Civil and Environmental EngineeringWestern Engineering

Select Publications

Refereed Journal Publications

  1. Nakhla, G.F. and Lugowski, A.J. " Biological Nutrient Removal-Upgrades eliminate ammonia excursions and increase process stability at a rendering plant ", Industrial Wastewater, Water Environment Federation, September/October (1999), 7(5), pp. 45-50.

  2. Abuzaid, N.S.,Al-Malack,M.H., Nakhla, G.F., Essa, M.H., and Al-Tawabini, B.S.,” Effect of Dissolved Oxygen and Surfactant Treatment on the Adsorptive Capacity of a Local Soil for Phenol,” J. Environ. Sci. Health, A35(3), (2000), pp. 263-280.

  3. Nakhla, G.F., and Niaz, M.,” In-Situ Bioremediation of Gasoline-Contaminated Ground Water- Impact of Process Parameters,”  Environmental Progress, AIChE, Vol.21, No. 1, (2002), pp.37-46.

  4. Nakhla, G.F.,Kochany, J., and Lugowski, A.,” Evaluation of PCBs in Sludges By Various Micorbial   Cultures,” Environmental Progress, AIChE, Vol.21, No. 2, (2002), pp.85-93.

  5. Nakhla, G., and Suidan, M., “ Determination of Biomass Shear Loss Coefficients in Anaerobic Bioreactors,” Biotechnology & Bioengineering,Vol. 80, N0.6,  Dec. 20 (2002), pp.660-669.

  6. Nakhla, G. and Farooq, S., “ Simultaneous Nitrification and Denitrification in Slow Sand Filters,” Journal of Hazardous Materials, (2003), pp.291-303

  7. Nakhla, G. “ Biokinetic Modeling of In-Situ Bioremediation of BTX Compounds- Impact of Process Variables and Scale-Up Considerations,”  Water Research, (2003), Vol.37, No.6, pp.1296-1307.

  8. Nakhla, G., and Lugowski, A., “ Control of Filamentous Organism in Food Processing Wastewaters Using Selectors and Intermittent Aeration,” Journal of Chemical Technology and Biotechnology, 78, (2003), pp.420-430.

  9. Nakhla, G., Al-Sabawi, M., Bassi, A., and Liu, V., “ Anaerobic Treatability of High Oil and Grease Rendering Wastewater,” Journal of Hazardous Materials B102, (2003), pp.243-255.

  10. Cui, Y.; Nakhla, G.;and Zhu,J.,” Simultaneous Carbon and Nitrogen Removal in Anoxic-Aerobic Circulating Fluidized Bed Biological Reactor (CFBR)”  Environmental Technology, Vol.25, (2004), pp. 699-712.

  11. Liu,V., Nakhla, G., and Bassi,A., “ Treatability of High Strength Pet Food wastewater-A continuous Flow Aerobic System Performance Evaluation,” Environmental Technology, Vol.25,( 2004), 577-588.

  12. Liu,V., Nakhla, G., and Bassi,A., “Treatability and Kinetic Studies of Mespohilic Aerobic Biodegradation of High Oil and Grease Pet Food Wastewater, “  Journal of Hazardous Materials, B112(1-2), (2004), pp.87-94.

  13. Quensel, D., Nakhla, G., “Utilization of an Activated Sludge for the Improvement of an Existing Thermophilic Wastewater Treatment System,” J. Env. Eng. Div. (ASCE), 131(4), (2005), 570-578.

  14. Nakhla, G., Lugowski, A., Sverdlikov, A., Scherbina, N, and Babcock, K., “Simultaneous Nitrification Denitrification and Clarification in Pseudoliquified Activated Sludge System,” Water Environment Research, 77(1), (2005), 98-112.

  15. Quensel, D., and Nakhla, G.,” Characterization and Treatability of Aerobic Bacterial Thermophilically Treated Wastewater by a Conventional Activated Sludge and  Granular Activated Carbon,” Water Research, 39(4), (2005), 677-687

  16. Patel, J; Nakhla, G., and Margaritis, A., “ Optimization of Biological Nutrient Removal in a Membrane Bioreactor System,” J. Env. Eng. Div. (ASCE), 131(7), (2005), 1021-1029..

  17. Nakhla, G., Liu, V., and Bassi, A.,” Kinetic Modeling of Biodegradation of High Oil and Grease Rendering Wastewater, “Bioresource Technology, , 97(1), (2006), 131-139..

  18. Holakoo, L; Nakhla, G.; Yanful, E.; and Bassi, A.,” Simultaneous Nitrogen and Phosphporous Removal in Continuously Fed and Aerated Membrane Bioreactor, “ J. Env. Eng. Div. (ASCE), 131 (10), (2005), 1469-1472.

  19. Nakhla, G., Lugowski, A., Patel, J., and Rivest, V., “ Combined Biological and Membrane Treatment of Food Processing Wastewater to Achieve Dry Ditch Criteria: Start-up Phase,” Bioresource Technology, 97(1), (2006), 1-14.

  20. Hewayde, E., Nehdi, M., Allouche, E., and Nakhla, G., “ Neural Network Prediction of Concrete Degradation by Sulfuric Acid Attack, “ Accepted for Publication in Structure and Infrastructure Engineering, March 2005.

  21. Mohan, P.; Nakhla, G., and Yanful, E., “Biodegradability of Surfactants under Aerobic, Anoxic, and Anaerobic Conditions,” J. Env. Eng. Div. (ASCE), 132 (2), (2006), 279-283.

  22. Acharya, C., Nakhla, G., and Bassi, A., “ Treatment of High Strength Pet Food Wastewater Using Two Stage Membrane Bioreactors, “Accepted for Publication in Water Environment Research, April 2005.

  23. Patel, J. and Nakhla, G. “ Performance Assessment of a Novel MBR System for BNR“  accepted   for publication in Water Environment Research, July 2005.

  24. Quesnel, D., and Nakhla, G., “ Optimization of the Aerobic Biological Treatment of Thermophilically Treated Refractory Wastewater, “J. of Hazardous Materials, 125 (1-3), (2005), 221-230.

  25. Yang, L., Bassi, A.,and Nakhla, G., “Electrokinetic Dewatering of Oily Sludges,” J. of Hazardous Materials, 125 (1-3), (2005), 130-140.

  26. Patel, A., Nakhla, G., and Zhu, J. “ Detachment of Multi-species Biofilm in a Circulating Fluidized Bed Bioreactor, “Biotechnology and Bioengineering, 92(4), (2005), 427-437.

  27. Kurian, R., Acharya, C., Nakhla, G., and Bassi, A., “ Conventional and Thermophilic Aerobic Treatability of  High Strength Oily Pet Food Wastewater Using MBRs,”  Water Research,  39(19), (2005), 4299-4308.

  28. Acharya, C., Nakhla,G., and Bassi, A., “ A Novel Two-Stage Denitrifying Process for the Treatment of High Strength Pet Food Wastewater,” J. of  Hazardous Materials, 129(1-3), (2006), 194-203.

  29. Xu, Z., and Nakhla, G., “ Pilot-Scale Demonstration of Prefermentation for Enhancement of Food Processing Wastewater Biodegradability, “ Accepted for publication in J. Chemical Technology & Biotechnology, September 2005.

  30. Gohil, A., and Nakhla, G., “ Treatment of Food Industry Wastewater by Bench-Scale UASB-Anoxic-Aerobic System, “ Accepted for Publication in Water Environment Research, September 2005.

  31. Acharya, C., Nakhla, G., and Bassi, A., “ Operational Optimization and Mass Balances in a Two-Stage MBR Treating high Strength Pet Food Wastewater,”  accepted for publication in J. Env. Eng. (ASCE), October 2005.

  32. Quesnel, D., and Nakhla, G., “ Determination of Biodegradation Kinetics of Acetone and Methyl Isobutyl Ketone in Thermophilically Treated Chemical Industry Wastewater, “accepted for publication in J. of Hazardous Materials, September 2005.

  33. Hewayde, E., Nakhla, G., Allouche, E., and Mohan, P., “ Beneficial Impact of Coatings on Biological Generation of Sulfides in Concrete Sewer Pipes, “Accepted for Publication in Structure and Infrastructure Engineering, September 2005.

  34. Gohil, A., and Nakhla, G., “ Treatment of Tomato Processing Wastewater,” accepted  for publication in Bioresource Technology, September 2005.

  35. Gohil, A., and Nakhla, G., “ Performance Assessment of a UASB-Anoxic-Oxic System for the Treatment of Tomato Processing Wastewater,” accepted for publication in J. Chemical Technology and Biotechnology, September 2005.

  36. Patel, A., Gohil, A., and Nakhla, G., “ Parametric Study of the Factors Influencing Simultaneous Denitrification and P removal, “accepted for publication in J. Chemical Technology and Biotechnology, September, 2005.

  37. Mohan, P., Nakhla, G., and Yanful, E., “ Biokinetics of Biodegradation of Biosurfactants under Aerobic,   Anoxic, and Anaerobic Conditions, “Water Research, 40(3), (2006), 533-540.

  38. Jeganessan, J., Nakhla, G., and Bassi, A. “ Utilization of Immobilized Lipase for the Degradation of Oil and Grease in Rendering Wastewater, “accepted for publication in J. Hazardous Materials, November 2005.

  39. E. Hewayde, M. Nehdi, E. Allouche, and G. Nakhla , “Effect of Geopolymer Cement on Microstructure, Compressive Strength, and Sulfuric Acid Resistance of Concrete”, accepted for publication in Magazine of Concrete Research, Thomas Telford, January 2006.

  40. Holakoo, l., Nakhla, G., Yanful, E., and Bassi, A., “Chelating Properties and Molecular Weight Distribution of Soluble Microbial Products from an Aerobic Membrane Bioreactor, “accepted for publication in Water Research, February 2006.

  41. E. Hewayde, M. Nehdi, E. Allouche, and G. Nakhla, “Effect of mixture design parameters on resistance of concrete to sulfuric acid”, accepted, ASCE Journal of Materials for Civil Engineering (ASCE), February 2006.

  42. Patel, J; and Nakhla, G.,., “ Interaction of Denitrification and P Removal in Anoxic P Removal Systems ,” Accepted for Publication in Desalination, March 2006.

  43. Kurian R., Nakhla, G., and Bassi, A., “ Biodegradation Kinetics of High Strength Oily Pet Food Wastewater in Membrane-Coupled Bioreactor,” accepted for publication in Chemosphere, March 2006.

  44. Xu Z., and Nakhla, G., “ Characterization and Modeling of Nutrient Deficient Tomato-Processing Wastewater Treatment Using an Anaerobic/Aerobic System,” accepted for publication in Chemosphere, March 2006.

  45. Patel A., Zhu J., and Nakhla, G., “ Simultaneous Carbon, nitrogen, and Phosphorous Removal in a Circulating Fluidized Bed Bioreactor, “ accepted for publication in Chemosphere, March 2006.

  46. Holakoo, L., Nakhla, G., Yanful,E.,and Bassi, A., “ Long-term Performance of Membrane Bioreactor for  Biological Nitrogen Removal from Municipal Wastewater,” accepted  for publication in Chemosphere, June 2006.

Chapters in Books

  1. Sverdlikov, A.I., Scherbina, G.P., Zemjlak, M.M., Sverdlikov, A.A., Haycock, D.H, Lugowski, A., Nakhla, G., Wang, L.K., and Hung, Y.,” Column Bioreactor Clarifier Process (CBCP),” In Handbook of Environmental Engineering, Dr.L. Wang (Ed), (2005).

  2. Nakhla G., Xu Z., Gohil A., Lugowski A., and Hsung Y.T., “ Biological Wastewater Treatment of Nutrient-Deficient Tomato-Processing and Bean-Processing Wastewater, “ In Environmental Bioengineering, Dr. Y.T. Hsung (Ed), October 2005.

Conference Proceeding Papers

  1. Nakhla, G.F. and Lugowski, A.J. "Full‑Scale Comparative Performance Assessment of Selectors and Intermittent Aeration for Filament Control”,  Proc. 72nd Annual Water Environment Federation Conference, October 1999, New Orleans.

  2. Lugowski, A.J., Nakhla, G.F., Palmateer, G. and Purcell, J. “Performance of Anaerobic Digesters Using Bioenhancers”,  Proc. at the 72nd Annual Water Environment Federation Conference, October 1999, New Orleans.

  3. Shafai, S., Nakhla, G., Shannon E., Lugowski, A., and Schyff, J., “Design Construction and Start-up of a Communal Biological Nutrient Removal Wastewater Treatment Plant”, Presented at the Water Environment Association of Ontario Conference, (April 2001)

  4. Black-Kolesnichenko, A., Nakhla, G., Briens, C., and Plisson-Saune, S.”Batch Respirometry for On-line Toxicity Detection,” Proc. Of the CSCE-ASCE Conference on Environmental Engineering, Niagra Falls, ON, July 2002.

  5. Lugowski, A., Nakhla, G., and Gravelle, M., “Treatment of High Strength Leachate By Biological Nutrient Removal Processes,” Proc. Of the CSCE-ASCE Conference on Environmental Engineering, Niagara Falls, ON, July 2002.

  6. Quensel, D., Nakhla, G.,  Lugowski, A.,and Boose, T.” Biological Treatment of Refractory Organics in Industrial Wastewater,” Proc. Of the 75th Annual Water Environment Federation Conference, October 2002, Chicago.

  7. Nakhla, G., Lugowski, A., Sverdlikov, A., Scherbina, N, and Babcock, K., “Simultaneous Nitrification Denitrification and Clarification in Pseudoliquified Activated Sludge System,” Proc. Of the 75th Annual Water Environment Federation Conference, October 2002,Chicago.

  8. Nakhla, G., and Lugowski, A. “ Waste Management: Practical Considerations and Challenges, “ Invited Keynote Lecture, Proc. Of the  6th Saudi Engineeering Conference, Dharhan, Saudi Arabia, Dec.14-17, 2002.

  9. Quesnel, D., and Nakhla, G.’ “ Evaluation of Granular Activated Carbon and Activated Sludge for the Treatment of a Chemical Industry Refractory Wastewater, “ Proc. Of the 76th Annual Water Environment Federation Conference, October 2003,Los Angeles.

  10. Liu, V., Nakhla, G., Bassi, A., and Al-Sabawi, M., “ Comparative Evaluation of Aerobic and Anaerobic Treatment of High Oil and Grease Rendering Wastewater, “Proc. Of the 76th Annual Water Environment Federation Conference, October 2003,Los Angeles.

  11. Lugowski, A.J., Nakhla, G., Patel, J.,and Rivest, V., “ Combined Biological and Membrane Treatment of Food Processing Wastewater to Achieve Dry-Ditch Criteria,” Proc. Of the 76th Annual Water Environment Federation Conference, October 2003,Los Angeles.

  12. Hewayde, E., Allouche, e., and Nakhla, G., “ Experimental Investigations of the Effect of Selected Admixtures on the Resistance of Concrete to Sulfuric Acid Attack, “ASCE Pipeline Conference, Baltimore, Maryland, June 2003.

  13. Quesnel, D., and Nakhla, G.,” Simultaneous Nitrification and Denitrification in an Activated Sludge Treating Thermophilically Processed Chemical Industry Wastewater,” Proc. Of the 77th Annual Water Environment Federation Conference, October 2004,New Orleans.

  14. Acharya, C., and Nakhla, G., and Bassi, A.., “ Treatment of High Strength Pet Food Wastewater Using Two Stage Membrane Bioreactors,” Proc. Of the 77th Annual Water Environment Federation Conference, October 2004,New Orleans.

  15. Holakoo, L., Nakhla, G.,Bassi, a., and Yanful, E., “ Simultaneous Nitrification-Denitrification and Phosphorous Removal in Continuously Fed and aerated Membrane Bioreactor,” Proc. Of the 77th Annual Water Environment Federation Conference, October 2004,New Orleans.

  16. P.K.Mohan, G. Nakhla and E.K.Yanful, " Effect of Biosurfactants on the Biodegradation of Naphthalene in Sediments under Anaerobic Conditions", 10th World Congress on Anaerobic Digestion, 2004, Montreal, Canada.

  17. Hewayde, E., Allouche, e., and Nakhla, G.,” The Use of Metakaolin and Geopolymer Cement to Improve Concrete Resistance to Sulfuric Acid Attack,” Proc. Of the 7th International Symposium on Utilization of High Strength High Performance Concrete, ACI, Washington, DC, June 2005, 1453-1465.

  18. Patel,A., Nakhla, g., and Zhu, J., “ Anoxic Phosphorous Uptake in Circulating Fluidized Bed Bioreactor,” Proc. Of the 33rd CSCE Annual Conference, Toronto, ON, Canada, June 2-4, 2005.

  19. Gohil, A., and Nakhla, G., “ UASB-Anoxic-Oxic System for the Treatment of High Strength Tomato Processing Wastewater,” Proc. Of the 33rd CSCE Annual Conference, Toronto, ON, Canada, June 2-4, 2005.

  20. Jeganathan, J.,Nakhla, G., and Bassi,A., “ Treatability of High Strength and High Oil and Grease Pet Food Industrial Wastewater Using Mesophilic UASB Reactro,” Proc. Of the 33rd CSCE Annual Conference, Toronto, ON, Canada, June 2-4, 2005.

  21. Kurian, R., Acharya, C., Nakhla, G., and Bassi, A., “ Comparison of Conventional and Thermophilic Aerobic MBRs Treating High Strength Oily Pet Food Wastewater, “ Proc. Of the 78th Annual Water Environment Federation Conference, Oct-Nov., 2005,Washington, DC.

  22. Jeganathan, J., Nakhla, G., and Bassi, A., “ Performance of UASB Reactor Treating High Oil& Grease Pet Food Wastewater Under Critical Loading Conditions,” Proc. Of the 78th Annual Water Environment Federation Conference, Oct-Nov., 2005,Washington, DC.

  23. Patel,A., Nakhla, g., and Zhu, J.,” Biological Nutrients Removal in Circulating Fluidized Bed Bioreactor (CFBBR), “Proc. Of the 78th Annual Water Environment Federation Conference, Oct-Nov., 2005,Washington, DC.

  24. Zhongda, X., Nakhla, G., Broan, K., Rivest, V., and Lugowski, A., “ Performance of a Pilot-Scale Anoxic/Oxic System Treating High Strength Tomato-Processing Wastewaters,” Proc. Of the 78th Annual Water Environment Federation Conference, Oct-Nov., 2005,Washington, DC.

  25. Yang, L., Nakhla, G., and Bassi, A.,” Electrokinetic Dewatering of Oily and Proteinaceous Sludges,” Proc. Of the 78th Annual Water Environment Federation Conference, Oct-Nov., 2005,Washington, DC.

  26. P.K.Mohan, G. Nakhla and E.K.Yanful (2005) "Biodegradability of Naphthalene Contaminated Soil under Aerobic, Anoxic and Anaerobic Conditions", International Conference on Energy, Environment and Disaster (INCEED 2005), Charlotte, North Carolina, USA.

  27. P.K.Mohan, G. Nakhla and E.K.Yanful, "Biodegradability of PAH Contaminated Sediment by Sequencing of Different Microorganisms", Eighth International In Situ and On-Site Bioremediation Symposium, Baltimore, 2005 ,Maryland, USA.

  28. P.K.Mohan, G. Nakhla and E.K.Yanful, "Biokinetic Parameter Estimation for Polycyclic Aromatic Hydrocarbon Remediation", International Conference on Environmental Science and Technology, 2005,New Orleans, Louisiana, USA.

Industrial Reports

  1. “Evaluation and Optimization of Existing Wastewater Treatment System”, Prepared for Stepan Canada, Spetember 2000

  2. “Assessment of Existing Treatment Plant Capacity at Horizon Poultry in Ayr for Future Dry Sausage Operation”, Prepared for J.M. Schneider, August 2000

  3. “Final Environmental Study Report for the Upgrade of The Water Pollution Control Plant”, Prepared for Town of Hawkesbury, August 2000

  4. “Evaluation of Direct Heating Water Quality”, Prepared for Maple Leaf Pork, July 2000

  5. “Process Plant Sludge Management Cost Evaluation Study”, Prepared for GM Powertrain Division, Bay City, Michigan, July 2000

  6. “Hazard and Operability (Hazop) Study Hazardous Waste Treatment Centre Qatar”, Prepared for Qatar General Petroleum Corporation, June 2000

  7. “Final Design Report Hazardous Waste Treatment Centre”, Prepared for Qatar General Petroleum Corporation, May 2000

  8. “Improvements and Modifications to Wastewater Treatment and Odour Management”, Prepared for Sun Brite Canning Company, April 2000

  9. “Interim Environmental Study Report for the Upgrade of the Town of Hawkesbury Water Pollution Control Plant Phase I & II”, Prepared for Town of Hawkesbury, “April 2000

  10. “Preliminary Design Report Hazardous Waste Treatment Centre”, Prepared for Qatar General Petroleum Corporation, November 1999 

  11. “Preliminary Design Brief Liquid Hazardous Waste Treatment Centre”, Prepared for Qatar General Petroleum Corporation, November 1999

  12. “Sludge Dewaterability Study”, Prepared for GM Powertrain Division, Bay City, Michigan, September 1999

  13. “Operational Training Seminar Biological Nutrient Removal, Heidelberg Communal Wastewater Treatment System”, Prepared for Alt Heidelberg Estates, Heidelberg, Ontario, August 1999

  14. “Landfill Leachate Treatment System Conceptual Design”, Prepared for Green Lane Waste Management, London, Ontario, July 1999

  15. “Design Brief: Groundwater Extraction and Treatment System at 40 Wellington Street Property”, Prepared for Rockwell Automation of Canada Inc., June 1999

  16. “Study of Feasibility of Converting Conventional Activated Sludge Removal System”, Prepared for Packard Pollution Control Plant, Ottawa, Ontario, June 1999

  17. “Addendum for the Environmental Study Report Class Environmental Assessment Wastewater Treatment System Expansion Upgrade at Munster Hamlet”, Prepared for Region of Ottawa-Carleton, May 1999

  18. “Wastewater Study and Design of Neutralization Facilities”, Prepared for J.M. Schneider (Horizon Poultry), Ayr, Ontario, February 1999

  19. “Pre-Engineering Study to Assess Effluent Excursions”, Prepared for Armstrong Cheese, Oakville, Ontario, February 1999

  20. “Design of Odour Control Facilities”, Prepared for J.M. Schneider (Horizon Poultry), Ayr, Ontario, 1999

  21. “Investigation of Contaminant Contributions of Various Site Operators at Liberty Industrial Facility in Farmingdale, New York”, Prepared for PRP Group, 1999

Conference Presentations

  1. Nakhla, G.F. and Lugowski, A.J. "Full‑Scale Comparative Performance Assessment of Selectors and Intermittent Aeration for Filament Control”,  Presented at the 72nd Annual Water Environment Federation Conference, October 1999, New Orleans.

  2. Lugowski, A.J., Nakhla, G.F., Palmateer, G. and Purcell, J. “Performance of Anaerobic Digesters Using Bioenhancers”,  Presented at the 72nd Annual Water Environment Federation Conference, October 1999, New Orleans.

  3. Nakhla, G., and Lugowski, A. “ Waste Management: Practical Considerations and Challenges, “ Invited Keynote Lecture, 6th Saudi Engineeering Conference, Dharhan, Saudi Arabia, Dec.14-17, 2002.

Abstracts & Presentations to Professional Meetings

  1. Nakhla, G.F. and Lugowski, A.L. Food Processing Industry: Water& Wastewater Conservation & Treatment.  Invited for Presentation at the Ontario Economic Development Conference held at Eaton Centre Mariott Hotel  in Toronto, Feb. 8, 2001.

  2. Nakhla, G., “ Emerging Technologies for Treatment of Food-Processing Wastewaters,” Invited for Presentation at the Waterwise Seminar, Ontario Ministry of Agriculture and Food, Guelph, May 3, 2005.

  3. Nakhla, G., “ Review of Common Water and Wastewater Treatment ,” invited for Presentation at the UV Water Treatment Course, Walkertown Clean Water Centre, Walkertown, May24-25, 2006.

  4. Nakhla, G., “Wastewater Treatment Challenges in Canada, “ Invited for Presentation at the Canadian Federation of Municipalities Conference, Montreal, Canada, June 2, 2006.