People


Graham Gagnon - Faculty

Dr. Gagnon’s teaching responsibilities include courses related to water and wastewater treatment, solid waste management, and environmental systems analysis. His general research interests are biological treatment processes, optimization of water treatment processes, and biofilm kinetics. Dr. Gagnon has been involved with research projects involving bacterial regrowth in drinking water distribution systems, optimization coagulation for improved ozone disinfection, nitrification in drinking water, and controlling the formation of disinfectant by-products. Other related research areas that are of interest to Dr. Gagnon include remediation of petroleum waste sites and environmental risk assessment. Dr. Gagnon is a member of AWWA, WEF, AEESP and IWA.

Sample Journal Publications

Krkosek, W.K., S.J. Payne and G.A. Gagnon.  2014.  Removal of acidic pharmaceuticals within a nitrifying recirculating biofilter. J. Hazard Materials.273: 85-93

Mortula, M. M., & G. A. Gagnon. 2014. Small domestic wastewater treatment using waste materials. Int. J. Environ. Tech. Manag. 17(1): 30-43.

Krkosek, W.H., S. Peldszus, P.M Huck and G.A. Gagnon. 2014. Formation kinetics of gemfibrozil chlorination reaction products: Analysis and application.  Water Environ. Research.  86(7): 654-662.

Granger, H., A.K. Stoddart and G.A. Gagnon.  2014.  Direct biofiltration for manganese removal from surface water.  ASCE – J. Environmental Engrg.  140(4): 04014006.

Mortula, M. and G.A. Gagnon. 2014. Small domestic wastewater treatment using waste materials.   Int. Journal of Environmental Technol. & Management.  17(1): 30-43.

Rahman, M.S. and G.A. Gagnon 2014. Bench-scale evaluation of drinking water treatment parameters on iron particles and water quality.  Water Research. 48(1): 137-147.

Rahman, M.S. and G.A. Gagnon 2014.  Bench-scale evaluation of ferrous iron oxidation kinetics in drinking water: Effect of corrosion control and dissolved organic matter.  J. Enviro Science & Health, Part A.  49(1): 1-9.

Rahman, M.S., M. Whalen and G.A. Gagnon. 2013.  Adsorption of dissolved organic matter (DOM) onto the synthetic iron pipe corrosion scales (goethite and magnetite): effect of pH. Chemical Engrg. Journal.  234: 149–157.

Pei, W.W., X. Xie, P. Ong, B.F. Trueman, M.A. McVicar, M.E. Walsh, and G.A. Gagnon 2013. Water Reclamation and Water Reuse.  Water Environ. Research 85 (10), 1308-1321.

Camara, E., K.R. Montreuil, A.K. Knowles, and G.A. Gagnon. 2013.  Role of the water main in a lead service line replacement program: a utility case study.  Journal AWWA. 105(8): E423-E431.

Rahman, M.S. and G.A. Gagnon 2013.  Bench scale evaluation of Fe(II) ions on haloacetic acids  (HAAs) formation in synthetic water. J. Water SRT - Aqua. 62(3) 155-168.

Woszczynski, M., J. Bergese and G.A. Gagnon. 2013. Comparison of chlorine and chloramines on lead release from copper pipe rigs. ASCE – J. Environ Engrg. 139(8) 1099-1107.  DOI 10.1061/(ASCE)EE.1943-7870.0000712 

Lamsal, R., M. Chaulk, E. Zevenhuizen, M.E. Walsh. and G.A. Gagnon. 2012. Integrating bench- and full-scale nanofiltration testing for two surface waters. J. Water SRT - AQUA.  61(5): 291-305.

Lamsal, R., K.R. Montreuil, F.C. Kent, M.E. Walsh and G.A. Gagnon. 2012. Characterization and removal of natural organic matter by an integrated membrane system. Desalination.  303: 12-16.

Lamsal, R., S.G. Harroun, C.L. Brosseau, and G.A. Gagnon. 2012. Use of surface enhanced raman spectroscopy for studying fouling on nanofiltration membrane. Separation & Purification Technol.  96: 7-11.

Goncalves, A.A. and G.A. Gagnon. 2012. Recent technologies for ballast water treatment.  Ozone. Sci & Engrg. 34(3): 174-195.

Knowles, A.K., J.D. MacKay and G.A. Gagnon. 2012. Pairing a pilot-plant to a direct filtration water treatment plant.  Can. J. Civil Engrg. 39(6): 689-700.

Kent, F.C., M. Graziani, K. Farahbakhsh and G.A. Gagnon. 2012.  A simple, low-cost flow rate measurement technique for bench-scale RO fouling experiments. Desalination. 284: 228-232.

Gagnon, G.A. 2012.  Distribution system water quality.  In: Speight, V. “Research Findings: What Utility Managers Need to Know”.  Journal AWWA. 104(1): 66-67.

Sample Conference Presentations

Kot, M., K Chandler, H Castleden, and G.A. Gagnon. 2014. Supporting small systems in the implementation of drinking water safety plans. Proc., 2014 AWWA Annual Conference & Exhibition. Boston, MA.

Stoddart, A.K. and G.A. Gagnon.  2014. Application of photoelectrochemical chemical oxygen demand to drinking water.  Proc., 2014 AWWA Annual Conference & Exhibition. Boston, MA.

MacIssac S. and G.A. Gagnon. 2014.  Advanced oxidation for geosmin removal in drinking water. Proc., 2014 AWWA Annual Conference & Exhibition. Boston, MA.

Trueman, B, J. Woods, and G.A. Gagnon 2014. Effect of partial lead service line replacement and the barriers to full replacement: a residential study in Halifax, Canada. Proc., 2014 AWWA Annual Conference & Exhibition. Boston, MA.

Gagnon G.A. 2014. Drinking water safety plans.  Assembly of Frist Nations Annual Infrastructure Conference and Tradeshow. Toronto, ON.

Xie, X. and G.A. Gagnon 2014. Development of a rapid ATP analysis method for UV disinfection monitoring - Confirming microbial response in a single work shift.  Proc., 2014 CSCE Annual Conference.  Halifax, NS

Wood, M.E. and G.A. Gagnon 2014. Optimizing treatment of residuals at a direct filtration water treatment plant.  Proc., 2014 CSCE Annual Conference.  Halifax, NS.

Fanous, M. G.A. Gagnon and C.B. Lake 2014. Examining the use of geotubes for removing aluminum in water treatment backwash water.  Proc., 2014 CSCE Annual Conference.  Halifax, NS.

Trueman, B. and G.A. Gagnon 2014. Optimization of orthophosphate dose for the control of lead release to drinking water. Proc., 2014 CSCE Annual Conference.  Halifax, NS.

Gamble, T. and G.A. Gagnon 2014. Evaluation of a Dissolved Air Floatation Plant via modeling. Proc., 2014 CSCE Annual Conference.  Halifax, NS.

Kot, M., K. Chandler, E. Perrier, H. Castleden, and G.A. Gagnon. 2013.Drinking Water Safety Plan (DWSP) Implementation: Early Lessons and Insights from Alberta’s Small Communities.  2013, WCWWA Annual Conference, Edmonton, AB.

Xie., X., J.E. Cairns, E.J. Wright, M. Merks, and G.A. Gagnon 2013. Pushing the disinfection monitoring envelope – Confirming microbial response in a single shift.  2013 ACWWA Annual Conference. Fredericton, NB.

Knowles, A.K., B. Trueman, K. Montreuil and G.A. Gagnon. 2013. Implementing Monitoring Programs for Corrosion Control and Lead Service Line Replacements: Successes and Challenges. 2013 AWWA Distribution Systems Symposium.  Itasca, IL

Granger, H. and G.A. Gagnon. 2013.  Direct engineered biofiltration for a local water treatment plant.  Proc., 2013 AWWA Water Quality Technology Conference.  Long Beach, CA.

McClintock, A.M., M. Chaulk, and G.A. Gagnon. 2013.  The effect of in-line coagulation on microfiltration membrane fouling and water quality: A pilot study. Proc., 2013 AWWA Water Quality Technology Conference.  Long Beach, CA.

Stoddart, A. and G.A. Gagnon. 2013. NOM removal and transformation in drinking water biolfiltration.  Proc. 2013 IWA Conference on Natural Organic Matter. Perth, AU. 

Lee, S.Y. and G.A. Gagnon 2013. Electrocoagulation at the Bench-Scale for the Treatment of Synthetic Produced Water. Proc., 2013 Annual Conference for the Canadian Society for Chemical Engineers. Fredericton, NB.

Bergese, J., J.L. Rand and G.A. Gagnon. 2013. Treatment of aqueous ammonia in wastewater. 2013 International Ultraviolet Association World Congress. Las Vegas, NV

Trueman, B. and G.A. Gagnon. 2013. Optimization of Phosphate Dose Following Full-scale Residential Sampling For Lead. Proc., 2013 AWWA Annual Conference & Exposition. Denver, CO.

Zevenhuizen, E. and G.A. Gagnon. 2013. In-line coagulation to reduce NF membrane folding in an IMS. Proc., 2013 AWWA Membrane Technology Conference.  San Antonio, TX.

Kot, M., H. Castleden and G.A. Gagnon. 2013. Keeping Water Safe – Drinking Water Safety Plans for Small Communities. 2013 Canadian Water Network Connecting Water Resources Meeting.  Ottawa, ON

Schmidt, J., R. Jamieson, and G.A. Gagnon. 2013 Wastewater Treatment System Performance in Kugaaruk and Grise Fiord, NU. 2013 Canadian Water Network Connecting Water Resources Meeting.  Ottawa, ON

Trueman, B. and G.A. Gagnon. 2013. Phosphate Dose Optimization Following Residential Sampling for Lead in Halifax, NS. 2013 Canadian Water Network Connecting Water Resources Meeting.  Ottawa, ON

Stoddart, A. and G.A. Gagnon. 2013.  Impact of nutrient and oxidant addition on Pilot-Scale direct biofiltration. 2013 AWWA Biological Symposium.  Denver, CO.

Granger, H. and G.A. Gagnon. 2013. Manganese Removal from a Surface Water Supply using Direct Biofiltration 2013 AWWA Biological Symposium.  Denver, CO.