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Faculty details

Prof.Ritesh Prakash

Designation: Assistant Professor

Department: Fuel, Minerals and Metallurgical Engineering

Email: ritesh[at]iitism[dot]ac[dot]in

Contact Number:

Office Number: +91-326-223-+91 77070 18652

Personal Page: Click Here

About Me: I am an assistant professor in the Department of Fuel, Minerals and Metallurgical Engineering at the Indian Institute of Technology (Indian School of Mines) Dhanbad. I completed my PhD from IIT Guwahati, along with an M.Tech from IIT Kharagpur and B.Tech from IIT Guwahati. Before joining IIT (ISM), I worked as principal manager at the Hydrogen R&D Centre, Hylium Industries Inc., South Korea, where I was involved in hydrogen generation through methanol steam reforming process, hydrogen liquefaction, cryogenic storage systems, and liquid hydrogen applications for UAVs. I also served as a postdoctoral fellow in the Department of Mechanical Engineering at Sungkyunkwan University, South Korea. My research interests include mineral beneficiation and flotation, multiphase hydrodynamics, nanobubble and bubble science, hydrogen production and storage, cryogenic technologies, process intensification, and safety in hydrogen systems. I have published extensively in leading international journals and am a co-inventor of a Korean patent on nanobubble generation using acoustic cavitation. I am actively involved in teaching, research, and student mentorship. I have contributed as a teaching assistant to several national MOOCs under NPTEL and regularly serve as a reviewer for reputed international journals. I am open to academic and industry collaborations.

Research Interest: Mineral Beneficiation/Flotation, Hydrodynamics, Nanobubble/bubble Science, H₂ Production (MSR), H₂ Storage, safety, Process Intensification, Liquid Hydrogen Technologies/Cryogenics. PhD Opportunity: If you are interested in pursuing impactful research and contributing to next-generation technologies, we would love to hear from you. To apply or inquire, please contact: Email: ritesh@iitism.ac.in

Curriculum
Vitae
Publications

Teaching

  • Modeling of Mineral Processing Systems (NFMC509)
  • Simulation of Mineral Processing Systems Lab (NFMC510)
  • Introduction to Mineral Engineering Lab (NFMC104)

 

Facilities

Computational Tools

  • Ansys's all the modules
  • METSIM (Academic License)
  • MODSIM
  • JKSimMet (receiving soon)

Academics

Ph.D.: Indian Institute of Technology Guwahati

M.Tech: Indian Institute of Technology Kharagpur

B.Tech: Indian Institute of Technology Guwahati

Position

Professional Experience

  1. Principal Manager, Hydrogen R&D Centre, Hylium Industries Inc., South Korea. Research activities: H2 generation (MSR), H2 Liquefaction, Liquid Hydrogen UAV drone analysis, Cryogenics storage, etc.
  2. Postdoctoral fellow, Mechanical Engineering, Sungkyunkwan University, South Korea.

Awards and Honors

  1. Best paper award: Lee, J. Prakash, R., Lee, J. (2022). Characterization of cavitation bulk nanobubbles: Inspired by pistol-shrimp. KSME Bioengineering Division Spring Conference, April 20 – 22, South Korea.
  2. Awarded in the poster presentation at the Research Conclave. 14 – 17 March 2019, IIT Guwahati, India.

Publications

List Of Research Publications (only in Peer-reviewed Journals)

 

  1. Prakash, R., Majumder, S. K., & Singh, A. (2018). Flotation technique: Its mechanisms and design parameters. Chemical Engineering and Processing-Process Intensification, 127, 249-270. https://doi.org/10.1016/j.cep.2018.03.029
  2. Prakash, R., Majumder, S. K., & Singh, A. (2020). Bubble size distribution and specific bubble interfacial area in two–phase microstructured dense bubbling bed. Chemical Engineering Research and Design, 156, 108 -130. https://doi.org/10.1016/j.cherd.2020.01.032
  3. Prakash, R., Hembrom, K. & Majumder, S. K. (2022). Interpretation of induction time and particle recovery in a microstructured counter-current flow column. Chemical Engineering and Processing-Process Intensification, 176, 108931. https://doi.org/10.1016/j.cep.2022.108931
  4. Deb Barma, S., Sathish, R., Rao, D. S., & Prakash, R. (2021). Mechanistic investigation on the microwave-assisted leaching of low-grade coal for low-ash coal production. Separation Science and Technology, 56 (18), 3151-3166. https://doi.org/10.1080/01496395.2021.1878374
  5. Gavrilovic, N., Carbonneau, X., Moschetta, J. M., Prakash, R., Schimpf, J., & Kim, S. Y. (2025). Ground testing and analysis of a liquid-hydrogen propulsion system for UAVs. International Journal of Hydrogen Energy, 187, 151960. https://doi.org/10.1016/j.ijhydene.2025.151960
  6. Lee, J., Prakash, R., Kim, S. H., Lee, H. Y., & Lee, J. (2025). Investigating the Influence of Cationic Surfactants with Varied Alkyl Chain Lengths on Nanobubble Characteristics. Journal of Molecular Liquids, 424, 127061. https://doi.org/10.1016/j.molliq.2025.127061
  7. Pradhan, D., Lee, J., Prakash, R., Chauhan, R., & Lee, J. (2025). Tailored slip length: Investigating the effect of solid-liquid interfacial tension. Physics of Fluids, 37, 022146. https://doi.org/10.1063/5.0256691
  8. Hyeokgyun, M., Prakash, R., Than, M.M., Oh, B., Cho, G., and Lee, J. (2026). Numerical and experimental analysis of thermal design of a drying chamber for roll-to-roll (R2R) printing devices. Flexible and Printed Electronics, 11 (2), 025010. https://doi.org/10.1088/2058-8585/ae666b  
  9. Prakash, R., Lee, J., Kim, S. H., Lee, H. Y., & Lee, J. (2024). Insight into the interaction between ionic nanobubbles and cyanobacteria: Elucidating the role of surfactant and zeta potential in the inactivation of harmful cyanobacteria. Chemical Engineering Science, 287, 119699. https://doi.org/10.1016/j.ces.2023.119699
  10. Prakash, R., Majumder, S. K., Lee, J., Nedeltchev, S. (2024). Quality of Mixedness Using Information Entropy in a Counter-Current Three-Phase Bubble Column. Processes, 12, 281. https://doi.org/10.3390/pr12020281
  11. Prakash, R., Lee, J., Moon, Y., Pradhan, D., Kim, S-H., Lee, H-Y, & Lee, J. (2023) Experimental Investigation of Cavitation Bulk Nanobubbles Characteristics: Effects of pH and Surface-active Agents. Langmuir, 39, 1968- 1986. https://doi.org/10.1021/acs.langmuir.2c03027
  12. Prakash, R., Sangtam, B. T., Hembrom, K., & Majumder, S. K. (2022). Bubble size analysis in a two-phase countercurrent flow in the narrow rectangular column. Physics of Fluids, 34 (4), 043305. https://doi.org/10.1063/5.0083749
  13. Prakash, R., Bhattacharyya, A., & Majumder, S. K. (2022). Experimental investigation and its analysis of gas holdup in a three-phase counter-current microstructured bubble column. Journal of Dispersion Science and Technology, 43 (2), 243-258. https://doi.org/10.1080/01932691.2020.1839480
  14. Fahad, M. K., Prakash, R., Majumder, S. K., & Ghosh, P (2022). Investigation of the Induction Time and Recovery in a Flotation Column: A Kinetic Analysis. Separation Science and Technology ,57 (18), 2937-2954. https://doi.org/10.1080/01496395.2022.2084629
  15. Lee, J., Lee, S., Lee, M., Prakash, R., Kim, H., Cho, G., & Lee, J. (2022). Enhancing Mixing Performance in a Rotating Disk Mixing Chamber: A Quantitative Investigation of the Effect of Euler and Coriolis Forces. Micromachines, 13(8), 1218. https://doi.org/10.3390/mi13081218
  16. Sangtam, B. T., Prakash, R., & Majumder, S. K. (2021). Mixing characteristics of liquid-liquid dispersion in a jet-driven mixing column: Developed for separation of organic pollutants. Industrial & Engineering Chemistry Research, 60 (49), 18166 – 18182. https://doi.org/10.1021/acs.iecr.1c03733
  17. Sangtam, B. T., Prakash, R., & Majumder, S. K. (2021). Drop sizes and its distribution in jet-driven liquid-liquid mixing column: substantial application for the liquid-liquid extraction process. Chemical Engineering Research and Design, 172, 186 – 203. https://doi.org/10.1016/j.cherd.2021.02.029
  18. Fahad, M. K., Prakash, R., Majumder, S. K., & Ghosh, P. (2021). Dispersion characteristics in a gas-liquid–coal slurry flotation column and its analysis by the velocity distribution model, Journal of Dispersion Science and Technology, 42 (9), 1259-1273. https://doi.org/10.1080/01932691.2020.1737105
  19. Prakash, R. & Majumder, S. K. (2020). Effect of particle size and concentration on bubble size distribution and aspect ratio in a counter-current microstructured three-phase bubble column, Journal of Industrial and Engineering Chemistry, 90, 105 - 116. https://doi.org/10.1016/j.jiec.2020.07.002
  20. Prakash, R., Majumder, S. K., & Singh, A. (2020). Bubble-slurry interfacial shear stress and frictional pressure drop in a rectangular column in the presence and absence of a surface-active agent. Powder Technology, 366, 761-775. https://doi.org/10.1016/j.powtec.2020.03.015
  21. Prakash, R., Majumder, S. K., & Singh, A. (2020). Dispersion characteristics in a counter-current microstructured slurry bubble column and its analysis based on the turbulence and circulation. Industrial & Engineering Chemistry Research, 59 (16), 8093-8111. https://doi.org/10.1021/acs.iecr.0c00834
  22. Prakash, R., Majumder, S. K., & Singh, A. (2019). Particle-laden bubble size and its distribution in microstructured bubbling bed in the presence and absence of a surface active agent. Industrial & Engineering Chemistry Research, 58 (8), 3499-3522. https://doi.org/10.1021/acs.iecr.8b05625
  23. Fahad, M. K., Prakash, R., Majumder, S. K., & Ghosh, P. (2019). Gas holdup in the gas-liquid-coal slurry flow in a flotation column in presence of surface active agent. Multiphase Science and Technology, 31 (3), 199 – 214.  10.1615/MultScienTechn.2019029957
  24. Fahad, M. K., Prakash, R., Majumder, S. K., & Ghosh, P. (2019). Frictional pressure drop in a flotation column: an experimental investigation in continuous mode and its prediction by a general model. Multiphase Science and Technology, 31(3), 235 - 254. 10.1615/MultScienTechn.2019031051
  25. Prakash, R., Majumder, S. K., & Singh, A. (2018). Gas holdup and frictional pressure drop contributions in microstructured two-and three-phase bubbling bed with Newtonian and non-Newtonian liquids: Effect of coarse and fine particles with surface active agent. Chemical Engineering and Processing-Process Intensification, 133, 40-57. https://doi.org/10.1016/j.cep.2018.09.020
  26. Prakash, R., & Majumder, S. K. (2017). Analysis of particle recovery in flotation column based on information entropy theory. Transactions of the Indian Institute of Metals, 70(2), 403-410. https://doi.org/10.1007/s12666-016-0994-5

Papers in conference abstract volumes / presented

  1. Prakash, R., Stepien, P.R., Schimpf, J.K., Kim, S.Y. (2025). Analytical modeling and experimental validation of a liquid hydrogen drone tank system. Korean Society of Mechanical Engineers, South Korea.
  2. Prakash, R., Schimpf, J.K., Kim, S.Y. (2024). Experimental validation of a 600 liter liquid hydrogen tank dedicated for heavy duty vehicles. Korean Society of Mechanical Engineers, Gangwon-do, South Korea.
  3. Than, M., Prakash. R., Cho, Gyoujin, Kim, Yoonhyun, Oh, Bukuk, Lee J. (2024). Enhancing homogeneous air distribution in drying chamber for Roll-to-Roll printing through numerical simulation. Korean Society of Visualization, May 1 -3, Hanyang University, Ansan, South Korea.
  4. Than, M., Moon, Hyeokgyun,  Prakash. R., Kim, Yoonhyun, Oh, Bukuk, Cho, Gyoujin, Lee J. (2024). Experimental and numerical study on improvement of air distribution inside a drying chamber for Roll-to-Roll printing application. Korea Flexible & Printed Electronics Society, March 27 -29, South Korea.
  5. Lee, J., Prakash, R., & Lee, J. (2023). Ionic Nanobubble-Mediated Inactivation of Harmful Cyanobacteria. Korean Society of Mechanical Engineers (KSME), November 1 – 3, Songdo Convensia, Incheon, South Korea.
  6. Than, M., Prakash. R., Gyoujin Cho, Yoonhyun Kim, Bukuk Oh, Lee J. (2023). Analysing drying chamber for roll-to-roll printing using numerical and experimental investigations. Korea Flexible Printed Electronics Society, October 18 -20, Gangneung, South Korea.
  7. Lee, J., Prakash, R., & Lee, J. (2023). Mechanistic insight of bulk nanobubbles in various liquid medium. American Society of Mechanical Engineers (ASME), July 9 -13, Osaka, Japan.
  8. Than, M., Prakash. R., Lee J. (2023). Computational and experimental thermal analysis of a drying chamber for Roll-to-Roll printing application. Korean Society of Mechanical Engineers (KSME), November 1 -3, Songdo Convensia, Incheon, Republic of Korea.
  9. Lee, J., Prakash, R., & Lee, J. (2023). Effect of carbon chain length of the cationic surfactant on Nanobubbles characteristics. KSME Micro/Nanoengineering Division Spring Conference, April 19 – 22, Busan, South Korea.
  10. Prakash R., Sangtam, B. T., Majumder S.K., Singh, A. (2023). Effect of surfactant concentration and gas velocity on holdup characteristics in a semi-batch 2-D column. Springer, Singapore, Fluid Mechanics and Fluid Power, 2, 463-466. https://doi.org/10.1007/978-981-19-6970-6_77
  11. Lee, J., Prakash, R., & Lee, J. (2022). Analysis of the nanobubbles stability in various media. Korean Socienty of Visualization, Korea Advanced Institute of Science and Technology (KAIST), December 1, South Korea.
  12. Lee, J. Prakash, R., Lee, J. (2022). Investigation of cavitation bulk nanobubbles in various pH and surfactant concentrations. Bulletin of the American Physical Society, 75th Annual Meeting of the Division of Fluid Dynamics, November 20 – 22, Indianapolis, Indiana, USA.
  13. Lee, J. Prakash, R., Lee, J. (2022). Analysis of Nanobubbles characteristics in various pH and surfactant solutions. KSME Micro/Nanoengineering Division Spring Conference, May 18 – 20, Busan, South Korea.
  14. Lee, J. Prakash, R., Lee, J. (2022). Characterization of cavitation bulk nanobubbles: Inspired by pistol-shrimp. KSME Bioengineering Division Spring Conference, April 20 – 22, South Korea.
  15. Prakash, R., Sangtam, B. T., Majumder, S. K. and Singh, A. (2021). Effect of surfactant concentration and gas velocity on holdup characteristics in a semi-batch 2-d column. 48th National Conference on Fluid Mechanics and Fluid Power, December 27 – 29, Department of Mechanical Engineering, BITS Pilani, Rajasthan, India.
  16. Prakash, R., Fahad, M. K., and Majumder, S. K. (2021).  Particle recovery study in a laboratory scale flotation column. 74th Annual Session of Indian Institute of Chemical Engineers CHEMCON, December 27 – 30, IMMT Bhubneswar, India.
  17. Prakash, R., Sangtam, B. T., and Majumder, S. K. (2021). Bubble size distribution in a semi-batch slurry bubble column. Complex Fluids and Soft Matter, December 13-15, IIT Gandhinagar, Gandhinagar, India.
  18. Prakash, R., Sangtam, B. T., Barma, S. D., Hembrom, K., Majumder, S. K. and Singh, A. (2020). Bubble size analysis in a two-phase counter-current flow in the 2-d column. Proceedings of the 8th International and 47th National Conference on Fluid Mechanics and Fluid Power (FMFP), December 9-11, IIT Guwahati, India.
  19. Prakash, R., Majumder, S. K., and Singh, A. (2020). A study of bubble size and its distribution in a flotation column. RECYCLE, 3rd international conference on waste management, 13 – 14 February, IIT Guwahati, India.
  20. Prakash, R., Majumder, S. K., and Singh, A. (2020). Dispersion characteristics in a counter-current three-phase column. International Conference on Advances in Chemical Engineering (AdChE), February 5 – 7, Department of Chemical Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand, India.
  21. Prakash, R., Majumder, S. K., and Singh, A. (2019). Dispersion characteristics in a microstructured slurry bubble column. First National Student Conference on “Advances in Chemical Engineering”, August 30, Department of Chemical Engineering, Assam Engineering College, Guwahati, Assam, India.
  22. Prakash, R., Majumder, S. K., and Singh, A. (2019). Particle-laden bubble size distribution in a microstructured slurry bubble column. Research Conclave, 14 – 17 March, IIT Guwahati, India.
  23. Prakash, R., Majumder, S. K., and Singh, A. (2018). Pressure drop characteristics in the presence of solid particles. Research Conclave, 8 – 11 March, IIT Guwahati, India.
  24. Prakash, R., Majumder, S. K., and Singh, A. (2018). Gas holdup and bubble size distribution in microstructured flotation column. XVII International Seminar on Mineral Processing Technology, 10 – 12 October, IIT (ISM) Dhanbad, India.
  25. Prakash, R., Majumder, S. K., and Singh, A. (2017). Hydrodynamic characteristics in microstructure flotation column (MFC). Mineral Processing Technology (MPT), February 1 – 3 at Mahabalipuram, Chennai, India.
  26. Prakash, R., Majumder, S. K., and Singh, A., (2017). Bubble size & its distribution in the presence of solid particles. Research Conclave, 16 -19 Marc, IIT Guwahati, India.
  27. Prakash R. and Samanta A. N. (2015). Energy integration study in Petlyuk distillation column. Indian Chemical Engineering Congress (CHEMCON), December 27 -30, IIT Guwahati, India.
  28. Prakash R. and Samanta A. N. (2014). Energy integration study in distillation column. 67th Annual Session of Indian Institute of Chemical Engineers (IIChE), (CHEMCON), December 27 – 30 at Dr. S. S. Bhatnagar University Institute Chemical Engineering & Technology, Panjab University, Chandigarh.
  29. Prakash R. & Majumder S. K. (2013). Quality of mixing and its effect on particle separation in a flotation column. At 26th International Mineral Processing Congress, 3107-3116.

Patents

  1. Lee, J., Prakash, R., & Lee, J., Utilization of surfactant in acoustic cavitation method nanobubble generating device and method to control the size of nanobubbles, KOR patent- R - 2022 -0236-KR-1.

Projects & Activities

Other Academic and Administrative Activities

Invited Talk

  • Delivered an invited talk on "Overview of H₂ generation, liquefaction, cryogenic storage, and LH₂ applications" organized by the Indian Institute of Chemical Engineers (IIChE), Bhubaneswar Regional Centre on 16th December 2025.

Academic Activities

  • Guided CO-OP students on project – Nanobubbles characteristics in various salt solutions, March 2023 – June 2023, Sungkyunkwan University, South Korea.
  • Guided CO-OP students on project - Flow Analysis in Metal 3D Printer, December 2021 – February 2022, Sungkyunkwan University, South Korea.
  • Teaching assistantship for Massive Online Open Course (MOOC) on Fluidization Engineering, by Ministry of Human Resource Development (MHRD), Govt. of India under National Program on Technology Enhanced Learning (NPTEL) 2020 (July - December 2020).
  • Teaching assistantship for Massive Online Open Course (MOOC) on Chemical Process Intensification by Ministry of Human Resource Development (MHRD), Govt. of India under National Program on Technology Enhanced Learning (NPTEL), July 2019.
  • Teaching assistantship for Massive Online Open Course (MOOC) on Fluid Flow Operations by Ministry of Human Resource Development (MHRD), Govt. of India under National Program on Technology Enhanced Learning (NPTEL), January 2019.
  • Teaching assistantship for Massive Online Open Course (MOOC) on Fluidization Engineering, by Ministry of Human Resource Development (MHRD), Govt. of India under National Program on Technology Enhanced Learning (NPTEL), January 2018.

Workshop, Global Initiative of Academic Networks (GIAN), and Webinar

  • Participated in a workshop on Particle Image Velocimetry (PIV). 14 -17 March 2019, Research Conclave, IIT Guwahati, Assam, India.
  • Attended workshop on ultrasound contrast agents: application of gas-filled microbubbles in biomedical engineering. 23 – 23 July 2021, IIT Gandhinagar, India.
  • Attended GIAN course on physical modeling of multiphase processes in mineral and chemical processing. 23 – 28 October 2017, IIT Guwahati, India.
  • Attended GIAN course on reservoir simulation: mathematical techniques in oil & gas recovery. 18 – 29 July 2016, IIT Guwahati, India.
  • Attended GIAN course on density functional theory for heterogeneous catalysis. 6 – 11 August 2018, IIT Guwahati, India.
  • Attended 1st National workshop on Guayule Natural Rubber—A sustainable material for the rubber industry in the 21st Century. 10 – 11 April 2015, IIT Kharagpur, India.
  • Attended national webinar on Advances in the Field of Chemical & Material Science Research. 16 – 17 August 2020, Department of Chemical & Polymer Engineering, Tripura University.
  • Participated in the workshop entitled “deep eutectic solvents for environmental remediation and energy storage”. 29th–30th July 2020, Scheme for Promotion of Academic and Research Collaboration (SPARC), IIT Guwahati, India.
  • Attended Indo-Israel workshop on membranes in water treatment: opportunities & challenges. 5 – 6 November 2020, school of environmental studies, Cochin University of Science and Technology, Kerala, India. 
  • Attended Indo-UK SPARC workshop on water pollution and river dynamics. 19 – 20 November 2020, School of Environmental Sciences, Mahatama Gandhi University, Kottayam, Kerala, India. 
  • Attended a national workshop on solid waste management. 30 – 31 July 2021, Delhi Technology Cluster, Delhi Research Implementation and Innovation.

Guidance

PhD Opportunity: Join Our Research Team

We are seeking a highly motivated and talented PhD candidate to join our research team and work on cutting-edge technologies. This is an excellent opportunity for individuals who are passionate about innovation, research, and solving challenging real-world problems.

What we're looking for:

  • Strong academic background and research aptitude
  • Passion for advanced technology and innovation
  • Self-motivated with excellent problem-solving skills
  • Ability to work independently as well as in a collaborative research environment

If you are interested in pursuing impactful research and contributing to next-generation technologies, we would love to hear from you.

To apply or inquire, please contact:
Email: ritesh@iitism.ac.in

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