Education:

• B.S. Chemical and Petroleum Refining Engineering, Colorado School of Mines, 1984
• M.S. Environmental Engineering, Cornell University, 1989
• Ph.D. Environmental Engineering, Cornell University, 1993

Registered Professional Engineer:

• Florida, United States
• Wyoming, United States
• Ontario, Canada

Research Interests:

I am interested in sustainable wastewater treatment. Sustainable wastewater treatment provides economic and resource benefits over many current wastewater treatment practices where wastewater is considered to be a waste to be treated and then thrown away. This is both costly and stupid. In sustainable wastewater treatment, wastewater is considered to be a raw material that can be converted to useful products such as energy, nutrients and especially water. Where possible, the water will be reused directly and only thrown away to the environment when no other options are available. Because the useful products may sold, the net economic cost versus current practice is reduced. Because the useful products reduce the demand for these products directly from the environment while also reducing the discharge of contaminants, the net environmental cost of sustainable wastewater treatment is also reduced versus current practice.

Anaerobic processes are key components of sustainable wastewater treatment. Oxygen is not required, biomass yields are reduced and energy can be recovered, usually as methane and possibly as hydrogen or even directly as electricity. My recent focus has been to develop more technically capable and cost-effective systems for the anaerobic treatment of wastewaters. In particular, we have been looking at anaerobic hydrogen production, anaerobic membrane bioreactors, and anaerobic sludge digestion, the latter in combination with energy production systems such as engine generators, microturbines, fuel cells, etc. Most of the work is experimental but computer models are developed and evaluated to help focus experimentation and provide deeper insights into underlying mechanisms.

In addition to energy, water for reuse is a key product of wastewater treatment. In conjunction with the Drinking Water Research Group at the University of Toronto, we have been examining the application of advanced membrane processes to remove endocrine disrupting compounds from waters. The high quality waters produced can be used for a variety of purposes.

Academic and Professional Experience:

University of Wyoming, Laramie, WY, July 2008-present
Professor, Department of Civil and Architectural Engineering

University of Wyoming, Laramie, WY, August 2007-present
Head, Department of Civil and Architectural Engineering

University of Wyoming, Laramie, WY, August 2005-June 2008
Associate Professor, Department of Civil and Architectural Engineering

University of Toronto, Toronto, Ontario, Canada, July 1999-July 2005
Associate Professor, Department of Civil Engineering

University of Toronto, Toronto, Ontario, Canada, July 2003-June 2004
Associate Chair, Department of Civil Engineering

University of Toronto, Toronto, Ontario, Canada, July 1994-June 1999
Assistant Professor, Department of Civil Engineering

CH2M Hill, Inc., Deerfield Beach, Florida, February 1993-June 1994
Environmental Engineer

The Procter & Gamble Company, Cincinnati, Ohio, November 1984-July 1987
Process Development Engineer

Refereed Papers (as of September 2009):

• Comerton, A.M., R. C. Andrews, D. M. Bagley. 2009. Practical overview of analytical methods for endocrine-disrupting compounds, pharmaceuticals and personal care products in water and wastewater, Phil. Trans. Royal Soc. A., 367:3923-3939.
• Lin, H.J., K. Xie, B. Mahendran, D.M. Bagley, K.T. Leung, S.N. Liss, B.Q. Liao. 2009. Sludge properties and their effects on membrane fouling in submerged anaerobic membrane bioreactors (SAnMBRs), Water Research, 43:3827-3837.
• Shen, L., D.M. Bagley and S.N. Liss. 2009. Effect of organic loading rate on fermentative hydrogen production from continuous stirred tank and membrane bioreactors, Int. J. Hydrogen Energy., 34:3689-3696.
• Sajtar, E.T. and D.M. Bagley. 2009. Electrodialysis reversal: Process and cost approximations for treating coal-bed methane waters, Desal. Water Treat., 2:278-286.
• Comerton, A.M., R. C. Andrews, D. M. Bagley. 2009. The influence of natural organic matter and cations on the rejection of endocrine disrupting and pharmaceutically active compounds by nanofiltration, Water Research, 43:613-622.
• Comerton, A.M., R. C. Andrews, D. M. Bagley. 2009. The influence of natural organic matter and cations on fouled nanofiltration membrane effective molecular weight cut-off, J. of Membrane Sci., 327:155-163.
• Kraemer, J.T. and D.M. Bagley. 2008. Optimisation and design of nitrogen-sparged fermentative hydrogen production bioreactors, Int. J. Hydrogen Energy., 33:6558-6565
• Kraemer, J.T. and D.M. Bagley. 2008. Measurement of H2 consumption and its role in continuous fermentative hydrogen production. Water Sci. & Technol., 57(5):681-685.
• Comerton, A.M., R. C. Andrews, D. M. Bagley, and C. Hao. 2008. The rejection of endocrine disrupting and pharmaceutically active compounds by NF and RO membranes as a function of compound and water matrix properties. J. of Membrane Sci., 313:323-335.
• Kalogo, Y. and D.M. Bagley. 2008. Fermentative Hydrogen Production Using Biosolids Pellets as the Inoculum Source. Bioresource Technol., 99:540-546.
• Comerton, A.M., R. C. Andrews, D. M. Bagley, and P. Yang. 2007. Membrane adsorption of endocrine disrupting compounds and pharmaceutically active compounds. J. of Membrane Sci., 303:267-277.
• Spring, A.J., D.M. Bagley, R.C. Andrews, S. Lemanik and P. Yang. 2007. Removal of Endocrine Disrupting Compounds Using a Membrane Bioreactor and Disinfection. J. of Environ. Eng. Sci., 6:131-137.
• Kraemer, J.T. and D.M. Bagley. 2007. Improving the Yield from Fermentative Hydrogen Production, Biotechnol. Lett., 29:685-695.
• Kraemer, J.T. and D.M. Bagley. 2006. Supersaturation of Dissolved H2 and CO2 During Fermentative Hydrogen Production with N2 Sparging, Biotechnol. Lett. , 28:1485-1491.
• Sahely, H.R., H.L. MacLean, H.D. Monteith and D.M. Bagley. 2006. Comparison of On-Site and Upstream Greenhouse Gas Emissions from Canadian Municipal Wastewater Treatment Facilities. J. of Environ. Eng. Sci., 5:405-415.
• Comerton, A.M., R.C. Andrews and D.M. Bagley. 2006. Impact of Blending Reuse and Lake Water on Treated Water Quality. J. of Environ. Eng. Sci. , 5:359-363.
• Liao, B.Q., J.T. Kraemer, and D.M. Bagley. 2006. Anaerobic Membrane Bioreactors: Applications and Research Directions. Crit. Rev. Environ. Sci. Technol. , 36:489-530.
• Kraemer, J.T. and D.M. Bagley. 2005. Simulation of the Impact of Higher Ammonia Recycle Loads Caused by Anaerobic Sludge Digestion Upgrades on Effluent Ammonia Concentrations, Water Quality Research J. of Canada, 40:491-499.
• Shizas, I. and D.M. Bagley. 2005. Fermentative hydrogen production in a system using anaerobic digester sludge without heat-treatment as a biomass source, Water Science and Technology, 52(1-2):139-144.
• Comerton, A.M., R.C. Andrews and D.M. Bagley. 2005. Evaluation of an MBR-RO System to Produce High Quality Reuse Water: Microbial Control, DBP Formation, and Nitrate. Water Research, 39:3982-3990.
• Monteith, H., H.R. Sahely, H.L. MacLean, and D.M. Bagley. 2005. A Rational Procedure for Estimation of Greenhouse Gas Emissions from Municipal Wastewater Treatment Plants, Water Environment Research, 77:390-403.
• Kraemer, J.T. and D.M. Bagley. 2005. Continuous Fermentative Hydrogen Production Using a Two-Phase Reactor System with Recycle. Environ. Sci. Technol., 39:3819-3825.
• Liao, B.Q., D.M. Bagley, H.E. Kraemer, G.G. Leppard and S.N. Liss. 2004. A Review of Biofouling and Its Control in Membrane Separation Bioreactors, Water Environment Research, 76:425-436.
• Bagley, D.M., I.G. Sutherland and B.E. Sleep. 2004. Non-Enzymatic Degradation of Chlorofluorocarbon 113 Using Cyanocobalamin Under Anaerobic Conditions, J. of Environ. Eng. Sci., 3:295-299.
• Bagley, D.M., I.G. Sutherland and B.E. Sleep. 2004. Impact of Chlorofluorocarbon 113 on Chlorinated Ethene Biodegradation, Bioremediation Journal, 8(1-2):13-21.
• Shizas, I. and D.M. Bagley. 2004. Experimental Determination of Energy Content of Unknown Organics in Municipal Wastewater Streams, J. of Energy Engineering, ASCE. 130(2):45-53.
• Lalman, J.A. and D.M. Bagley. 2004. Extracting Long Chain Fatty Acids from a Fermentation Medium, J. of the American Oil Chemists' Society, 81(2):105-110.
• Lalman, J. and D.M. Bagley. 2002. Effects of C18 Long Chain Fatty Acids on Glucose, Butyrate and Hydrogen Degradation, Water Research, 36(13):3707-3313.
• Shizas, I. and D.M. Bagley. 2002. Improving Anaerobic Sequencing Batch Reactor Performance by Modifying Operational Parameters, Water Research, 36(1):363-367.
• Lalman, J. and D.M. Bagley. 2001. Anaerobic Degradation and Methanogenic Inhibitory Effects of Oleic and Stearic Acids, Water Research, 35(12):2975-2983.
• Sahely, B.S.G.E and D.M. Bagley. 2001. Diagnosing Upsets in Anaerobic Wastewater Treatment Using Bayesian Belief Networks, Journal of Environmental Engineering, ASCE, 127(4):302-310.
• Kaseros, V., B.E. Sleep and D.M. Bagley. 2000. Column Studies of Biodegradation of Mixtures of Tetrachloroethene and Carbon Tetrachloride, Water Research, 34(17):4161-4168.
• Lalman, J. and D.M. Bagley. 2000. Anaerobic Degradation and Inhibitory Effects of Linoleic Acid, Water Research, 34(17):4220-4228.
• Elliott, M., Y. Zheng and D.M. Bagley. 2000. Determining Significant Anaerobic Kinetic Parameters Using Simulation, Environmental Technology, Vol. 21, pp. 1181-1191.
• Bagley, D.M., M. Lalonde, V. Kaseros, K.E. Stasiuk and B.E. Sleep. 2000. Acclimation of Anaerobic Systems to Biodegrade Tetrachloroethene in the Presence of Carbon Tetrachloride and Chloroform, Water Research. Vol. 34, pp. 171-178.
• Bagley, D.M. and T.S. Brodkorb. 1999. Modeling the microbial kinetics in an anaerobic sequencing batch reactor -- model development and experimental validation, Water Environment Research. Vol. 71, pp 1320-1332.
• Zheng, Y. and D.M. Bagley. 1999. Numerical Simulation of the Batch Settling Process, Journal of Environmental Engineering, ASCE, Vol. 125, pp 1007-1013.
• Bagley, D.M. 1998. Systematic Approach for Modeling Tetrachloroethene Biodegradation, Journal of Environmental Engineering, ASCE, Vol. 124, pp. 1076-1086.
• Zheng, Y. and D.M. Bagley. 1998. Dynamic Model for Zone Settling and Compression in Gravity Thickeners, Journal of Environmental Engineering, ASCE, Vol. 124, pp. 953-958.
• Bagley, D.M. and R. Hofmann. 1998. Discussion of "Environmental Impacts of Nutrient Removal Processes: Case Study", by van Loosdrecht, M.C.M., T. Kuba, H.M. van Veldhuizen, F.A. Brandse, and J.J. Heijnen. Journal of Environmental Engineering, ASCE, Vol. 124, pp. 481-482.
• Bagley, D.M. and J.M. Gossett. 1995. Chloroform Degradation in Methanogenic, Methanol Enrichment Cultures and by Methanosarcina barkeri 227, Applied and Environmental Microbiology, Vol. 61, pp. 3195-3201.
• Bagley, D.M. and J.M. Gossett. 1990. Tetrachloroethene Transformation to Trichloroethene and cis-1,2-Dichloroethene by Sulfate-Reducing Enrichment Cultures, Applied and Environmental Microbiology, Vol. 56, pp. 2511-2516.