Dr. Ravi P. Jaiswal

Associate Professor
Department/School/Unit Name
Department of Chemical Engineering & Technology
Phone No(s): 9990747853
Email: ravi.che@iitbhu.ac.in
Area of Interest: Fabrication of Solar Cells, Green Energy, Industrial Wastewater Treatment, Etching and Cleaning in Semiconductor Processing, Adhesion, Colloids and Surface Science
  • PhD in Chemical Engineering , Purdue University, USA (Dec-2008)
  • B-Tech in Chemical Engineering , IIT Kanpur, India (Jun-2004)

1. Associate Professor, Indian Institute of Technology (BHU), Varanasi, India, [Jun 2023 – Present]

2. Assistant Professor, Indian Institute of Technology (BHU), Varanasi, India, [Oct 2015 – Jun 2023]

3. Research Scientist, MEMC Electronic Materials Inc.(aka SunEdison), St. Peter, MO, USA, [Feb 2011 - Jun 2014]

4. Process Technology Development Engineer, Intel Corp. Hillsboro, OR, USA, [Feb 2009- Feb 2011]

1. BIC (Best-in-Class) Recognition for Technology Transfer in Wet-Etch module during production of the i-Core products (i3/i5/i7)Intel Corp., Hillsboro, OR, USA (2010)

2. Leighton H. Peebles Award for Outstanding PhD Thesis in Adhesion Science, The Adhesion Society, Savanna, GA, USA (2009)

3. General Proficiency Medal, IIT Kanpur, India (2004): Best outgoing student in B-Tech, CHE

4. Ajai Agarawal Memorial Best Student Award, IIT- Kanpur, India (2004): Best academic performance in 2 consecutive years (Sophomore-Junior)

Courses offered

  • Fluid Mechanics
  • Heat and Mass Transfer
  • Nano Science & Technology

Research Interests
A. Photovoltaic Solar Energy
We are interested in exploring and augmenting the current understanding of photovoltaic devices, such as silicon solar cells , dye-sensitized and perovskite solar cells , with the goal of increasing their overall efficiencies. A photovoltaic device is basically a multi-layered structure comprised of the p-n junction, transparent electrodes, metallic contacts, anti-reflection coating, and packaging materials. The competency of a solar technology is evaluated on the basis of the operating efficiency per unit of currency spent. Hence, there is always a push to lower the cost and enhance the efficiency to make solar technology more economically competitive. We are interested in reducing the optical, electrical, and thermal losses incurred in modern photovoltaic devices. Specifically, we are looking into ways to effectively utilize the incident sunlight, prevent recombination pathways, and manage the heat budget for the higher overall efficiency of the solar devices.
B. Remediation and Recycle of Industrial Wastewater, and Green Energy
We are interested in degrading recalcitrant contaminants present in the wastewater effluents of various industries such as petrochemicals, pharmaceutical, textiles, steel, etcetera. We are particularly working on physical, chemical, and biological routes or a hybrid process for capturing and detoxifying dyeing, pharmaceutical, and other inorganic and organic contaminants present in the wastewater. Our ultimate goal is to develop an efficient and cost-effective process for treating industrial wastewater on a large scale, as well as to investigate ways to reuse the treated wastewater to enable a sustainable industrial water ecosystem.

C. Etching and Cleaning in Semiconductor Processing, and Adhesion
Etching and cleaning processes, which are used repeatedly in the manufacturing of a semiconductor device, are required to remove particulate contaminants without causing any damage to the underlying substrates. It necessitates a thorough understanding of the interfacial forces at the solid-solid interface, as well as strict control over the process parameters. We are interested in engineering the adhesion characteristics at the solid-solid and solid-fluid interfaces.

Sponsored Projects
1. Direct Cooling of the Silicon Photovoltaic Module Enabled by Modification of the Backside EVA-Layer, Early Career Research Award  by SERB/DST, [INR 41.5 Lakhs], 2019-22
2. Institute Start-up Fund, By IIT-BHU, [INR 10 Lakhs], 2016-17

Journal Reviewer

1. Langmuir

2. Solar Energy

3. Journal of environmental management

4. Environmental science and pollution research

5. Water, air & soil pollution

6. Applied biochemistry and biotechnology

7. Biochemical engineering journal

8. Journal of water process engineering

JOURNAL PUBLICATIONS [Google Scholar: https://scholar.google.co.in/citations?hl=en&user=WpeZ-_wAAAAJ]

  1. Beaudoin, S., Graham, S., Jaiswal, R. P., Kilroy, C., Kim, B.-S., Kumar, G., and Smith, S.,“An Update on Low-k Dielectrics”, Invited Article, The Electrochemical Society: Interface, vol.14(2), 35 (2005). [IF: 1.212]
  2. Kumar, G., Smith, S., Jaiswal, R. P., and Beaudoin, S., “Scaling of van der Waals and Electrostatic Adhesion Interactions from the Micro- to the Nano-Scale”, Journal of Adhesion Science and Technology, vol.22, 407-428, (2008). [IF: 2.077]
  3. Jaiswal, R. P., Kumar, G., Kilroy, C., and Beaudoin, S., “Modeling and Validation of the van der Waals Force During the Adhesion of Nanoscale Objects to Rough Surfaces”, Langmuir, vol.25(18), 10612–10623, (2009). [IF: 4.331] 
  4. Jaiswal, R. P., and Beaudoin, S.,\ “Nanoparticle Adhesion Models: Applications in Particulate Contaminant Removal from Extreme Ultraviolet Lithography Photomasks”, Journal of Adhesion Science and Technology, vol. 25 (8), 781-797 (2011). [IF: 2.077]
  5. Kilroy, C., Jaiswal, R. P., and Beaudoin, S., “Adhesion of Contaminant Particles to Advanced Photomask Materials”, IEEE Transactions on Semiconductor Manufacturing, vol. 25 (1), 37-44 (2012). [IF: 2.796]
  6. Jaiswal, R. P., and Beaudoin, S., “Approximate Scheme for Calculating van der Waals Interactions between Finite Cylindrical Volume Elements”, Langmuir, vol.28(22), 8359–8370, (2012). [IF: 4.331]
  7. Jaiswal, R. P.*, and Beaudoin, S., “London-van der Waals Force Field of a Chemically Patterned Surface To Enable Selective Adhesion”, Langmuir, vol. 35(1), 86–94, (2019). [IF: 4.331]
  8. Swain, G., Sonwani, R.K., Singh R.S., Jaiswal, R. P., and Rai, B.N., “Removal of Acid blue 113 dye in a moving bed biofilm reactor using isolated bacterial species” Journal of Indian chemical society, vol. 97, 1668-1672, (2020). [IF: 0.243]
  9. Sonwani, R.K., Giri, B.S., Jaiswal, R. P., Singh, R.S., and Rai, B.N., “Performance evaluation of a continuous packed bed bioreactor: Bio-kinetics and external mass transfer study”, Ecotoxicology and Environmental safety, vol. 201, 110860, (2020). [IF: 7.129]
  10. Swain, G., Sonwani, R.K., Nagar, P. , Giri, B.S., Jaiswal, R. P., Singh R.S., and Rai, B.N., “Biodegradation and kinetic analysis of phenol using low-density polyethylene immobilized Bacillus flexus GS1 IIT (BHU) in a packed bed bioreactor”, Journal of Indian chemical society, vol. 97, 332-338, (2020). [IF: 0.243]
  11. Swain, G., Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “Collective removal of phenol and ammonia in a moving bed biofilm reactor using modified bio-carriers: Process optimization and kinetic study”, Bioresource Technology, vol. 306, 123177, (2020). [IF: 11.889]
  12. Swain, G., Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “A study of external mass transfer effect on biodegradation of phenol using low‐density polyethylene immobilized Bacillus flexus GS1 IIT (BHU) in a packed bed bioreactor”, Water and Environment Journal, doi.org/10.1111/wej.12626, (2020). [IF: 1.977]
  13. Singh, J., Kumar, A., Suman, S., and Jaiswal, R. P.*, “Luminescent down-shifting natural dyes to enhance photovoltaic efficiency of multicrystalline silicon solar module”, Solar Energy, vol. 206, 353-364 (2020). [IF: 7.188]
  14. Sonwani, R.K., Swain, G., Jaiswal, R. P., Singh, R.S., and Rai, B.N., “Moving bed biofilm reactor with immobilized low-density polyethylene–polypropylene for Congo red dye removal ” Environmental Technology & Innovation, vol. 23, 101558, (2021). [IF: 7.758]
  15. Swain, G, Singh, S., Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “Removal of Acid Orange 7 dye in a packed bed bioreactor: Process optimization using response surface methodology and kinetic study”, Bioresource Technology Reports, vol. 13, 100620, (2021).
  16. Swain, G., Sonwani, R.K., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “A comparative study of 4-chlorophenol biodegradation in a packed bed and moving bed bioreactor: Performance evaluation and toxicity analysis”, Environmental Technology & Innovation, vol. 24, 101820, (2021). [IF: 7.758]
  17. Swain, G, Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “Removal of 4-Chlorophenol by Bacillus flexus as free and immobilized system: Effect of process variables and kinetic study”, Environmental Technology & Innovation, vol. 21, 102356, (2021). [IF: 7.758]
  18. Chaturvedi, A., Rai, B.N., Singh, R.S., and Jaiswal, R. P.*, “A comprehensive review on the integration of advanced oxidation processes with biodegradation for the treatment of textile wastewater containing azo dyes”, Reviews in Chemical Engineering, doi.org/10.1515/revce-2020-0010, (2021). [IF: 8.742]
  19. Chaturvedi, A., Rai, B.N., Singh, R.S., and Jaiswal, R. P.*, “A Computational Approach to Incorporate Metabolite Inhibition in the Growth Kinetics of Indigenous Bacterial Strain Bacillus subtilis MN372379 in the Treatment of Wastewater Containing Congo Red Dye”, Applied Biochemistry and Biotechnology,  DOI: 10.1007/s12010-021-03538-4, (2021). [IF: 3.094]
  20. Chaturvedi, A., Rai, B.N., Singh, R.S., and Jaiswal, R. P.*, “Comparative Toxicity Assessment using Plant and Luminescent Bacterial Assays after Anaerobic Treatments of Dyeing Wastewater in a Recirculating Fixed Bed Bioreactor”, Journal of Environmental Chemical Engineering, vol. 9 (4), 105466, (2021). [IF: 7.968]
  21. Swain, G., Maurya, K. L., Kumar, M., Sonwani, R.K., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “The Biodegradation of 4-Chlorophenol in a Moving Bed Biofilm Reactor Using Response Surface Methodology: Effect of Biogenic Substrate and Kinetic Evaluation”, Applied Biochemistry and Biotechnology, DOI: 10.1007/s12010-022-03954-0, (2022). [IF: 3.094]
  22. Swain, G., Maurya, K. L., Sonwani, R.K., Singh, R.S., Jaiswal, R. P., and Rai, B.N., “Effect of mixing intensity on biodegradation of phenol in a moving bed biofilm reactor: Process optimization and external mass transfer study”, Bioresource Technology, vol. 351, 126921, (2022). [IF: 11.889]
  23. Chaturvedi, A., Jaiswal, R. P.*, ''Optimization for minimizing the cost of ozonation of highly concentrated textile dyeing wastewater in a bubble column reactor", Environmental Science and Pollution Research, doi.org/10.1007/s11356-022-21800-y, (2022). [IF: 5.190]
  24. Sharma, A., Jaiswal, A., Jaiswal, R. P.*, ''Fabrication of a Tailorable Polystyrene Nanoscale Mesh of Honeycomb Morphology using Nano Sphere Lithography", Thin Solid Films, vol. 763, 139567, (2022). [IF: 2.358]
  25. Chaturvedi, A., Jaiswal, R. P.*, ''Investigation of External Mass Transfer during Biodegradation of Congo Red Dye in a Recirculating Packed Bed Bioreactor", Water, Air, & Soil Pollution, 234, 360 (2023). [IF: 2.984]
  26. Suman, S., Dahiya, S., Jaiswal, R. P., Swaminathan, P., Pal, B. N. "Fabrication of a Red-Sensitive Heterojunction Photodetector by Using a Narrowband Organic Dye", J. Physical Chemistry C, doi/10.1021/acs.jpcc.3c04112 (2023). [IF: 3.7]
  27. Singh, J., Sabinneni, M.A., Jaiswal, R. P.*, “Internal Active Cooling of a Crystalline Silicon Photovoltaic Module: Development of a Modeling Framework”, Solar Energy, vol. 264, 111980 (2023). [IF: 6.7]
  28. Jaiswal, R. P.*, “Air-Breathing Silicon PV Module Enabled by Internal Micro-Fluidic Channels for Direct Cooling Application: A Validated Design Concept”, ACS Energy & Fuels, 10.1021/acs.energyfuels.3c03627 (2024). [IF: 5.3] {Invited for Journal Cover}

1. An Improved Photovoltaic Module with Direct Internal Cooling Feature [Filed, No. 202211050095]


  1. Particle Adhesion and Removal’ Edited by Dr. K. L. Mittal and Dr. R. P. Jaiswal, John Wiley and Scrivener Publishing, USA (2015).


  1. Jaiswal, R., Kilroy, C., Kumar,G., Banerjee, S., and Beaudoin, S., ‘Chapter-14: Particle Adhesion to Photomask Substrate’,  Cleaning and Surface Conditioning Technology in Semiconductor Device Manufacturing, v-11, no.2, pg.465-470 (2007) 
  2. Sonwani, R., Jaiswal, R., Rai, B.N., and Singh, R.S.,'Chapter 15 - Moving bed biofilm reactor- (MBBR-) based advanced wastewater treatment technology for the removal of emerging contaminants', Removal of Emerging Contaminants from Wastewater Through Bio-nanotechnology, pg. 349-370 (2022)
  3. Chaturvedi, A., Singh, R.S., and Jaiswal, R., 'Chapter 27 - Hybrid bioreactor in combination with ozone-based technologies for industrial wastewater treatment', Removal of Emerging Contaminants from Wastewater Through Bio-nanotechnology, pg. 629-650 (2022)

    1. Jaiswal, R., "Fabrication and research aspects of the crystalline Si-PV and dye-sensitized solar cells"  Advanced Semiconductor Devices, Faculty Development Programme at IIITDM Jabalpur (Jan, 29th 2024)
    2. Jaiswal, R."Unlocking the Potential of Green Hydrogen", Net Zero Think Private Limited, Webinar on World Environment Day, (Jun 6th, 2023)
    3. Jaiswal, R., “Enhancement of Solar Light Utilization in Crystalline Silicon Photovoltaic Modules", International Chemical Engineering Conference, IIT Patna, (Nov 12th, 2022)
    4. Jaiswal, R., “Solar Energy: the Future Global Energy”, QIP Short Term Course on Bio Energy, Dep. of Chemistry., IIT (BHU) Varanasi, (Mar 03rd, 2021)
    5. Jaiswal, R., “Solar Photovoltaic Technology”, QIP Short Term Course in AICTE Sponsored “Efficient Energy Conversion in Harmony with Environment” Dep. of Mechanical Eng., IIT (BHU) Varanasi, (Oct 31st, 2018)
    6. Jaiswal, R., “Surface Modification at Solid-Solid Interface to Enable Selective Adhesion”, Nanotech France- The 4th edition of the International Conference, Paris, France (Jun 27th -29th, 2018)
    7. Jaiswal, R., “Adhesion of Particles and Nano-structured Substrates”, Invited talk, The Fourth International Conference on Nanostructured Materials and Nanocomposites, Mahatma Gandhi University, Kottayam, Kerala, India (Feb 10-12, 2017)
    8. Smith, K., Jaiswal, R., and Beaudoin, S., “Effects of Varying Surface Film Thickness on Particle Adhesion”, Annual Meeting of the American Institute of Chemical EngineeringParticle Technology Forum, Salt Lake City, UT, USA (Nov-9, 2010)
    9. Jaiswal, R., and Beaudoin, S., “Fundamental Study of Surface Forces in Particle Adhesion to Thin Films”, Invited talkThe 32nd Annual Meeting of the Adhesion Society, Savannah, GA, USA (Feb 15-19, 2009)
    10.  Beaudoin, S.Jaiswal, R., Kilroy, C., Balachandran, D., and Lee, K., “Pharmaceutical Particle Adhesion to Surfaces”, The 2008 Regional Meeting of American Institute of Chemical EngineeringPharmaceuticals - New Ideas and Concepts, Chicago, IL, USA (Sep-23, 2008)
    11. Jaiswal, R., and Beaudoin, S., “Modeling and experimental validation of surface/interfacial forces between particles and thin films”, Graduate Research Symposium, Purdue University, W. Lafayette, IN, USA (Aug-2008)
    12. Jaiswal, R., Kilroy, C., and Beaudoin, S., “Adhesion between Particles and Nano-Structured Films”, Invited talkThe5th International Surface Cleaning Workshop, Boston, MA, USA (Nov 13-14, 2007)
    13. Kilroy, C., Kumar, G., Jaiswal, R., and Beaudoin, S., “Particle Adhesion to Photomask Materials”, Annual Meeting of the American Institute of Chemical EngineeringMaterials Engineering and Sciences Division, Salt Lake City, UT, USA (Nov-8, 2007)
    14. Jaiswal, R. and Beaudoin, S., “van der Waals Forces Between Micron-/nano-Scale Contaminants and Patterned Substrates”, Annual Meeting of the American Institute of Chemical EngineeringParticle Technology Forum,  Salt Lake City, UT, USA (Nov-5, 2007)
    15. Liang, T, Guojing Z., Henry Y., Jaiswal, R., “Status and Challenges in EUV Mask Cleaning” Extreme UV-Lithography Symposium, Sapporo, Japan (Oct 29-31, 2007)
    16. Jaiswal, R., Kilroy, C., Kumar, G., Banerjee, S., and Beaudoin, S., “Particle Adhesion to Photomask Surfaces”, The 212th Electrochemical Society Meeting, Washington, DC, USA (Oct 7-12, 2007)
    17. Beaudoin, S., Kumar, G., Jaiswal, R., Smith, S., “Adhesion of Nano-Scale Particles to Photomasks”, The 210th  Electrochemical Society Meeting, Nanotechnology General Session, Cancun, Mexico, (Oct 29 – Nov 3, 2006)
    18. Jaiswal, R., “Boundary Layer in Fluid Mechanics”, Seminar talk in “Winter Academy” held by DAAD, Germany at IIT Kanpur, India (2002) 

    Current Ph. D. Students

    Current M. Tech. Students
    1. Ms. Anupama Singh

    2. Ms. Rubal Jain

    Graduated Alumni of our Research Group

    1. Ph.D. Students

    1. Mr. Ravi K. Sonwani (Advisor: Prof. B.N. Rai, Co-advisor: Dr. Ravi P. Jaiswal): Thesis: Process Design and Optimization of Bioreactors for the Treatment of Aromatic Hydrocarbons and Dyes using Isolated Bacterial Species (Aug 2016 - Apr 2021)

    Current position: Assistant Professor, Department of Chemical Engineering,  Indian Institute of Petroleum & Energy, Visakhapatnam, AP

    2. Mr. Anuj Chaturvedi (Advisor: Dr. Ravi P. Jaiswal, Co-advisor: Prof. R.S. Singh): Thesis: Mineralization and Detoxification of Dyeing Wastewater Using Integrated Ozonation and Bioreactor System (Aug 2017 - Feb 2022)

    Current position: Lecturer, Department of Technical Education, UP

    3. Mr. Ganesh Swain (Advisor: Prof. B.N. Rai, Co-advisor: Dr. Ravi P. Jaiswal): Thesis: Biodegradation of Phenol and its Derivatives in  Packed and Moving Bed Bioreactors using Bacillus sp. Isolated from a Petroleum Site (Dec 2017 - Jan 2022)

    Current position: Assistant Professor, IIT Patna, Bihar

    4. Ms. Juhi Singh (Advisor: Dr. Ravi P. Jaiswal): Thesis: Material and Process Optimization in Dye Sensitized Solar Cell for Efficiency Enhancement (Aug 2017 - Sep 2023)

    Current position: Kingfa S&T. Ltd.

    1. M.Tech. Students

    1. Mr. Abhishek Sharma (2016-18)

    2. Mr. Rajneesh Kumar (2016-18)

    3. Mr. Avan Kumar (2017-19), Current position: PhD at IIT Delhi

    4. Ms. Shreya Chowdhury (2017-19), Current position: PhD at IISc Bangalore

    5. Mr. Pankaj Kumar (2017-19)

    6. Ms. Priya Srivastava (2018-20), Current position: Consultant at PricewaterhouseCoopers (PWC), Ltd.

    7. Mr. Ritu Raj (2018-20), Current position:

    8. Mr. Deepesh Porwar (2019-21)

    9. Mr. Yash Srivastava (2019-21), Current position: PhD at IIT Roorkee

    10. Mr. Bhawani Singh (2019-21)

    11. Mr. Armaan Swaroop (2020-22), Current position: Engineer at RCF (Rashtriya Chemicals and Fertilizers Ltd.)

    12. Mr. Mohit Upadhyaya (2020-22), Current position: Engineer at Tata Steel Ltd.

    13. Mr. Ashutosh Nandwana (2020-22)

    14. Mr. Prateek Rituraj (2021-23), Current position: Research Engineer at Reliance Solar Energy

    15. Mr. Himanshu Singh (2021-23), Current position: Research Engineer at KBR Ltd.

    1. B.Tech. Students:
    1. Mohan Aditya Sabbineni (Current position: PhD at University of Minnesota, USA)

    **Self-funded students, such as JRFs, PMRFs, and PDFs from engineering and science backgrounds, who aspire to work in the fields of solar energy, hydrogen production, wastewater treatment, semiconductor processing, adhesion, and colloids and interfacial engineering are encouraged to email me for more information.