Brazil

23.   Anshu, K., Sharma, T., Nguyen, T., Little, A., Thengane, S.K., Kenttamma, H., Investigation of fast co-pyrolysis of lignocellulosic biomass and polystyrene by using a pyroprobe integrated with an ion trap mass spectrometer, ACS Fall Aug 2024 - Denver, Colorado, USA

24.   Anshu, K., Sharma, T., Nguyen, T., Little, A., Roller, E., Thengane, S.K., Kenttamma, H., Identification of fast pyrolysis primary products of rice straw by using a pyroprobe integrated with an ion trap tandem mass spectrometer, PyroAsia 2024, IIT Guwahati, India

25.   Sharma, T., Anshu, K., Nguyen, T., Little, A., Thengane, S.K., Kenttamma, H., Reaction mechanisms for fast pyrolysis of polystyrene by using a pyroprobe integrated with an ion trap mass spectrometer. ASMS 2025, Baltimore, USA

26.   Thengane, S. K., Cilamkoti, V., Kumari, S., Rice straw pyrolysis for enhanced hydrogen production using Zn-Ni-Fe catalyst. Power-to-X for a Sustainable Future Workshop 2025, Bangkok, Thailand

27.   Thengane, S. K. Waste to Energy in India's Circular Economy: Prospects and Challenges. International Conference on Waste Management, Recycling and Environment, Sept 2025, Male, Maldives

28.   Rai, P., Thengane, S. K. Investigation of hydrogen production from hydrolysis of waste aluminium scrap, foil, and dross. International Symposium on Biomass to Hydrogen: Technologies, Policies, and System Integration 2025, Roorkee, India

SELECTED INVITED TALKS AND SEMINARS

1.         Keynote talk on "Role of Biomass in Green Hydrogen and Decarbonization" at the National Conference on “Green Hydrogen and Industrial Decarbonization: Building India’s End-to-End Ecosystem for Energy Transition” IIT Delhi. Feb 10, 2026

2.         Invited talk on “Promise of Waste to Hydrogen” at AICTE–ATAL FDP on “Hydrogen 360°: Unlocking the Potential of Sustainable Power” AIT Pune. Nov 21, 2025

3.         Invited talk on “Biochar Market, Credits, and Projects” at the 5th International Conference on Recent Advances in Bio-Energy Research (ICRABR 2025), at SSS-NIBE Punjab. Oct 7, 2025

4.         Invited Speaker and Panelist for the special session on “Green Hydrogen – How Soon and How Much can be?” at the International Conference on Bioenergy and Technologies during IBET Expo 2025. Yashobhoomi, Delhi. Sept 25, 2025

5.         Invited talk on “Advances in biomass torrefaction”, Accelerating Biomass Co-firing (ABC) National Biomass Conference under the SAMARTH Mission, Delhi. June 10, 2025

6.         Keynote Speaker at National Symposium on “Decoding Net Zero: Assessing Industrial Needs, ESG, and Green Credit Innovations (NZ-ESG 2025),” IIC Delhi.  May 30–31, 2025

7.         Expert talk on “Biomass Power: Operation and Regulatory Aspects” at NHPC Course, IIT Roorkee on “Regulatory framework and operation of RE generation resources” Jan. 14-17, 2025

8.         Expert talks on “Energy transition in Hard-to-abate sectors” at NHPC Course, IIT Roorkee on “Renewable energy transition including role of hydropower in India's transition to net-zero carbon energy systems” Nov. 05-08, 2024

9.         Plenary talk on “Energy transition towards the end of fossil fuels era” at International Summit on Renewable Energy (INSORE) 2024 Phase 3 held in Kuala Lumpur, Malaysia from 19-21 Sept 2024

10.     Invited talk on “Biomass and Bioenergy” at workshop on Strategic Plan for Research Activities @ Centre of Excellence in Sustainability Engineering and Carbon Neutrality - 12-13 September 2024 at APJ AKTU, Kerala

11.     Expert lecture on “Thermochemical conversion routes for biomass” at the course “Recent Trends in energy and Environmental applications” from the 19-23 Aug. 2024, NIT Hamirpur

12.     Invited talk on “Waste to Energy - Overview in Indian context” at “Emerging Development, Challenges, and Opportunities ahead in Indian Power Sector for Visksit Bharat @ 2047” workshop from 21-23 February, 2024 at PEC Chandigarh

13.   Workshop on "Decarbonization in the Hard-to-abate Industry Sectors" on 19th February 2024 (Monday) at IIT Bombay

14.     Sustainability and Waste Management; at the event organized by National Service Scheme (NSS) IIT Roorkee in collaboration with the IPR cell and Institute Innovation Council, 2023.

15.     Overview and prospects of thermochemical biomass conversion processes in India; 3rd International Conference on Recent Advances in Bio-Energy Research (ICRABR-2022), SSS-NIBE, India, March 2022.

16.   Overview of crop residue issue in North India; Biomass and Bioenergy Research Group (BBRG); The University of British Columbia, Vancouver, Canada, May 2021

17.   Techno-economic analysis of (bio)energy systems; TEQIP III FDP, Renewable Energy & Sustainable Development, NIT Uttarakhand, March 2021

18.   Technologies for residual biomass – Lab to market; TEQIP III Faculty Development Programme (FDP), IIT Roorkee, Dec 2020

19.   Techno-economic analysis of bioenergy systems; TEQIP III FDP, IIT Roorkee, Dec 2020

20.   Techno-economic analysis of energy systems; ATAL FDP, IIT Roorkee, Oct 2020

21.   Decentralized biomass torrefaction system for soil amendment application; RGD Seminar, MIT, USA, July 2020

22.   Integrated solid waste management- Idea to Demonstration; TEQIP III KIT Summer Training Program for Senior Faculty, IIT Bombay, June 2018

23.   What to do with biomass waste in India? Waste Alliance Lecture Series, MIT, USA, Oct 2017

24.   Stakeholder analysis for gasification case study; TCTD, IIT Bombay, August 2017

25.   Webinar on Waste to Energy: Opportunities for U.S. Businesses in India; June 2017

26.   Solid Waste Management at IIT Bombay Campus; Waste Alliance, MIT, USA, April 2017

27.   Garden waste gasification for community cooking; CEPR-RGD Seminar, MIT, March 2017

EXTRACURRICULAR

1.    Champion for MOU of IIT Roorkee with a) University of Lorraine, France, b) Organic Recycling Systems Ltd., Mumbai, c) BITS Pilani

2.    Silver Medal in Lawn Tennis and Bronze Medal in Chess at 29th Inter IIT Staff Sports Meet-2024 at IIT Kanpur

3.     Bronze Medal in Lawn Tennis at 28th Inter IIT Staff Sports Meet-2023 at IIT Gandhinagar

4.     Mentor for Green Charcoal Hackathon 2021 organized by Incubate India in collaboration with NTPC

5.     Represented MIT and Takachar at ASME I-SHOW, Washington DC, June 2019

6.       Completed MIT Innovation Corps program for technology commercial potential Jan-June 2019

7.       Organized TCTD first annual symposium Jan 2017; Organized and mentored multiple field visits and MIT visit for the Tata Fellows of IIT Bombay from 2016 to 2018

8.       Masters’ Thesis at National Environmental Engg. Research Institute, Nagpur (Jan-June 2011)

9.       Training at Environmental Impact and Risk Assessment Division of NEERI, Nagpur (May 2010)

10.   Training on Water and Pyrometric Analysis at Quality Control Lab, OF Chanda (June 2010)

11.   Training Project at National Chemical Laboratory (NCL), Pune (May-June 2008)

12.   Received Academic Excellence Award, NCGTA 2009, N.S. Science and Arts College, India