- “Liquid distribution of MEA in random and structured packing in a square column” Energy Procedia, ask Volume 1, tadalafil Issue 1, February 2009, Pages 1155-1161,  GHGT-9: 9th International Conference on Greenhouse Gas Control Technologies, 16 – 20 November 2008, The Omni Shoreham Hotel; Washington DC. (Stephen Marcia, David deMontigny, Paitoon Tontiwachwuthikul)
- “Synthesis, solubilities, and cyclic capacities of amino alcohols for CO2 capture from flue gas streams” Energy Procedia, Volume 1, Issue 1, February 2009, Pages 1327-1334 GHGT-9: 9th International Conference on Greenhouse Gas Control Technologies, 16 – 20 November 2008, The Omni Shoreham Hotel; Washington DC.  (by Kreangkrai Maneeintr, Raphael O. Idem, Paitoon Tontiwachwuthikul, Andrew G.H. Wee)
- “Enhancement factor and kinetics of CO2 capture by MEA-methanol hybrid solvents”, Energy Procedia, Volume 1, Issue 1, February 2009, Pages 95-102 GHGT-9: 9th International Conference on Greenhouse Gas Control Technologies, 16 – 20 November 2008, The Omni Shoreham Hotel; Washington DC. (by Phairat Usubharatana, Paitoon Tontiwachwuthikul)
- “Corrosion in MEA units for CO2 capture: Pilot plant studies”, Energy Procedia, Volume 1, Issue 1, February 2009, Pages 791-797 GHGT-9: 9th International Conference on Greenhouse Gas Control Technologies, 16 – 20 November 2008, The Omni Shoreham Hotel; Washington DC. (by J. Kittel, R. Idem, D. Gelowitz, P. Tontiwachwuthikul, G. Parrain, A. Bonneau)
- “Evaluation of the Performance of Various Amine Based Solvents in an Optimized Multipurpose Technology Development Pilot Plant”, Energy Procedia, Volume 1, Issue 1, February 2009, Pages 1543-1548 GHGT-9: 9th International Conference on Greenhouse Gas Control Technologies, 16 – 20 November 2008, The Omni Shoreham Hotel; Washington DC.(by Raphael Idem, Don Gelowitz, Paitoon Tontiwachwuthikul)
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“Assessing Net and Gross Storage of CO2 in the Subsurface and the Implication for CO2 Credits”, paper at EIC Climate Change Conference 2006, organized by Engineering Institute of Canada and IEEE Canada, Ottawa (May 10-12, 2006) (with Suebsiri, J.; Wilson, M.; Tontiwachwuthikul, P.)
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“Mass Transfer of Carbon Dioxide in Hybrid Solvent MEA + Methanol + Water at Low and Medium Partial Pressure”, paper at EIC Climate Change Conference 2006, organized by Engineering Institute of Canada and IEEE Canada, Ottawa (May 10-12, 2006) (with P. Usubharatana, A. Veawab, A. Aroonwilas, Tontiwachwuthikul, P.)
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“Evaluation of the CO2 Capture performance of the University of Regina technology development plant and the Boundary Dam demonstration plant”, paper for oral presentation at the Seventh International Conference on Greenhouse Gas Control Technologies (GHGT7), Vancouver, September 6-9 (2004). (with Wilson M.; et al.)
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“Solubility of CO2, Methane and Ethane in Fourteen Promising Physical Solvents”, paper at the Seventh International Conference on Greenhouse Gas Control Technologies (GHGT7), Vancouver, September 6-9 (2004). (with A. Henni, et al.)
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“Absorption of CO2 Using Packed Columns and Membrane Contactors”, paper at the Seventh International Conference on Greenhouse Gas Control Technologies (GHGT7), Vancouver, September 6-9 (2004). (with D. De Montigny; et al.)
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“International Test Centre for CO2 Capture (ITC)”, paper at the Seventh International Conference on Greenhouse Gas Control Technologies (GHGT7), Vancouver, September 6-9 (2004). (with Wilson M.; et al.)
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“Performance and cost analysis for CO2 Capture from Flue Gas Streams: Absorption and Regeneration Aspects”, paper for oral presentation at the Sixth International Conference on Greenhouse Gas Control Technologies (GHGT6), Kyoto, Japan, October 1-4 (2002). (with Veawab, A.; et al.)
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“New Column Design Concept for CO2 Absorbers Fitted with Structured Packings”, paper for poster presentation at the Sixth International Conference on Greenhouse Gas Control Technologies (GHGT6), Kyoto, Japan, October 1-4 (2002). (with Aroonwilas, A.; Chakma, A.; Veawab, A)
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Wilson, M.; Tontiwachwuthikul, P.; Chakma, A.; Idem, R.; Veawab, A.; Aroonwilas, A.; Gelowitz, D. “The International Test Centre for Carbon Dioxide Capture (ITC)”, paper for poster presentation at the Sixth International Conference on Greenhouse Gas Control Technologies (GHGT6), Kyoto, Japan, October 1-4 (2002).
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Aroonwilas, A.; Veawab, A.; Chakma, A. and Tontiwachwuthikul, P. “Rigorous Design Model for CO2 Absorber Fitted with Structured Packing”, to be presented at the 233rd ACS National Meeting, ACS Division of Fuel Chemistry Symposium on CO2 Capture and Sequestration, Orlando, Florida April 7-11, 2002.
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Veawab, A.; Aroonwilas, A. and Tontiwachwuthikul, P. “CO2 Absorption Performance of Aqueous Alkanolamines in Packed Columns, to be presented at the 233rd ACS National Meeting, ACS Division of Fuel Chemistry Symposium on CO2 Capture and Sequestration, Orlando, Florida April 7-11, 2002.
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Aroonwilas, A.; Veawab, A.; Tontiwachwuthikul, P. and Chakma, A. “Liquid Irrigation-Based Column Design Approach for Efficient CO2 Capture”, presented at the 51st Canadian Chemical Engineering Conference, Halifax, Canada, October 14-17, 2001.
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Veawab, A.; Aroonwilas, A.; Chakma, A. and Tontiwachwuthikul, P. “Solvent Formulation for CO2 Separation from Flue Gas Streams” Proceedings of the First National Conference on Carbon Sequestration, Washington D.C., USA., May 14-17, 2001.
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“International Test Center for CO2 Capture”, the 4th International Conference on Greenhouse gas Control Technologies”, Cairs, Australia, August 2000. (with M. Wilson and A. Chakma).
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“CO2-MEA Absorption in Packed Columns Comprehensive Experimental Data and Modeling Results”, the 4th International Conference on Greenhouse gas Control Technologies”, Cairs, Australia, August 2000. (with A. Aboudheir and A. Chakma).
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“Economic and Cost Studies of Energy Efficient Solvent and Co-generation Process for CO2 Separation from Flue Gas Streams”, the 4th International Conference on Greenhouse gas Control Technologies”, Cairs, Australia, August 2000. (with R. Idem, et. al.)
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“A Glance at Solvent Stability Problem in CO2 Capture using Amine-treating Unit”, the 4th International Conference on Greenhouse gas Control Technologies”, Cairs, Australia, August 2000. (with Teeradat Supap, et. al.)
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Cheng, S., Chan, C.W., G.H. Huang, P. Tontiwachwuthikul, “An Application of Mixed Integer Linear Programming Model to Natural Gas Pipeline Industry”, Proceedings (CD) for 3rd International Conference on Engineering Design and Automation (EDA ’99), Vancouver B.C.. Aug 1-4, 1999, p. 695-702.
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Uraikul, V., Chan, C.W., Tontiwachwuthikul, P., “Development of an expert system for optimizing natural gas pipeline operations”, Proceedings (CD) for 3rd International Conference on Engineering Design and Automation (EDA ’99) Vancouver B.C. Aug 1-4, 1999, p. 687-694.
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Chan, C.W., Kritpiphat, W., Tontiwachwuthikul, P., “Development of an intelligent monitoring and control system for a municipal water distribution network”, published in Proceedings of IEEE Canadian Conference on Electrical and Computer Engineering (CD), Edmonton Canada, May 9-12, 1999.
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Sun, C.K., Uraikul, V., Chan, C.W., Tontiwachwuthikul, P., “An integrated expert system/operations research approach for natural gas pipeline operations optimization”, published in Proceedings for 1999 IEEE Canadian Conference on Electrical and Computer Engineering (CD), Edmonton Canada, May 9-12, 1999.
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Uraikul, V., Chan, C.W., Tontiwachwuthikul, P., “Hybrid intelligent system development: a case study for decision support of natural gas pipeline operations”, published in Proceedings for 1999 IEEE Canadian Conference on Electrical and Computer Engineering (CD), Edmonton Canada, May 9-12, 1999.
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“Corrosion Studies of Sterically-Hindered Amine for CO2 Separation Processes”, the 4th International Conference on Greenhouse gas Control Technologies”, Interlaken, Switzerland, August 1998. (with Amornvadee Veawab)
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“Mass Transfer Coefficients of Ultra-high Concentrated Monoethanolamine (MEA) Solutions for CO2 Separation in Packed Columns”, the 4th International Conference on Greenhouse gas Control Technologies”, Interlaken, Switzerland, August 1998. (with D. deMontigny, et. al.)
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“Influences of Liquid-Phase Operating Parameters on Mass Transfer Performances of High Efficiency Structured Packings for CO2 Absorption Separation”, the 4th International Conference on Greenhouse gas Control Technologies”, Interlaken, Switzerland, August 1998. (with Adisorn Aroonwilas, et. al.)
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“A Fuzzy Set Approach for Evaluating Environmental Risks at Petroleum Storage Sites”, Proceedings of the Sixth Saskatchewan Petroleum Conference, the Petroleum Society of CIM, Regina, Canada, October 1997. (with A. Chakma, G. Huang)
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“A Fuzzy Expert System for Optimizing pipeline operations”, IEEE Canadian Conference on Electrical and Computer Engineering (CCECE ‘97), May 15-18, 1997, St. John’s, Canada. (with C.K. Sun and C.W. Chan)
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“R & D Activities on High Efficiency CO2 Production Technologies at the University of Regina, Canada”, presented at the 6th International Workshop on Advanced Science and Technology Exchange, Edmonton, Alberta, June 19-21, 1996.
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“High Efficiency Packed Columns for Gas Processing”, Proceedings of the Sixth Saskatchewan Petroleum Conference, the Petroleum Society of CIM, Regina, Canada, October 1995. (with A. Aroonwilas)
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“Developing an Intelligent Monitoring and Control System of A Distribution Pipeline Network”, in Proceedings of the 5th International Conference on Advanced Science & Technology, Bangkok, Thailand, July 22 – 24, 1995. (with C.W. Chan, A. An, W. Kritpiphat and N. Cercone)
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“Optimization Techniques for Parameter Estimations: Case Studies in CO2 Separation Processes”, Proceedings of the Sixth Saskatchewan Petroleum Conference, the Petroleum Society of CIM, Regina, Canada, October 1995. (with J. Ji and W. Kritpiphat)
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“Intelligent Monitoring and Control System of a Pipeline Network”, Proceedings of the Sixth Saskatchewan Petroleum Conference, the Petroleum Society of CIM, Regina, Canada, October 1995. (with W. Kritpiphat, C.W. Chan, A. An and N. Cercone)
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“Applications of Neural Networks for Demand Predictions of a Pipeline System, Proceedings of Sixth Saskatchewan Petroleum Conference, Regina Canada, sponsored by The Petroleum Society of CIM, October 16-18, 1995, paper no. CIM 95-155. (with Lertpalangsunti and Chan)
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“Carbon Dioxide Production from Coal-fired Power Plants for Enhanced Oil Recovery in Saskatchewan”, Proceedings of the Sixth Saskatchewan Petroleum Conference, the Petroleum Society of CIM, Regina, Canada, October 1995. (with C.W. Chan, et al.)
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“Construction of an Intelligent System for Management and Control of a Water Distribution Network”, Proc of 13th Annual International Assoc. of Management Conference (Information Technology Management Group), Vancouver Canada, 2-6 August 1995, p.19-23. (with C.W. Chan, A. An, W. Kritpiphat and N. Cercone)
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“R&D Activities on High Efficiency CO2 Separation Processes for Enhanced Oil Recovery at University of Regina”, Proceedings of the Sixth Saskatchewan Petroleum Conference, the Petroleum Society of CIM, Regina, Canada, October 1995.
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“Object-Oriented Modeling and Simulation of an Expert System for Monitoring and Control of a Water Distribution System”, in Proceeding of 1994 International Conference on Object-Oriented Information Systems, London, United Kingdom, 19-21 December 1994. (with C.W. Chan, A. An and N. Cercone)
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“Methodologies for Designing Packed Acid Gas Absorbers with Chemical Reactions: A Review, in Proceedings of the 4th International Conference on Advanced Science & Technology Exchange, Bangkok, Thailand, June 30 – July 2, 1994. (with A. Meisen and C.J. Lim)
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“Decision Support System for Solvent Selection of CO2 Removal Systems”, Proceedings of International Conference on Expert Systems for Development, Asian Institute of Technology, Bangkok, Thailand, March 1994. (with C.W. Chan and N. Cercone)
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“Cogeneration Concepts for Recovering CO2 from Fossil-fuel Fired Power Plants”, Proceedings of the Fourth Petroleum Conference of the South Saskatchewan Section, the Petroleum Society of CIM and CANMET, Regina, Canada, October 1993. (with D. Gelowitz and W. Kritpiphat)
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“Object-Oriented Approach to Developing the Solvent Selection Advisory System for CO2 Removal Processes”, Proceedings of Expert Systems for the Process Industries Symposium, Ottawa, Canada, October 1993. (with C.W. Chan and N. Cercone)
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“Anaerobic Digestion and Energy Recovery from Municipal and Industrial Waste Systems”, Proceedings of the 11th Symposium on Engineering Applications of Mechanics, Regina, Canada, May 11-13, 1992, p.96-102. (with T. Viraraghavan)
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“Inferential Modeling Technique for Semantic Representation of Domain Knowledge”, Proceedings of the Fourth International Symposium on Artificial Intelligence, Cancun, Mexico, November 13-15, 1991, p.208-214. (with C.W. Chan, R.E. Jennings and N. Cercone)
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“Inferential Modeling Technique for Constructing Second Generation Knowledge Based Systems”, Proceedings of the Seventh International Conference on Data Engineering (sponsored by the IEEE Computer Society), Kobe, Japan, p.582-589, April 8-12, 1991. (with C.W. Chan and R.E. Jennings)
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“Modeling Gas Absorbers with Chemical Reactions Using a LOTUS 1-2-3 Spreadsheet” in Gas Separation Technology, E.F. Vansant and R. Dewolfs, Eds., Amsterdam, Elsevier, p.83-90, 1990. (with A. Meisen and C.J. Lim)