• Bioremediation of organic pollutants Bioenergy Microbiology Development of proton exchange membrane for microbial fuel cell application

• Photocatalytic hydrogen generation

• Chemical process modeling and simulation Mass transfer-I

• Feb 2024 – Present: Assistant Professor, Department of Chemical and Biochemical Engineering, Indian Institute of Technology, Patna Feb 2023 – January 2024: Institute Post-Doctoral Fellow, Indian Institute of Technology, Dhanbad. Aug 2016 – July 2017: Assistant Professor (Adhoc), Chemical Engineering Department, Indira Gandhi Institute of Technology, Sarang, Odisha, India. June 2015 – Aug 2016: Graduate Engineer Trainee, JK Paper Ltd.,, Rayagada, Odisha, India

• Received best oral presentation award at “International Conference on Biotechnology for Resource Efficiency, Energy, Environment, Chemicals, and Health (BREECH-2021)”. MHRD fellowship (2017-2022)

• • Book Chapter: Kumar, M., Swain, G., Sonwani, R. K., Singh, R. S., Verma, A., & Rai, B. (2021). Effect of operating parameters on photocatalytic degradation of dyes by using graphitic carbon nitride. In Photocatalytic degradation of dyes (pp. 23-43). Elsevier.

• 1. Kumar, R., Swain, G., & Dutta, S. (2024). Synthesis of visible light-sensitive photocatalysts for hydrogen production. Fuel, 360, 130555.
  2. Maurya, K. L., Swain, G., Kumar, M., Sonwani, R. K., Verma, A., & Singh, R. S. (2023). Biodegradation of Congo Red Dye Using Lysinibacillus Species in a Moving Bed Biofilm Reactor: Continuous Study and Kinetic Evaluation. Applied Biochemistry and Biotechnology, 1-13.
  3. Swain, G., Maurya, K. L., Kumar, M., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., & Nath Rai, B. (2022). 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, 1-19.
  4. Swain, G., Maurya, K. L., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2022). Effect of mixing intensity on biodegradation of phenol in a moving bed biofilm reactor: Process optimization and external mass transfer study. Bioresource Technology, 126921.
  5. Maurya, K. L., Swain, G., Sonwani, R. K., Verma, A., Singh, R. S. (2022). Biodegradation of Congo red dye using polyurethane foam-based biocarrier combined with activated carbon and sodium alginate: Batch and continuous study. Bioresource Technology, 126999.
  6. Swain, G., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2021). A comparative study of 4-chlorophenol biodegradation in a packed bed and moving bed bioreactor: Performance evaluation and toxicity analysis. Environmental Technology & Innovation, 101820.
  7. Maurya, K. L., Swain, G., Sonwani, R. K., Verma, A., Singh, R. S. 2021. Bioremediation of Congo red in an anaerobic moving bed bioreactor: Process optimization and kinetic modeling. Bioresource Technology Reports, 16, 100843.
  8. Sonwani, R. K., Swain, G., Jaiswal, R. P., Singh, R. S., Rai, B. N. (2021). Moving bed biofilm reactor with immobilized low-density polyethylene–polypropylene​ for Congo red dye removal. Environmental Technology & Innovation, 23, 101558.
  9. Swain, G., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2021). Removal of 4-Chlorophenol by Bacillus flexus as free and immobilized system: Effect of process variables and kinetic study. Environmental Technology & Innovation, 21, 101356.
  10. Swain, G., Singh, S., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2021). Removal of Acid Orange 7 dye in a packed bed bioreactor: Process optimization using response surface methodology and kinetic study. Bioresource Technology Reports, 13, 100620.
  11. Swain, G., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2020). Removal of Acid blue 113 dye in a moving bed biofilm reactor using isolated bacterial species. Journal of Indian Chemical Society, 97, 1668-1672.
  12. Swain, G., Sonwani, R. K., Giri, B. S., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2020). 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.
  13. Swain, G., Sonwani, R. K., Giri, B. S., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2020). Collective removal of phenol and ammonia in a moving bed biofilm reactor using modified bio-carriers: Process optimization and kinetic study. Bioresource technology, 306, 123177.
  14. Swain, G., Sonwani, R. K., Singh, R. S., Jaiswal, R. P., Rai, B. N. (2020). 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, 97, 332-338.
  15. Sonwani, R. K., Swain, G., Giri, B. S., Singh, R. S., Rai, B. N. (2020). Biodegradation of Congo red dye in a moving bed biofilm reactor: Performance evaluation and kinetic modeling. Bioresource technology, 302, 122811.
  16. Sonwani, R. K., Swain, G., Giri, B. S., Singh, R. S., Rai, B. N. (2020). Optimization of Methylene blue removal by mixed bacterial culture isolated from dye contaminated site. Journal of Indian Chemical Society, 97, 345-350.
  17. Sonwani, R. K., Swain, G., Giri, B. S., Singh, R. S., Rai, B. N. (2019). A novel comparative study of modified carriers in moving bed biofilm reactor for the treatment of wastewater: Process optimization and kinetic study. Bioresource technology, 281, 335-342.

• Swain, G., Jaiswal, R.P., Rai, B.N (2022). Biodegradation of Acid blue dye using chemically modified biocarrier in a moving bed biofilm reactor, International Conference on Technological Interventions For Sustainability (CHEM-CONFLUX), MNNIT, Allahabad, India. Swain, G., Singh, R.S., Rai, B.N. (2021). Effect of mixing intensity on biodegradation of phenol in a moving bed biofilm reactor. International Conference on Biotechnology for Resource Efficiency, Energy, Environment, Chemicals, and Health (BREECH). Swain, G., Singh, R.S., Rai, B.N. (2021). Comparative analysis of different packing materials used in packed bed bioreactor for biodegradation of phenol. International Conference on Biotechnology for Sustainable Agriculture, Environment and Health (BSAEH). Swain, G., Nagar, P., Rai, B.N. (2021). Biodegradation and kinetic analysis of phenol using low-density polyethylene in a packed bed bioreactor. 2nd International conference on chemical, bio & environmental engineering, NIT, Jalandhar, India (CHEMBIOEN). Swain, G., Singh, R.S., Rai, B.N. (2019). Collective removal of phenol and ammonia in a moving bed biofilm reactor. International Conference on New Horizons in Biotechnology, Trivandrum, Kerala, India. Swain, G., Sonwani, R. K., Rai, B.N. (2018). A novel comparative study of modified carriers in moving bed biofilm reactor for wastewater treatment. International Conference on "Biotechnological Research and Innovation for Sustainable Development" XV BRSI Convention BIOSD, Hyderabad, India