A. Ozone Microbubble Technology and Advanced Oxidation Processes

• Khuntia, S., Majumder, S. K., & Ghosh, P. (2012). Microbubble-aided water and wastewater purification: A review. Reviews in Chemical Engineering, 28(4–6), 191–221.
• Khuntia, S., Majumder, S. K., & Ghosh, P. (2013). Removal of ammonia from water by ozone microbubbles. Industrial & Engineering Chemistry Research, 52, 318–326.
• Khuntia, S., Majumder, S. K., & Ghosh, P. (2014). Oxidation of As(III) to As(V) using ozone microbubbles. Chemosphere, 97, 120–124.
• Khuntia, S., Majumder, S. K., & Ghosh, P. (2014). A pilot plant study of the degradation of Brilliant Green dye using ozone microbubbles: Mechanism and kinetics of reaction. Environmental Technology, 36(3), 336–347.
• Khuntia, S., Majumder, S. K., & Ghosh, P. (2015). Quantitative prediction of hydroxyl radical generation from ozone microbubbles. Chemical Engineering Research and Design, 98, 231–239.
• Kumar, G., & Majumder, S. K. (2016). Process intensification of oily wastewater treatment by ionic microbubble in a plant prototype. International Journal of Research in Chemical, Metallurgical and Civil Engineering, 3(1).
• Khuntia, S., Majumder, S. K., & Ghosh, P. (2017). Catalytic ozonation of dye in a microbubble system: Hydroxyl radical contribution and effect of salt. Journal of Environmental Chemical Engineering, 4, 2250–2258.
• Patel, S., Agarwal, R., Majumder, S. K., Das, P., & Ghosh, P. (2019). Kinetics of ozonation and mass transfer of pharmaceuticals degraded by ozone fine bubbles in a plant prototype. Heat and Mass Transfer, 56, 385–397.
• Patel, S., Majumder, S. K., Das, P., & Ghosh, P. (2019). Ozone microbubble-aided intensification of degradation of pharmaceuticals in a plant prototype. Journal of Environmental Chemical Engineering, 7(3), 103102.
• Patel, S., Majumder, S. K., & Ghosh, P. (2021). Ozonation of diclofenac in a laboratory-scale bubble column: Intermediates, mechanism, and mass transfer study. Journal of Water Process Engineering, 44, 102325.
• Singh, A., & Majumder, S. K. (2025). Degradation kinetics of 4-nitrophenol and its control by ozone bubble with and without nanocatalyst in an ozone bubble column reactor. Journal of Environmental Chemical Engineering, 13(5), 117471.
• Singh, A., & Majumder, S. K. (2025). A hybrid ozone and hydrogen peroxide approach for treating refractory compounds in petroleum wastewater. Journal of Water Process Engineering, 80, 109082.

B. Adsorption and Heavy Metal Removal

• Khuntia, S., Majumder, S. K., & Ghosh, P. (2016). Adsorption of As(V) on zirconium-based adsorbents. Desalination and Water Treatment, 57, 1766–1778.
• Mondal, S., & Majumder, S. K. (2019). Honeycomb-like porous activated carbon synthesized from natural sources for efficient Cu(II) adsorption: Kinetic study and equilibrium isotherm analysis. Journal of Environmental Chemical Engineering, 7(4), 103236.
• Mondal, S., & Majumder, S. K. (2019). Synthesis of phosphate-functionalized highly porous activated carbon and its utilization as an efficient Cu(II) adsorbent. Korean Journal of Chemical Engineering, 36(5), 701–712.
• Mondal, S., & Majumder, S. K. (2020). Copper adsorption based on hydrodynamics and mixing characteristics on amine-functionalized reduced graphene oxide-coated glass beads in a multichannel packed-bed device. Industrial & Engineering Chemistry Research, 59(25), 11864–11879.
• Mondal, S., & Majumder, S. K. (2021). Cationic surfactant-aided surface modification of activated carbon-based materials for enhancement of phenol adsorption capacity determined by ultraviolet-visible spectroscopy. Journal of Dispersion Science and Technology, 43(13), 1968–1982.
• Mondal, S., & Majumder, S. K. (2021). Lead adsorption in a serpentine millichannel-based packed-bed device: Effect of hydrodynamics and mixing characteristics. AIChE Journal, 67, e17238.

C. Pharmaceutical Pollutant Removal and Hybrid Treatment Processes

• Bhattacharya, S., Banerjee, P., Bhattacharya, S., Ratour, R. K. S., Majumder, S. K., Das, P., & Datta, S. (2018). Comparative assessment on the removal of ranitidine and prednisolone present in solution using graphene oxide nanoplatelets. Desalination and Water Treatment, 132, 287–296.
• Mondal, S., Patel, S., & Majumder, S. K. (2020). Naproxen removal capacity enhancement by transforming activated carbon into a blended composite material. Water, Air, & Soil Pollution, 231(37), 1–16.
• Mondal, S., Patel, S., & Majumder, S. K. (2020). Bioextract-assisted in-situ green synthesis of Ag-RGO nanocomposite film for enhanced naproxen removal. Korean Journal of Chemical Engineering, 37(2), 274–289.
• Patel, S., Mondal, S., Majumder, S. K., Das, P., & Ghosh, P. (2020). Treatment of pharmaceutical industrial effluent by a hybrid process of advanced oxidation and adsorption by activated char. ACS Omega, 5(50), 32305–32317.

• Bhattacharya, S., Banerjee, P., Das, P., Bhowal, A., Majumder, S. K., & Ghosh, P. (2020). Removal of carbamazepine from aqueous solution using graphene oxide nanoplatelets: Process modelling and optimization. Sustainable Environment Research, 30, 17.
• Mondal, S., & Majumder, S. K. (2020). Fabrication of polysulfone-based composite ultrafiltration membranes for the adsorptive removal of heavy metal ions from contaminated aqueous solutions. Chemical Engineering Journal, 401, 126036.

E. Photocatalysis, Nanomaterials and Artificial Intelligence Modeling

• Bhattacharya, S., Das, P., Bhowal, A., & Majumder, S. K. (2022). Metal oxide-coated graphene oxide nanocomposite for treatment of pharmaceutical compounds in a photocatalytic reactor: Batch kinetics and mathematical modelling using response surface methodology and artificial neural network. Environmental Science and Pollution Research, 29, 1–18.
• Dolai, M. K., Majumder, S. K., & Golder, A. K. (2026). Nature-inspired oxygen-deficient Bi₂MoO₆ nanoparticles for photocatalytic degradation of ciprofloxacin. Journal of Environmental Chemical Engineering, 14(2), 121684.

A. Bubble Columns, Mixing and Process Intensification

• Majumder, S. K., Kundu, G., & Mukherjee, D. (2005). Mixing mechanism in ejector induced downflow bubble column. Chemical Engineering Journal, 112(1–3), 45–55.
• Majumder, S. K., Kundu, G., & Mukherjee, D. (2005). Theoretical study of bubble behaviour due to pressure distribution and energy dissipation in an ejector induced bubble column. I.E. (I) Journal-CH, 86, 29–33.
• Majumder, S. K., Kundu, G., & Mukherjee, D. (2006). Prediction of pressure drop in a modified downflow bubble column reactor. Chemical Engineering Science, 61, 4060–4070.
• Majumder, S. K., Kundu, G., & Mukherjee, D. (2006). Bubble size distribution and interfacial phenomena in ejector induced downflow bubble column. Chemical Engineering Journal, 122(1–2), 1–10.
• Majumder, S. K., Kundu, G., & Mukherjee, D. (2006). Efficient dispersion in a modified two-phase non-Newtonian downflow bubble column. Chemical Engineering Science, 61(20), 6753–6764.
• Majumder, S. K., Kundu, G., & Mukherjee, D. (2007). Energy efficiency of two-phase mixing in a modified bubble column. The Canadian Journal of Chemical Engineering, 85(3), 280–289.
• Majumder, S. K., Kundu, G., & Mukherjee, D. (2007). Pressure drop and bubble–liquid interfacial shear stress in a modified gas–non-Newtonian liquid downflow bubble column. Chemical Engineering Science, 62, 2482–2490.
• Majumder, S. K. (2008). Analysis of dispersion coefficient of bubble motion and velocity characteristic factor in down and upflow bubble column reactor. Chemical Engineering Science, 63, 3160–3170.
• Majumder, S. K. (2008). Efficiency of non-reactive isothermal bubble column based on mass transfer. Asia-Pacific Journal of Chemical Engineering, 3(4), 440–451.
• Manish, P., & Majumder, S. K. (2009). Quality of mixing in downflow bubble column based on information entropy theory. Chemical Engineering Science, 64(8), 1798–1805.
• Singh, M. K., & Majumder, S. K. (2011). Co- and counter-current mass transfer in bubble column. International Journal of Heat and Mass Transfer, 54, 2283–2293.
• Joshi, R., & Majumder, S. K. (2011). CFD simulation of hydrodynamics of bubbly flow in bubble column. Journal of Engineering and Applied Sciences, 6(1), 47–57.
• Sivaiah, M., Parmar, R., & Majumder, S. K. (2012). Hydrodynamics of bubbly flow in a modified reactor. International Journal of Chemical and Molecular Engineering, 6(9), 894–897.
• Sivaiah, M., & Majumder, S. K. (2012). Gas holdup and frictional pressure drop of gas–liquid–solid flow in a modified slurry bubble column. International Journal of Chemical Reactor Engineering, 10, A72.
• Sivaiah, M., Parmar, R., & Majumder, S. K. (2012). Gas entrainment and holdup characteristics in a modified gas–liquid–solid downflow three-phase contactor. Powder Technology, 217, 451–461.
• Sivaiah, M., & Majumder, S. K. (2013). Mass transfer and mixing in an ejector-induced downflow slurry bubble column. Industrial & Engineering Chemistry Research, 52(35), 12661–12671.
• Sivaiah, M., & Majumder, S. K. (2013). Hydrodynamics and mixing characteristics in an ejector-induced downflow slurry bubble column. Chemical Engineering Journal, 225, 720–733.
• Sivaiah, M., & Majumder, S. K. (2013). Dispersion characteristics of liquid in a modified gas–liquid–solid three-phase downflow bubble column. Particulate Science and Technology, 31, 210–220.
• Prakash, R., Majumder, S. K., & Singh, A. (2020). Bubble–slurry interfacial shear stress and frictional pressure drop in a microstructured column in the presence and absence of a surface-active agent. Powder Technology, 366, 761–775.
• Prakash, R., Majumder, S. K., & Singh, A. (2020). Bubble size distribution and specific interfacial area in two-phase microstructured bubbling bed. Chemical Engineering Research and Design, 156, 108–130.
• Prakash, R., Bhattacharyya, A., & Majumder, S. K. (2020). Experimental investigation and analysis of gas holdup in a three-phase counter-current microstructured bubble column. Journal of Dispersion Science and Technology, 43(2), 243–258.
• 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, 043305.
• 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, 281–297.
• Sharmah, M. K., Banik, R. K., Thakur, V. K., Soni, A., Majumder, S. K., & Kalita, P. (2025). Experimental investigation of bed hydrodynamics of a pilot-scale dual fluidized bed system. Powder Technology, 121664.

B. Packed Beds, Helical Coils and Transport Phenomena

• Patel, S. K., & Majumder, S. K. (2011). Interfacial stress in non-Newtonian flow through packed bed. Powder Technology, 211, 127–134.
• Patel, S. K., & Majumder, S. K. (2011). Reduction of drag in non-Newtonian flow through packed bed. Journal of Engineering and Applied Sciences, 6(2), 147–151.
• Patel, S. K., & Majumder, S. K. (2012). Frictional pressure drop of additive-based non-Newtonian flow in packed bed. Special Topics & Reviews in Porous Media, 3(3), 97–106.
• Thandlam, A. K., Das, C., & Majumder, S. K. (2017). Flow pattern-based mass and heat transfer and frictional drag of gas–non-Newtonian liquid flow in helical coil: Two- and three-phase systems. Heat and Mass Transfer, 53(4), 1183–1197.
• Thandlam, A. K., & Majumder, S. K. (2017). Dynamic interaction model to analyze hydrodynamics of gas–non-Newtonian liquid plug and slug flow in vertical helical coil pipe. International Journal of Fluid Mechanics Research, 43(4), 1–27.
• Mondal, S., & Majumder, S. K. (2020). Heat transport based on hydrodynamics and the local entropy generation rate in straight and serpentine rectangular packed narrow channels. Applied Thermal Engineering, 171, 115057.
• Mondal, S., & Majumder, S. K. (2021). Lead adsorption in a serpentine millichannel-based packed-bed device: Effect of hydrodynamics and mixing characteristics. AIChE Journal, 67, e17238.
• Mondal, S., & Majumder, S. K. (2022). Mixing characteristics for single and air–water two-phase flows in multichannel-based miniaturized fixed-bed devices. AIChE Journal, 68(4), e17594.

A. Enhanced Oil Recovery (EOR), Surfactants and Interfacial Phenomena

• Machale, J., Majumder, S. K., Ghosh, P., & Sen, T. K. (2019). Development of a novel biosurfactant for enhanced oil recovery and its effect on the rheological properties of polymer. Fuel, 257, 116067. https://doi.org/10.1016/j.fuel.2019.116067
• Machale, J., Majumder, S. K., Ghosh, P., & Sen, T. K. (2019). Role of chemical additives and their rheological properties in enhanced oil recovery. Reviews in Chemical Engineering. https://doi.org/10.1515/revce-2018-0033
• Machale, J., Majumder, S. K., Ghosh, P., Sen, T. K., & Saeedi, A. (2020). Impact of mineralogy, salinity, and temperature on the adsorption characteristics of a novel natural surfactant for enhanced oil recovery. Chemical Engineering Communications, 209(2), 143–157. https://doi.org/10.1080/00986445.2020.1848820
• Machale, J., Al-Bayati, D., Almobarak, M., Ghasemi, M., Saeedi, A., Sen, T., Majumder, S. K., & Ghosh, P. (2021). Interfacial, emulsifying, and rheological properties of an additive of a natural surfactant and polymer, and its performance assessment for application in enhanced oil recovery. Energy & Fuels, 35(6), 4823–4834. https://doi.org/10.1021/acs.energyfuels.0c04007
• Machale, J., Al-Bayati, D., Almobarak, M., Ghasemi, M., Saeedi, A., Sen, T., Majumder, S. K., & Ghosh, P. (2023). The role of adsorption of a natural surfactant at oil–water interface in enhanced oil recovery: Interfacial rheology, structural, and emulsifying analyses. Chemical Engineering Communications, 210(12), 1–15. https://doi.org/10.1080/00986445.2023.2196415
• Dubey, S., & Majumder, S. K. (2023). Characterization and evaluation of the rheological behavior of a natural surfactant (Acacia concinna). Industrial & Engineering Chemistry Research, 62(43), 18047–18062. https://doi.org/10.1021/acs.iecr.3c02773
• Dubey, S., & Majumder, S. K. (2026). Synergistic application of a plant-derived surfactant and CO₂ foam for enhanced oil recovery: Linking interfacial phenomena to core-scale performance. Energy & Fuels. https://doi.org/10.1021/acs.energyfuels.6c00630

B. Carbon Dioxide Microbubble Technology and Carbon Management

• Dubey, S., & Majumder, S. K. (2024). Carbon dioxide (CO₂) microbubble suspension and stabilization for advancing tertiary oil recovery. Energy & Fuels, 38(12), 11330–11355. https://doi.org/10.1021/acs.energyfuels.4c01673
• Dubey, S., & Majumder, S. K. (2024). Stability analysis of CO₂ microbubble for CO₂ sequestration and mobility control in enhanced oil recovery. Chemical Engineering Journal, 500, 156595. https://doi.org/10.1016/j.cej.2024.156595
• Dubey, S., & Majumder, S. K. (2026). Synergistic application of a plant-derived surfactant and CO₂ foam for enhanced oil recovery: Linking interfacial phenomena to core-scale performance. Energy & Fuels. https://doi.org/10.1021/acs.energyfuels.6c00630

C. Gas Hydrates and Flow Assurance

• Patel, S., & Majumder, S. K. (2018). Prediction of transient pressure change during natural gas hydrate formation. Petroleum Science and Technology, 36(21), 1820–1828. https://doi.org/10.1080/10916466.2018.1514410
• Dhir, K., & Majumder, S. K. (2018). Model of transient CO₂ gas hydrate particle size distribution at its equilibrium condition. Petroleum Science and Technology, 36(21), 1733–1740. https://doi.org/10.1080/10916466.2018.1509089
• Sangtam, B. T., & Majumder, S. K. (2018). A new empirical correlation for prediction of gas hydrate dissociation equilibrium. Petroleum Science and Technology, 36(18), 1432–1438. https://doi.org/10.1080/10916466.2018.1482332
• Sangtam, B. T., & Majumder, S. K. (2022). Prediction of organic and inorganic gas hydrate equilibrium conditions in the presence and absence of thermodynamic inhibitors. Petroleum Science and Technology, 42(10), 1175–1192. https://doi.org/10.1080/10916466.2022.2143803

D. Multiphase Oil–Water Flow and Pipeline Transport

• Dasari, A., Goshika, B. K., Majumder, S. K., & Mandal, T. K. (2015). Viscous oil–water flow through an inclined pipeline: Experimentation and prediction of flow patterns. Multiphase Science and Technology.
• Naidu, K. R., Mandal, T. K., & Majumder, S. K. (2015). Analysis of frictional pressure drop based on flow regimes of oil–water flow in pipeline. Journal of Scientific & Industrial Research, 74, 180–184.
• Naidu, K. R., Mandal, T. K., & Majumder, S. K. (2015). Hydrodynamics of oil–water two-component multiphase flow in pipeline. Journal of Engineering and Applied Sciences.
• Naidu, K. R., Mandal, T. K., & Majumder, S. K. (2015). Drag reduction of oil–water two-component viscous flow in pipeline. Research Journal of Applied Sciences.
• Deka, P., Naidu, K. R., Mandal, T. K., & Majumder, S. K. (2014). Flow pattern shifting and drag reduction in oil–water flow in pipe. International Journal of Research in Engineering & Technology, 22, 245–252.