ravi.che's picture
Dr. Ravi P. Jaiswal
Assistant Professor
Department of Chemical Engineering & Technology
ravi.che@iitbhu.ac.in
Email
Area of Interest: 
Fabrication of Solar Cells, Renewable Energy, Industrial Wastewater Treatment, Interfacial 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. Assistant Professor, Indian Institute of Technology (BHU), Varanasi, India, [Oct 2015 – Present]
2. Research Scientist, MEMC Electronic Materials Inc.(aka SunEdison), St. Peter, MO, USA, [Feb 2011 - Jun 2014]
3. 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 Graduate 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
Solar Energy
We are interested to explore and augment the current understanding of the photovoltaic devices, such as Silicon solar cell and Dye-Sensitized solar cell, with the final 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 currency spent, hence there is always a push to lower the cost and enhance the efficiency to make the solar technology more economically competitive. We are interested to reduce the optical, electrical and thermal losses incurred in the 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.
 
Remediation and Reuse of Industrial Wastewater
We are interested to degrade textile dyes and other organic contaminants present in the wastewater effluents of various industries. We are particularly working on physical, chemical and biological routes or a hybrid process for capturing and detoxifying dyeing contaminants present in the wastewater. Our final goal is to develop an economical and efficient process to treat and reuse the textile wastewater at large scale.

Interfacial Adhesion
We are interested in understanding and engineering the adhesion characteristics at the solid-solid and solid-fluid interfaces by modifying the physical and chemical properties of the interacting surfaces. The relevant applications may include, but not limited to, Easy-to-clean surfaces, Biofouling-resistant surfaces, Asphalt adhesion, etcetera. In particular, we are studying the roles of surface morphologies and surface chemistries in altering the interfacial forces (or surface free energy) to lead a desired adhesive response.
 
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 4.15M], 2019-22
  2. Institute Start-up Fund, By IIT-BHU, [INR 1M], 2016-17

Graduate (Ph. D.) Students

  1. Ms. Juhi Singh
  2. Mr. Yash Srivastava

Submitted Ph.D. Thesis

  1. Mr. Anuj Chaturvedi: Mineralization and Detoxification of Dyeing Wastewater Using Integrated Ozonation and Bioreactor System
  2. Mr. Ravi K. Sonwani (Co-advised): Process Design and Optimization of Bioreactors for the Treatment of Aromatic Hydrocarbons and Dyes using Isolated Bacterial Species
  3. Mr. Ganesh Swain (Co-advised): Biodegradation of Phenol and its Derivatives in  Packed and Moving Bed Bioreactors using Bacillus sp. Isolated from a Petroleum Site 

JOURNAL PUBLICATIONS
Renewable Energy

  1. Singh, J., Kumar, A., Suman, S., and Jaiswal, R.*, “Luminescent down-shifting natural dyes to enhance photovoltaic efficiency of multicrystalline silicon solar module”, Solar Energy, vol. 206, 353-364 (2020)

Industrial Wastewater Treatment

  1. Swain, G., Maurya, K. L., Sonwani, R.K., Singh, R.S., Jaiswal, R., 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)
  2. Swain, G., Maurya, K. L., Kumar, M., Sonwani, R.K., Singh, R.S., Jaiswal, R., 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)
  3. Swain, G., Sonwani, R.K., Singh, R.S., Jaiswal, R., 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)
  4. Chaturvedi, A., Rai, B.N., Singh, R.S., and Jaiswal, R.*, “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)
  5. Chaturvedi, A., Rai, B.N., Singh, R.S., and Jaiswal, R.*, “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)
  6. Swain, G, Singh, S., Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R., 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)
  7. Swain, G, Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R., 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)
  8. Sonwani, R.K., Swain, G., Jaiswal, R., 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)
  9. Chaturvedi, A., Rai, B.N., Singh, R.S., and Jaiswal, R.*, “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, (2020)
  10. Swain, G., Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R., 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)
  11. Swain, G., Sonwani, R.K., Giri, B.S., Singh, R.S., Jaiswal, R., 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)
  12. Swain, G., Sonwani, R.K., Nagar, P. , Giri, B.S., Jaiswal, R., 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)
  13. Sonwani, R.K., Giri, B.S., Jaiswal, R., 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)
  14. Swain, G., Sonwani, R.K., Singh R.S., Jaiswal, R., 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)

Interfacial Adhesion

  1. Jaiswal, R.*, 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).
  2. Jaiswal, R., and Beaudoin, S., “Approximate Scheme for Calculating van der Waals Interactions between Finite Cylindrical Volume Elements”, Langmuir, vol.28(22), 8359–8370, (2012).
  3. Kilroy, C., Jaiswal, R., and Beaudoin, S., “Adhesion of Contaminant Particles to Advanced Photomask Materials”, IEEE Transactions on Semiconductor Manufacturing, vol. 25 (1), 37-44 (2012).
  4. Jaiswal, R., 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).
  5. Jaiswal, R., 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).
  6. Kumar, G., Smith, S., Jaiswal, R., 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).
  7. Beaudoin, S., Graham, S., Jaiswal, R., 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).

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

BOOK CHAPTER
1. 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)
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. 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) 

  1. Jaiswal, R., “Solar Energy: the Future Global Energy”, QIP Short Term Course on Bio Energy, Dep. of Chemistry., IIT (BHU) Varanasi, (Mar 03rd, 2021)
  2. 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)
  3. 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)
  4. 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)
  5. Smith, K., Jaiswal, R., and Beaudoin, S., “Effects of Varying Surface Film Thickness on Particle Adhesion”, Annual Meeting of the American Institute of Chemical Engineering, Particle Technology Forum, Salt Lake City, UT, USA (Nov-9, 2010)
  6. Jaiswal, R., and Beaudoin, S., “Fundamental Study of Surface Forces in Particle Adhesion to Thin Films”, Invited talk, The 32nd Annual Meeting of the Adhesion Society, Savannah, GA, USA (Feb 15-19, 2009)
  7.  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 Engineering, Pharmaceuticals - New Ideas and Concepts, Chicago, IL, USA (Sep-23, 2008)
  8. 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)
  9. Jaiswal, R., Kilroy, C., and Beaudoin, S., “Adhesion between Particles and Nano-Structured Films”, Invited talk, The5th International Surface Cleaning Workshop, Boston, MA, USA (Nov 13-14, 2007)
  10. Kilroy, C., Kumar, G., Jaiswal, R., and Beaudoin, S., “Particle Adhesion to Photomask Materials”, Annual Meeting of the American Institute of Chemical Engineering, Materials Engineering and Sciences Division, Salt Lake City, UT, USA (Nov-8, 2007)
  11. 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 Engineering, Particle Technology Forum,  Salt Lake City, UT, USA (Nov-5, 2007)
  12. 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)
  13. 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)
  14. 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)
  15. Jaiswal, R., “Boundary Layer in Fluid Mechanics”, Seminar talk in “Winter Academy” held by DAAD, Germany at IIT Kanpur, India (2002)