Prof. Madhumita B. Ray

Department of Chemical and Biochemical Engineering

PUBLICATIONS

Summary of Publications:

Chapters in Books: 5 (4 printed, 1 invited under submission)
Papers in Refereed International Journals: 70 (published) + 2 (accepted) + 7 (under review)
Papers in Refereed Conference Proceedings: 24
Presentations at Professional Meetings/Workshops and Others: 58
Technical Reports: 8
Abstracts and/or Papers Read: 33

Book Chapters

Numerical Simulation of Pneumatic and Cyclonic Dryers Using Computational Fluid Dynamics, Madhumita B. Ray and Tarek Jamaelddine, Mass Transfer, 2011, Edited by Jozef Markos, In-Tech open access publisher Mass Transfer / Book 1", ISBN 978-953-308-77-2, accepted, April, 2011.
Bio-gas production from Wastewater, B. Dhar and Madhumita B. Ray, 2011, Nova Science Publishers, Inc. (submission).
Advanced Oxidation Processes, Advanced Physicochemical Treatment Processes, Madhumita B. Ray, J. Paul Chen, Lawrence K. Wang, Simo Olavi Pehkonen, Handbook of Environmental Engineering, 2006, Volume 4, 459-478, Edited by Lawrence K. Wang, Yung-Tse Hung and Nazih K. Shammas, Humana Press, Inc. NJ, USA.
Applications of a Multi-objective Genetic Algorithm in Chemical and Environmental Engineering, Madhumita B. Ray in Applications of Multi-Objective Evolutionary Algorithms-Edited by Carlos A. Coello Coello and Gary B. Lamont, 2004, Chapter 14, pp 317-338, World Scientific.
Modeling the Fate of Chlorinated Dioxin Releases in Aquatic Environments, Mitchell T. Berg, Madhumita B. Ray, B. Reed- 478-486, Hazardous and Industrial Waste, 1999, Edited By Allen P. Davis. International Referred Journal Publications (in Print)

International Journals

Thermo-Oxidative Pretreatment of Municipal Waste Activated Sludge for Volatile Sulfur Compounds Removal and Enhanced Anaerobic Digestion, Bipro Ranjan Dhar, Elsayed Elbeshbishy, Hisham Hafez, George Nakhla, Madhumita B. Ray, Chemical Engineering Journal, 2011doi:10.1016/j.cej.2011.08.07.
Visible light active Fe doped TiO2 nanowires grown on Graphene using Supercritical CO2 Nasrin Farhangi, Rajib Roy Chowdhury, Yaocihuatl Medina-Gonzalez, Madhumita B. Ray and Paul A. Charpentier, Applied Catalysis B, August, 2011, doi:10.1016/j.apcatb.2011.08.012.
Modeling the Influence of Particulate Protein Size on Hydrolysis in Anaerobic Digestion, Saad Aldin, George Nakhla, and Madhumita B. Ray, Industrial Engineering Chemistry Research, DOI: 10.1021/ie200385e, 2nd August, 2011.
Catalytic Reaction in a Circulatory Fluidized Bed Downer: Ozone Decomposition, Dongbing Li, Jesse Zhu, Madhumita B. Ray, and Ajay Ray, Chemical Engineering Science, http://www.sciencedirect.com/science/article/pii/S000925091100404066 (2011) 4615–4623.
Simulating the Degradation of Odor Precursors in Primary and Waste Activated Sludge during Anaerobic Digestion, Saad Aldin, Fuzhou Tu, George Nakhla, and Madhumita B. Ray, Applied Biochemistry and Biotechnology, Appl Biochem Biotechnol (2011) 164:1292–1304
The Drying of Sludge in a Cyclone Dryer Using Computational Fluid Dynamics, Tarek J. Jamaleddine and Madhumita B. Ray, Drying Technology, 29 (3), 308-322, 2011.
Photodegradation of 17b Estradiol in Aquatic Solution under Solar Irradiation: Kinetics and Influencing Water Parameters, R. Roychowdhury, P. Charpentier and Madhumita B. Ray, Journal of Photochemistry and Photobiology A: Chemistry, 219, 67-75, 2011. doi:10.1016/j.jphotochem.2011.01.019.
Combination of Mechanical and Chemical Pretreatment for Waste Activated Sludge, Bipro Ranjan Dhar, George Nakhla, Madhumita B. Ray, Bioresource Technology, 102, 3776-3782, 2011.
The drying of sludge in a pneumatic dryer using computational fluid dynamics, Tarek Jamaleddine and Madhumita B. Ray, Drying Technology, 29(3), 308-322, 2011.
Oxidation of X-RAY Compound Ditrizoic acid by Ferrate (VI), G. Anquandah, Madhumita B. Ray, Abdullah Al-Abduly and V. K. Sharma, Environmental Technology, 32(3),261 - 267, 2011.
Impact of Ultrasonication of Hog Manure on Anaerobic Digestability, Ultrasonics Sonochemistry, Elsayed Elbeshbishy, Saad Aldin, Hisham Hafez, George Nakhla, Madhumita B. Ray, Ultrasonics Sonochemistry, 18, 164–171, 2011.
Modeling the Effect of Sonication on Biosolids Anaerobic Digestion, Saad Aldin, Elsayed Elbeshbishy; George Nakhla, and Madhumita B. Ray, Energy and Fuels, 24(9), 4703–4711, 2010.
Simulation of the Impact of SRT on Anaerobic Digestability of Ultrasonicated Hog Manure, Elsayed Elbeshbishy, Angel Nakevski, Hisham Hafez, Madhumita B. Ray, G. Nakhla, Energies 3(5), 974-988, 2010.
Numerical Simulation of a Pneumatic Dryer Using Computational Fluid Dynamics, T. Jamaleddine and Madhumita B. Ray, Industrial Engineering Chemistry Research, 49 (12), 5900–5910, 2010.
Photodegradation of Estrone in Solar Irradiation, R. Roychowdhury, P. Charpentier and Madhumita B. Ray, Industrial Engineering Chemistry Research, 49(15), 6923–6930, 2010.
Application of Computational Fluid Dynamics for Simulation of Drying Processes: a Review; T. Jamaleddine and Madhumita B. Ray, Drying Technology, 27(2), 28-35, 2010.
Photocatalytic Oxidation of Paracetamol: Dominant Reactants, Intermediates, and Reaction Mechanisms, Yang, L., Yu, Liya, Madhumita B. Ray, Environmental Science and Technology, 43 (2), 460–465, 2009.
Photocatalytic Inactivation of Airborne Bacteria in a Continuous Flow Reactor, A. Pal, S. Pehkonen, L. Yu and Madhumita B. Ray, Industrial Engineering Chemistry Research, 47, 7580–7585, 2008.
Degradation of Paracetamol in Aqueous Solutions by TiO2 photocatalysis, Yang, L., L. Yu, and Madhumita B. Ray, Water Research, 42(13), 3480-3488, 2008.
Photooxidation of Dicarboxylic Acids. Part I: Effects of Inorganic Ions on Degradation of Azelaic Acid, Yang, L., Madhumita B. Ray, Yu, L.E., Atmospheric Environment, 42, 855-866, 2008.
Photooxidation of Dicarboxylic Acids. Part II: Kinetics, Intermediates, and Field Observations, Yang, L., Madhumita B. Ray, Yu, L.E., Atmospheric Environment, 42, 867-879, 2008.
Performance Improvement of TiO2 Supported on Adsorbents for Photocatalytic Degradation of MEK in Air, Pavan Kumar Puttamraju and Madhumita B. Ray, International Journal for Environmental Technology Management, 9(1), 105-124, 2008.
Potential Photooxidation Pathways of Dicarboxylic Acids in Atmospheric Droplets, L. M. Yang, L.E. Yu and Madhumita B. Ray, American Journal of Environmental Sciences, 4 (5), 462-466, 2008.
Advanced oxidation of orange II using TiO2 supported on porous adsorbents: the Role of pH, H2O2 and O3, Gang Li, Xiusong Zhao, Madhumita B. Ray, Separation and Purification Technology, 55, 91–97, 2007.
Inactivation of Gram-positive and Gram-negative Bacteria using TiO2 and Fluorescent Light, Amrita Pal, Simo O. Pehkonen, Liya E. Yu, and Madhumita B. Ray, Journal of Photobiology and Photochemistry, 186 (2-3), 335-341, 2007.
Evaluation of Source Model Coupled Computational Fluid Dynamics (CFD) Simulation of the Dispersion of Airborne Contaminants in a Work Environment, S. Salim, S. Viswanathan and Madhumita B. Ray, Journal of Occupational and Environmental Hygiene, 3, 684-693, 2006.
Performance Evaluation of Light Emission Models in Light Attenuating Media, Yang Q, S.O Pehkonen and Madhumita B. Ray, Ozone Science Engineering, 27, 459-467, 2005.
TiO2 Mediated Inactivation of Bioaerosols, Amrita Pal, Xu Min, Liya E Yu, Simo O. Pehkonen and Madhumita B. Ray, International Journal of Chemical Reactor Engineering, 3 (A45). http://www.bepress.com/ijcre/vol3/A45, 2005.
Simulation of Radiation Field in Multilamp Photoreactor Using the LSDE Model, Yang Q, S.O Pehkonen and Madhumita B. Ray, Canadian Journal of Chemical Engineering, 83, 705-711, 2005.
Measurement of Drop Size and Distribution in an Annular Two-Phase, Two Component Flow Occurring in a Venturi Scrubber, Shekar Viswanathan, D. S. Lim and Madhumita B. Ray, Industrial and Engineering Chemistry Research, 44, 7458-7468, 2005.
Light Distribution Field in Catalytic Suspension within an Annular Photoreactor, Quan Yang, Pei Ling Ang, Madhumita B. Ray, Simo O. Pehkonen, Chemical Engineering Science, 60, 5255-5268, 2005.
Dilute Gas-Solid Flows in Horizontal and Vertical Bends, Tai Yong Quek, Chi-Hwa Wang and Madhumita B. Ray, Industrial and Engineering Chemistry Research, 44, 2301-2315, 2005.
A light Distribution Model for an Annular Reactor with a Cylindrical Reflector, Yang Quan, S. Pehkonen and Madhumita B. Ray, Industrial and Engineering Chemistry Research, 44, 3471-3479, 2005.
Heat Transfer in Multiple Turbulent Slot Impinging Jets of Gas-Particle Suspensions, Yu Ling Shi, A.S. Mujumdar and Madhumita B. Ray, Numerical Heat Transfer, Part A, 46, 1-18, 2004.
Sonochemical Decomposition of Volatile and Non-volatile Organic Compounds-A Comparative Study, M. Goel, H. Hongqiang, A.S. Mujumdar and Madhumita B. Ray, Water Research, 38 (19) 4247-4261, 2004.
Photocatalytic Degradation of Orange II by TiO2 Catalysts Supported on Adsorbents, A. Bhattacharyya, S. Kawi and Madhumita B. Ray, Catalysis Today, 98(3), 431-439, 2004.
Modeling of Gas Phase Photodegradation of Chlorinated VOCs, Chen, F., S. O. Pehkonen, S.O. and Madhumita B. Ray, Journal of the Air & Waste Management Association, 54, 1281-1292, 2004.
Pneumatic Transport of Granular Materials through a 900 Sharp Bend. Lee, L.Y, T.Y. Quek, Madhumita B. Ray and C.H.Wang, Chemical Engineering Science, 59, 4637-4651, 2004.
Evaluation of Three Different Lamp Emission Models Using Novel Application of Potassium Ferrioxalate Actinometry, Yang Quan, S. Pehkonen and Madhumita B. Ray, Industrial and Engineering Chemistry Research, 43, 948-955, 2004.
Effect of Large Temperature Difference on Impingement Heat Transfer under a Round Turbulent Jet, Yu Ling Shi, A.S. Mujumdar and Madhumita B. Ray, International Communications in Heat and Mass Transfer, 31(2), 251-260, 2004.
Numerical Study on the Effect of Cross-Flow on Turbulent Flow and Heat Transfer Characteristics under Normal and Oblique Semi-Confined Impinging Slot Jets. Y. Shi, Madhumita B. Ray and A.S. Mujumdar, Drying Technology, 21(10), 1923-1939, 2003.
Parametric Study of Heat Transfer in Turbulent Gas-Solid Flow in Multiple Impinging Jets, Yu Ling Shi, A.S. Mujumdar and Madhumita B. Ray, Industrial and Engineering Chemistry Research, 42, 6223-6231, 2003.
Modeling of Electrostatic Spray Behavior in the Rectangular Throat of Pease-Anthony Venturi Scrubber, H. T. Yang, S. Viswanathan, W. Balachandran and Madhumita B. Ray, Environmental Science & Technology, 37(11), 2547-2555, 2003.
Effects of Prandtl Number on Impinging Jet Heat Transfer Under a Semi-Confined Laminar Slot Jet, Shi, Y., Madhumita B. Ray and A.S. Mujumdar, International Communications in Heat and Mass Transfer, 30(4), 455-464, 2003.
Multi-Objective Optimization of Venturi Scrubbers Using a Three-dimensional Model For Collection Efficiency- G. Ravi, S. Viswanathan, S.K. Gupta and Madhumita B. Ray, Journal of Chemical Technology and Biotechnology, 78 (2-3), 308-313, 2003.
Modelling of Electrostatic Spray in Venturi Scrubber- H. T. Yang, S. Viswanathan, W. Balachandran and Madhumita B. Ray, Journal of Chemical Technology and Biotechnology, 78(2-3), 181-186, 2003.
Effects of Prandtl Number on Impinging Jet Heat Transfer Under a Semi-Confined Turbulent Slot Jet, Shi, Y., Madhumita B. Ray and A.S. Mujumdar, International Communications in Heat and Mass Transfer, Vol. 29. No. 7, 929-938, 2002.
Effect of Large Temperature Differences on Local Nusselt Number under Turbulent Slot Impingement Jet, Yuling Shi, Madhumita B. Ray, and A.S. Mujumdar, Drying Technology, 20(9), 1803-1825, 2002.
Computational Study of Impingement Heat Transfer under a Turbulent Slot Jet, Yuling, S, Madhumita B. Ray and A.S. Mujumdar, Industrial and Engineering Chemistry Research, 41, (18), 4643-4651, 2002.
Kinetics and Mechanisms of UV-photodegradation of Chlorinated Organics in the Gas Phase, Chen F., S. O. Pehkonen and Madhumita B. Ray, Water Research, 36(17), 4203-4214, 2002.
Optimization of Venturi Scrubbers Using Genetic Algorithm, G. Ravi, S. K. Gupta, S. Viswanathan and Madhumita B. Ray, Industrial and Engineering Chemistry Research, 41, 2988-3002, 2002.
Deposition of a Fine Powder in Horizontal Pipelines and Bends, R. J. Reuvekamp, Madhumita B. Ray and A. C. Hoffmann, Chemical Engineering Communication, 189(6), 849-864, 2002.
Introducing Designs of Post-Cyclone Maximising the Collection Efficiency, W. Zhao, A.S. Mujumdar and Madhumita B. Ray, Canadian Journal of Chemical Engineering, 79(5), 708-716, 2001.
Recycling the Flow of Post-Cyclone to Increase the Efficiency of Reverse Flow Cyclone, Li Qi and Madhumita B. Ray, Journal of Chemical Engineering of Japan, 34(3), 540-544, 2001.
Modelling and Monte Carlo Simulation of TCDD Transport in a River, B. S. Giri, I. A. Karimi, and Madhumita B. Ray, Water Research, 35(5), 1263-1279, 2001.
Multiobjective Optimization of Cyclone Separators Using Genetic Algorithm, G. Ravi, Santosh K. Gupta and Madhumita B. Ray, Industrial and Engineering Chemistry Research, Vol. 39, Issue 11, 4272-4286, 2000.
Photodegradation of the Volatile Organic Compounds in the Gas Phase: A Review, Madhumita B. Ray, Developments in Chemical Engineering and Mineral Processing. 8 (5-6), 405-439, 2000.
Development of a Post Cyclone to Improve the Efficiency of Reverse Flow Cyclones, Y. M. Jo, C. Tien and Madhumita B. Ray, Powder Technology, 113 (1-2), 97-108, 2000.
Application of Ultraviolet Photooxidation to Remove Organic Pollutants in the Gas Phase, Ji Hong Wang and Madhumita B. Ray, Separation and Purification Technology, 19, 11-20, 2000.
Performance of Different Analytical Methods in Evaluating Grade Efficiency of Centrifugal Separators, Madhumita B. Ray, Rene Postma, and Alex C. Hoffmann, 31 (5), 563-581, Journal of Aerosol Science, 2000.
On the Shape of Grade Efficiency Curves Computed for Centrifugal Dedusters by CFD with Lagrangian Particle Tracking, Alex C. Hoffmann, A. Berrino and Madhumita B. Ray, AIChE symposium series, 95 (321), 13-17, 1999.
Pneumatic Transportation of Fine Particles in Horizontal Pipelines, Y.M. Jo and Madhumita B. Ray, Korean Journal of Industrial and Engineering Chemistry, 5 (1), 32-39, 1999.
Simulation of Gas Flow Pattern in Cyclone Separator with a Secondary Device, K.V. Rao and Madhumita B. Ray, Journal of Institute of Engineers Singapore, 38(3), 28-33, 1998.
Improving the Removal Efficiency of Industrial-Scale Cyclones for Particles Smaller than Five Micrometre, Madhumita B. Ray, P.E. Luning, A.C. Hoffmann, A. Plomp, and M. I. L Beumer, International Journal of Mineral Processing, 53, 39-47, 1998.
Post Cyclone (PoC): An Innovative Way to Reduce the Emission of Fines from Industrial Cyclones, Madhumita B. Ray, P.E. Luning, A.C. Hoffmann, A. Plomp, and M. I. L Beumer, Industrial and Engineering Chemistry Research, 36, 2766-2774, 1997.
Ultraviolet Photooxidation for the Destruction of VOCs in Air, Madhumita Bhowmick and M. J. Semmens, Water Research, 28 (11), 2407-2416, 1994.
Batch Studies on a Closed Loop Air Stripping Process, Madhumita Bhowmick and M. J. Semmens, Water Research, 28 (9), 2011-2019, 1994.
Laboratory Scale Testing of a Continuous CLAS Process, Madhumita Bhowmick and M J. Semmens, American Water Works Association (AWWA) Journal, 86 (8), 86-96, 1994.
Deactivation Kinetics of Platinum- Rhenium Reforming Catalyst Accompanying the Dehydrogenation of Methylcyclohexane, A. K. Pal, Madhumita Bhowmick and R. D. Srivastava, Industrial and Engineering Chemistry Process Design and Development, 25, 236-241, 1986.

International Refereed Journal Publications – Submitted

Removal of Ibuprofen and 4-Isobutylacetophenone using hollow fibre membrane contactor, Nicia Williams, Madhumita B. Ray, and Hassan G. Gomaa, submitted to Separation and Purification Technology, April, 2011.
A review of the cost-effective Technologies for Reuse of Municipal Waste Water: Anupam Agarwal, Bruce Xu, and Madhumita B. Ray, submitted to Reviews in Chemical Engineering, April, 2011.
Catalytic Reaction in a Circulating Fluidized Bed Riser: Ozone Decomposition, Dongbing Li, Ajay K Ray, Madhumita B. Ray and J. Zhu, submitted to Chemical Engineering and Technology, November, 2010.
A Comparative Study of Hydrodynamics in Circulating Fluidized Bed Riser and Downer- Dongbing Li, Ajay K Ray, Madhumita B. Ray and J. Zhu, submitted to Powder Technology, December, 2010.
Techno-economic Evaluation of Sono-Thermal Pretreatment for Enhanced Anaerobic Digestion of Municipal Waste Activated Sludge, Bipro R Dhar, George Nakhla, Madhumita B. Ray, submitted to Bioresource Technology, December 2010.

Conference Papers (Peer Reviewed)

Photocatalytic Oxidation of Paracetamol in Water, L. Yang, L.E. Yu, and Madhumita B. Ray, The Second IASTED International Conference on Water Resources Management, WRM 2007, August 20-22, 2007, Honolulu, Hawaii, USA.
TiO2 Mediated Inactivation of Bioaerosols, A. Pal, L. Yu and Madhumita B. Ray, 1st international conference on Green Processing Engineering, GPE 2007, 24 - 26 April 2007, Toulouse – France.
Yu Ling Shi and Madhumita B. Ray., “Effect of Large Temperature Differences and Cross-flow on Local Nusselt Number under Turbulent Slot Impingement Jet, p 203-212, Topics in Heat &Mass Transfer, IWSID, 20-23 December, 2004, Mumbai, India.
A Parametric Study of Impingement Heat Transfer under a Slot jet using CFD, Shi Yuling, Madhumita B. Ray and A.S. Mujumdar, Penang, Malaysia, August 2002 (proceedings in CD Rom).
Multiobjective optimisation of Industrial Gas Cleaning Devices, G. Ravi, S. K. Gupta and Madhumita B. Ray Proceedings of the Indian Chemical Engineering Congress, Vol. II, p IT 25-28, December, 2000, Calcutta, India
Lab Scale Characterization of Soil-Vapor Extraction Process, Soh Tze Kwang, R. Stanforth and Madhumita B. Ray, Proceedings of the Indian Chemical Engineering Congress, Vol. II, p SH 51-54, December, 2000, Calcutta, India.
A Simple Method to Increase the Efficiency of Reverse Flow Cyclone, Liu Qi and Madhumita B. Ray, Proceedings of 8th APCChE Congress, Vol. III, p 1679-1682, 17-19 August, 1999, Seoul, South Korea.
Prediction of Particle Separation in Gas-Solid Separators Using CFD, Wennan Zhao and Madhumita B. Ray, Proceedings of 8th APCChE Congress, Vol. II, p 1065-1068, 17-19 August, 1999, Seoul, South Korea.
Application of Advanced Oxidation Process (AOP) to Remove Organic Pollutants in the Gas Phase, Ji Hong Wang and Madhumita B. Ray, Proceedings of 8th APCChE Congress, Vol.II, p 857-860, 17-19 August, 1999, Seoul, South Korea.
Performance Characterization of a Novel Gas-Solid Separator by Computational Fluid Dynamics (CFD), Zhao Wennan, A.S. Mujumdar, and Madhumita B. Ray, Proceedings of World Engineering Congress, p 153-158, 19-21 July, 1999, Kuala Lumpur, Malaysia.
Comparison of Costs of Different Processes for Control of Volatile Organic Compounds, Cheng Kok Leong and Madhumita B. Ray, Proceedings of World Engineering Congress, p 431-435, 19-21 July, 1999, Kuala Lumpur, Malaysia.
Scaling-Up of A Photoreactor for Treatment of Gas-Phase Effluent in A Closed-Loop Air Stripping Process, Cheng Kok Leong and Madhumita B. Ray, Proceedings of World Engineering Congress, p 421-425, 19-21 July, 1999, Kuala Lumpur, Malaysia.
On the Shape of Grade Efficiency Curves Computed for Centrifugal Dedusters by CFD with Lagrangian Particle Tracking, Alex C. Hoffmann, A. Berrino and Madhumita B. Ray, Advanced Technologies for Particle Processing, Volume II, p 63-69, Proceedings of topical conference on particle-particle interaction, at AIChE annual meeting, 15-20 November, 1998, Miami Beach, Florida, USA.
Application of Post-Cyclone to Reduce the Emission of Reverse Flow Cyclone, Y. M. Jo and Madhumita B. Ray, Proceedings of the 2nd Asia Pacific Conference on Sustainable Energy and Environmental Technology, 14-17 June, Gold Coast, Australia, p 155-160, 1998.
Dust Collection by Post-Cyclone (PoC) to Reduce the Emission of Reverse flow Cyclone, Y. M. Jo and Madhumita B. Ray, Proceedings of the Environmental Strategies for the 21st Century, 8-10 April, Singapore, p 521-526, 1998.
Numerical Simulation of Swirl Flow in Cyclone Separator with an Auxiliary Device, K. R. Venkata and Madhumita B. Ray, Proceedings of the Environmental Strategies for the 21st Century, 8-10 April, Singapore, p293-298, 1998.
Comparison of Different Analytical Methods in Predicting the Efficiency of Gas-Solid Separators, A. C. Hoffmann, R. Postma, A. Plomp and Madhumita B. Ray, Proceedings of PARTEC, 4th European Symposium for Separation of Particles from Gases, Nurnberg, Germany, 10-12 March, p 35-44, 1998.
Numerical Simulations of the Swirl Flow Pattern and Collection Efficiencies in Gas-Solid Separators, Madhumita B. Ray, C. Tien, A.C. Hoffmann, and M. I. L Beumer, Proceedings of the Asia-Pacific Conference on Sustainable Energy and Environmental Technology, Singapore, p290-297, 1996.
Modelling the Fate of Chlorinated Dioxin Releases into Aquatic Environments, M. T. Berg, Madhumita Bhowmick and B. E. Reed, Proceedings of 25th Mid-Atlantic Hazardous Waste Conference, Baltimore, USA, July, p 478- 487, 1993.
A Novel Closed Loop Air Stripping Process, Madhumita Bhowmick and M. J. Semmens, Proceedings of 25th Mid-Atlantic Hazardous Waste Conference, Baltimore, USA, July, p 136-145, 1993.

Conference Presentations

Adsorptive Performance of Yeast Cells to Remove Heavy Metals from Waste Water, S. Amirnia, A. Margaritis, and Madhumita B. Ray, Water Environment Association of Ontario, April 10-12, Toronto, ON, Canada.
Efficiency of Pb(II) Removal from Contaminated Waters by Yeast Species Saccharomyces cerevisiae, S. Amirnia, Madhumita B. Ray and A. Margaritis, 25th Annual Environmental Sciences & Engineering Conference 2011, Cornwall, ON, Canada.
Solar Degradation of E1 and E2 in Water- Rajib Roy Chowdhury, Paul Charpentier, Madhumita B. Ray - PACIFICHEM, 2010, 15-20 December, Honolulu, USA.
Combination of Ultrasound & Thermal Pretreatment for Sludge Solubilization and Enhanced Anaerobic Digestion, B. Dhar, G. Nakhla, and Madhumita B. Ray, Annual Conference of AIChE, November 7-12, 2010, Salt Lake City, UT, USA.
Photodegradation of Estrone and Estradiol under Solar Irradiation, R. Roychowdhury, P. Charpentier, and Madhumita B. Ray, 60 Canadian Chemical Engineering Conference, October 24-27, 2010, Saskatoon, Canada.
Pretreatment of Waste Activated Sludge for Precursors Control, B. Dhar, G. Nakhla and Madhumita B. Ray, 60 Canadian Chemical Engineering Conference, October 24-27, 2010, Saskatoon, Canada.
Impact of Ultrasonication of Hog Manure on Anaerobic Digestibility, E. Elbeshbishy, S. Aldin, G. Nakhla and Madhumita B. Ray, Annual Conference of AIChE, November 8-13, 2009, Nashville, Tennessee, USA.
Viability of Ultrasonication for Pre-Treatment of Biosolids, S. Aldin, E. Elbeshbishy, G. Nakhla, Madhumita B. Ray, WEFTEC 2009, October 10-14, Orlando, USA.
The effect of Ultrasonication on Primary and Secondary Sludge Prior to Anaerobic Digestion, Aldin, Saad, S. Elbeshbishy, G. Nakhla, and Madhumita B. Ray, 8th World Congress of Chemical Engineering, August 23-27, 2009, Montreal, Canada.
Numerical Simulation of a Pneumatic Dryer using Computational Fluid Dynamics, Tarek Jamaleddine and Madhumita B. Ray, August 23-27, 2009, Montreal, Canada.
Design and Optimization of Novel Hydrocyclone using a CFD model, Xu, P., Madhumita B. Ray, Mujumdar, A., and Yu, B., August 23-27, 2009, Montreal, Canada.
Numerical Simulation of Pneumatic Drying using Computational Fluid Dynamics, Tarek Jamaelddine and Madhumita B Ray, Annual Conference of AIChE, 19-22 November, 2008, Philadelphia, USA.
Pretreatment of Primary Sludge Prior to Anaerobic Digestion- Saad Aldin, Sayed Elbeshbishy, Fuzhou Tu, George Nakhla, Madhumita B. Ray, Annual Conference of AIChE, 19-22 November, 2008, Philadelphia, USA.
Advanced Oxidation of Paracetamol in Water, Yang Liming, Liya E. Yu, and Madhumita B. Ray, Annual Conference of Canadian Chemical Engineering Conference, October 19-22, 2008, Ottawa, Canada.
Photocatalytic Degradation of Paracetamol in Water, Y. Liming, L. Yu and Madhumita B. Ray, accepted for presentation, Water Resources Management (WRM) 2007, Honolulu, Hawaii, USA, August 20 – 22, 2007.
Bacterial Inactivation using TiO2 and Fluorescent Light, A. Pal, L. Yu and Madhumita B. Ray, INRET, 24-26 July, Putrajaya, Malaysia, 2006.
Atmospheric Oxidation of Azelaic Acid- Madhumita B. Ray, ERW Earth Day Colloquium, UWO, London, Ontario, Canada April 21, 2006.
Light Distribution in Annular Heterogeneous Reactor, Y. Quan and Madhumita B. Ray, 55th Canadian Chemical Engineering Conference, Toronto, Canada, October 16-19, 2005.
Performance Improvement of TiO2 supported on Adsorbents, A. Bhattacharya and Madhumita B. Ray, 55th Canadian Chemical Engineering Conference, Toronto, Canada, October 16-19, 2005.
Photochemical oxidation of ambient dicarbonate acids, Yang, L.M., Madhumita B. Ray. and Yu, L.E., “23rd Annual AAAR Conference, Atlanta, Georgia, United States, 4-8 October 2004.
Pneumatic transport of granular materials through a bend”, The 9th Asian Conference on Fluidized-Bed and Three-Phase Reactors, Quek, T.Y., Madhumita B. Ray., Wang, C.H., Taipei, Taiwan, 21-24 November 2004.
Pneumatic Transport of Granular Materials Through a 90O Bend, Lai Yeng Lee, Tai Yong Quek, Rensheng Deng, Madhumita B. Ray, and Chi-Hwa Wang, Fluidization XI, Present and Future for Fluidization Engineering, May 9-14, 2004, Ischia (Naples), Italy.
Photocatalytic Degradation of Organic Compounds by TiO2 Supported on Adsorbents by A Bhattacharyya, S Kawi and Madhumita B. Ray; San Francisco, USA, November 2003.
Application of Genetic Algorithm in Environmental Engineering, Madhumita B. Ray and S. Viswanathan, Computer Science and Its applications, San Diego, USA, July 1-2, 2003.
Comparison of Light Distribution Models and Their Applications in Photoreactor Design, Yang Quan, S.O. Pehkonen, Madhumita B. Ray, Christchurch, New Zealand, 29 September -3 October, 2002.
Effects of Prandtl Number on Impinging Jet Heat Transfer under a Semi-Confined Turbulent Slot Jet, Shi Yuling, Madhumita B. Ray, A. S. Mujumdar, 9th APCChE Congress and CHEMECA, Christchurch, New Zealand, 29 September -3 October, 2002.
Effect of cross-flow on Turbulent Flow and Heat Transfer Characteristics under Normal and Oblique Semi-Confined Impinging Slot Jets, Shi Yuling, Madhumita B. Ray, A. S. Mujumdar, 9th APCChE Congress and CHEMECA, Christchurch, New Zealand, 29 September -3 October, 2002.
Effect of Temperature Differences on Local Nusselt Number under Turbulent Slot Jets, Shi Yuling, Madhumita B. Ray, A.S. Mujumdar, 13th International Drying Symposium, Beijing, P. R. China, 27-30 August 2002.
Modelling of Electrostatic Spray in Venturi Scrubber, H. T. Yang, S. Viswanathan, W. Balachandran and Madhumita B. Ray, Process Innovation and Process Intensification, Edinburgh, Scotland, 8-13 September, 2002.
Multiobjective Optimisation of Venturi Scrubbers Using a 3-D model for Collection Efficiency, G. Ravi, S.K. Gupta, S. Viswanathan, and Madhumita B. Ray, Process Innovation and Process Intensification, Edinburgh, Scotland, 8-13 September, 2002.
Mechanisms of UV-Photooxidation of Chlorinated VOCs in the Gas Phase, Chen, F, Pehkonen, S. O. and Madhumita B. Ray., 7th International Conference on Advanced Oxidation Technologies for Water and Air Remediation, Niagara Falls, Ontario, Canada, 25-29 June 2001.
Evaluation of the Effect of Moisture on the Adsorption of Volatile Organics on Activated Carbon, Foong, K. L, M. P. Srinivason and Madhumita B. Ray. Regional Symposium on Chemical Engineering (RSCE), Singapore, 11-13 December, 2000.
Effluent Treatment From Soil-Vapor Extraction by UV-Photooxidation, Chen Feiyan, S. Pehkonen, and Madhumita B. Ray, Regional Symposium on Chemical Engineering (RSCE), Singapore, 11-13 December, 2000.
Designing of Photoreactors for the degradation of gas-phase organics, Chin. P and Madhumita B. Ray, CHISA 2000, Prague, Czech Republic, 27-31 August, 2000.
Modeling and Monte Carlo Simulation of TCDD transport in a river, B. S. Giri, Karimi, I. A. and Madhumita B. Ray, CHISA 2000, Prague, Czech Republic, 27-31 August, 2000.
Optimization of gas cleaning devices using non-dominated sorting genetic algorithm, G. Ravi, S.K. Gupta, S. Viswanathan and Madhumita B. Ray, CHISA 2000, Prague, Czech Republic, 27-31 August, 2000.
Design Optimization of Cyclone Separators Using Non-dominated Sorting Genetic Algorithm, G. Ravi, S.K. Gupta and Madhumita B. Ray, CHEMECA 2000, Perth Australia, 9-12 July, 2000.
Characterization and Modeling of the Off-Gas Treatment from Soil-Vapors Extraction, Lee, K. L., Karimi, I. A. and Madhumita B. Ray., 7th International Conference on Advanced Oxidation Technologies for Water and Air Remediation, Niagara Falls, Ontario, Canada, 25-29 June 2001.
Effect of conduit characteristics on the deposition of various powders in bends, R. J. Reuvekamp, A.C.Hoffmann, and Madhumita B. Ray, Annual meeting of American Institute of Chemical Engineers, Dallas, Texas, USA. 31 October - 5 November, 1999.

Most Significant Contributions to Research and/or to Practical Applications:

My research can be categorized in two broad areas: (i) Advanced treatment technologies for waste treatment, and (ii) environmental modelling. All my contributions shown below have a direct bearing on the reduction of environment pollution or understanding the fate processes of the pollutants in natural environment. I consider the following as some of my significant contributions in the last 6 years.

(1) Advanced Treatment Technologies

4 significant publications: (i) Inactivation of Gram-positive and Gram-negative Bacteria using TiO2 and Fluorescent Light , (ii) Photocatalytic Degradation of Orange II by TiO2 Catalysts Supported on Adsorbents , (iii) Photocatalytic Oxidation of Paracetamol: Dominant Reactants, Intermediates, and Reaction Mechanisms , and (iv) Impact of Ultrasonication of Hog Manure on Anaerobic Digestability . These1-3are pioneering research showing novel applications of TiO2, a very useful photocatalyst and advanced oxidation processes for environmental remediation. The first work1 demonstrates that significant removal of bioaerosol can be achieved using indoor lighting and a thin layer of TiO2; the results can be applied for designing sanitary surfaces for hospital, food processing industry or other clean room applications; At present, the process is used in a project funded by Ontario Centres for Excellence (OCE), Vive-Nano, and Nutech Group of Industries to develop a comprehensive indoor air cleaner to be used in HVAC systems. In the other work, we conduct a thorough analysis to improve the surface area and subsequent improvement in adsorption of organics by TiO2. These catalysts can be used successfully for the continuous removal of organic pollutants from both air and water at a significantly lower cost than the traditional photocatalysis and adsorption processes. The recent work3 demonstrates comprehensive methods to determine photochemical reaction pathways relating hydroxyl radical, electron/hole, and superoxide radicals involved in photocatalysis; the analysis is valuable for scaling up of the process, and shows our ability to detect, quantify and removal of micropollutants in water. Ultrasonication4, an advanced oxidation process by which hydroxyl radicals are produced was used to pretreat anaerobic sludge prior to digestion to improve biogas production, odor removal, and sludge dewatering. A series of comprehensive study in collaboration with Trojan Technologies, Inc. was conducted for primary, waste activated sludge, and hog manure with detail cost analysis, modelling of anaerobic digestion with improved kinetic constants indicating the optimum pretreatment processes.

(2) Environmental Modelling

3 significant publications: (i) Application of Computational Fluid Dynamics for Simulation of Drying Processes: a Review, (ii) Numerical Simulation of a Pneumatic Dryer Using Computational Fluid Dynamics, and (iii) Modeling the Effect of Sonication on Biosolids Anaerobic Digestion . In environmental modeling, I use both traditional approaches based on first principles, kinetics and equilibrium processes, as well as computational fluid dynamics (CFD). The review5 on numerical simulation methods for multi-phase drying is a pioneering work critically analyzing the existing multi-phase CFD modeling approaches. This work provides considerable insight to the modellers in the field; the follow up work6 demonstrates a few successful models that can be applied for gas-solid drying, specifically for the drying of municipal sludge. The last work7 demonstrates the use of modified kinetic constants due to ultrasonic pretreatment of anaerobic sludge in traditional anaerobic digestion model and its sensitivity to relevant pretreatment parameters. All these work 5-7 advanced the existing knowledge significantly and generated valuable information for practical application in industry.

Citation Analysis (September 13, 2011 based on Scopus database)

Total Citations: 624
Citations since 2007: 450
h-index:15

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