April 10, 2019
RE: A graduate student position in biological filtration of surface water
A graduate position at the Masters (M.Sc.) or Doctoral (Ph.D.) level is available in the Water Treatment Group in the Department of Civil Engineering, University of Manitoba. Laboratory experience with Activated Carbon sorption and/or biological filtration in potable water treatment is required for this project. Hands-on laboratory experience in microbiology is an asset. A brief description of the project can be found at the end of this page; other projects undertaken by this group can be found at https://engadvisorsprofiles.cc.umanitoba.ca/user/beata_gorczyca/ ). All project involve field samples collection and the driver’s license is required.
The successful applicant will offered an assistantship of $17,500 per year at the Master’s level for 2 years or $19,500 at the PhD level for 4 years. Additionally, the student will have opportunities to work as a Teaching Assistant (TA) in the courses offered in the Department of Civil Engineering ( http://umanitoba.ca/faculties/engineering/departments/civil/152.html ). TA’s are typically working at 8 hours per week (14 weeks per term) at $21. 07 per hour.
Applications should be e-mailed to Dr. Beata Gorczyca (Beata.Gorczyca@umanitoba.ca) and include:
1) Motivation Letter
3) All transcripts
4) Copies of all publications, conference presentations, theses, etc.
The successful candidate should have GPA at or above 3.5 (out of 4.5) in the last two years of studies to qualify for an International Graduate Student Entrance Scholarship (IGSES) http://umanitoba.ca/faculties/graduate_studies/funding/international.html
(The candidates are encouraged to calculate their own GPA http://umanitoba.ca/faculties/graduate_studies/admin/569.html )
“Biological Filtration for Removal of Dissolved Organic Carbon in Potable Water Treatment”
Water quality in different geographical regions in the Canadian Prairies varies from low hardness (60-75 mg/L as CaCO3) and moderate organic matter (Dissolved Organic Carbon (DOC) of 8-12 mg/L) to very high hardness (75-600 as CaCO3) and DOC (8-25 mg/L) . The removal of DOC is especially important, as DOC contains the vast majority of precursors of potentially carcinogenic, regulated chlorine disinfection by-products, i.e. trihalomethanes (THMs).
Biological DOC removal is an attractive, low-cost alternative to chemical and physical DOC removal. However, the conditions required to support biological degradation of DOC in filtration of waters with DOC higher than 5 mg/L has never been studied.
Currently, water treatment specifically struggles to remove DOC in granular filtration; the sand/anthracite and granular activated carbon filters have very low DOC removal efficiency. Our preliminary investigations in several Canadian Prairie’s water treatment plants indicate that the surface water contains a high concentration of hydrophilic DOC (more biodegradable) to sustain biological filtration. Investigation of factors other than carbon that are limiting biological activity of these filters is needed.
The University of Manitoba, Winnipeg Canada was established in 1877 and is the largest university in the Province of Manitoba. It is also Manitoba’s most comprehensive and research-intensive institution. Located in the famous Red River Valley, Winnipeg is a cosmopolitan city known for its rich cultural environment, including the Royal Winnipeg Ballet, opera and many theaters. It provides a high quality life at a modest expense and offers access to some of the most beautiful lake country in North America, including Lake Winnipeg, the eleventh largest with the world-class beach. The region also offers ample opportunities for outdoor recreation in all seasons, camping, hiking, canoeing, skiing, snowmobiling, ice fishing, etc. More information can be found at http: www.winnipeg.ca.
Potable water treatment
1. Gorczyca B. (2021) Fractal properties of flocs, filtration cakes and biofilms in water and wastewater treatment processes. In: Water in Biomechanical and Related Systems (Series title : Biologically-Inspired Systems) ed. A. Gadomski, Springer in print ( https://www.springer.com/gp/book/9783030672263 )
2. Mirzaei, S. Gorczyca, B., Sparling S.(2020) Missing Links in Biological Active Filters Coupled with Oxidation: Electrostatic and Hydrophobic Interactions. Under Revisions Wat. Res. Oct.9 2020; WR-S-20-07166.
3. Mirzaei, S., & Gorczyca, B. (2020) Removal of trihalomethanes from high organic matter water sources using aeration: a feasibility study. Water Qual. Res. J 55(2), 184–197. https://doi.org/10.2166/wqrj.2020.016
4. Vojdani Z., Gorczyca B. (2020) Preliminary investigation into the claims of IBROM system. Water Qual. Res. J. 55(2), 198-208. https://doi.org/10.2166/wqrj.2020.017
5. Sadrnourmohamadi M., Brezinski K., Gorczyca B.(2020) Effect of ozonation on the structural characteristics of natural organic matter, humic acid, and fulvic acid. Water Qual. Res. J.; 55(2), 155-166.
6. Brzezinski K., Gorczyca B. (2019) Multi-spectral characterization of Natural Organic Matter (NOM) from Manitoba surface waters using High Performance Size Exclusion Chromatography. Chemosphere. 225, 53-64 https://doi.org/10.1016/j.chemosphere.2019.02.176
7. Brzezinski K., Gorczyca B.(2018) An overview of the uses of high performance size exclusion chromatography (HPSEC) in the characterization of natural organic matter (NOM) in potable water, and ion-exchange applications. Chemosphere. 217, 122-139. https://doi.org/10.1016/j.chemosphere.2018.10.028
8. Brzezinski K., Gorczyca B. Sadrnourmohamadi M. (2018) Ion-Exchange for Trihalomethane control in potable water treatment – A municipal case study in Rainy River, Ontario. Wat.Qual.Res.J. 54 (2): 142-160. https://doi.org/10.2166/wqrj.2018.134
9. Jha N., Kiss Z.Gorczyca B, (2018) Fouling mechanisms in nanofiltration membranes for the treatment of high DOC and varying hardness water. Desal. and Wat.Treatment. 127, 197-212
10. He, W., Xue, L., Gorczyca, B., Nan, J., Shi, Z.,(2018). Comparative analysis on flocculation performance in unbaffled square stirred tanks with different height-to-width ratios: Experimental and CFD investigations. Chem. Eng. Res. Des. 132, 518-535
11. Gorczyca, B. (2018) Membrane surface morphology and fouling in filtration of high DOC water. E3S Web of Conferences, Vol.59. https://doi.org/10.1051/e3sconf/20185900001
12. He W., Xue L., Gorczyca B., Nan.J., Shi.Z . (2018) Experimental and CFD studies of floc growth dependence on baffle width in square stirred-tank reactor for flocculation. Separation and Purification Technology;190, 228-242. Impact Factor: 3.843
13. Sadrnourmohamadi M. and Gorczyca.(2017) Effects of ozone as a stand -alone and coagulation-aid treatment on the reduction of trihalomethanes precursors from high DOC and low calcium hardness water. Desal. and Wat. Treatment. 78: 117-126. Impact Factor: 1.631.
14. Winning L.D, Gorczyca B., Brezinski K.(2017) Effects of total organic carbon on aquatic humic substances and the occurrence of lead at the tap. Wat.Qual.Res.Jour.Canada, 52.1, http://doi : 10.2166/wqrjc.2017.028
15. Goss, C.D., R.Wiens, Gorczyca, B., K.M. Gough (2017). Comparison of three solid phase extraction sorbents for their solation of THM precursors from Manitoban surface waters. Chemosphere,168, 917-924 Impact Factor: 3.698
16. Sadrnourmohamadi, M., Gorczyca, B., (2015). Removal of dissolved organic carbon (DOC) from high DOC and hardness water by chemical coagulation – relative importance of monomeric, polymeric and colloidal aluminum species. J. of Separation Sci. and Technol.. 50:1-11. Impact Factor: 3.091.
17. Sadrnourmohamadi M. and Gorczyca.(2015) Effects of ozone as a stand -alone and coagulation-aid treatment on the reduction of trihalomethanes precursors from high DOC and hardness water. Wat. Res. 73, 171-180 Impact Factor: 5.528.
18. Vahedi A. and Gorczyca B. (2014) Settling velocities of multifractal flocs formed in chemical coagulation process. Wat. Res. 53, 322-328.
19. Goss, C.D., Gorczyca, B. (2013) Trihalomethane Formation Potential of DOC Fractions Isolated From Two Canadian Prairie Surface Water Sources. Water Science and Technology: Water Supply.13.1, 114-122 http://www.iwaponline.com/ws/01301/ws013010114.htm
20. Sadrnourmohamadi A., Goss C. and Gorczyca B. and (2013) Removal of DOC and its fractions from the high DOC and hardness surface waters of the Canadian Prairie. Water Sources. Water Science and Technol.: Water Supply, 13, 3, 864-870
21. Vahedi A. and Gorczyca B. (2012). Predicting the settling velocity of flocs formed in water treatment using multiple fractal dimensions.Wat. Res. 46,(13), 4188-4194 http://dx.doi.org/10.1016/j.watres.2012.04.031
22. Nason J. and Gorczyca B. (2011). Recent Research Every Utility Manager Needs to Know About: Evolving Coagulation and Flocculation Roles. Ed. Speight V.,Via S. J.AWWA., 203, 1, 48-59.
23. Vahedi A. and Gorczyca B. (2011). Application of fractal dimensions to study the structure of flocs formed in lime softening process. Wat. Res.; 45, 2, 545-556.
24. Gorczyca B., Graham C. (2009). Analyses of particles in raw waters containing iron and organic carbon. Environmental Technol., 30, 4, 365-377.
25. Gorczyca B. and Klassen P. (2008). Optimization of solids separation in Dissolved Air Flotation. Water Qual. Res. J. Canada, 43, 2/3, 239-247.
26. Gorczyca B., Zhang G. (2007). Dissolved air flotation of Winnipeg tap water. Environmental Technol., 28, 243-254.
27. Gorczyca B., Zhang G. (2006). Solid/liquid separation behaviour of alum and polyaluminium chloride Water Science Technol.: Water Supply, 6, 1, 87–93.
28. Gorczyca B. 2003. Comment on hydrodynamics of biological aggregates of different sludge ages: an insight into the mass transport mechanisms of bioaggregates. Env. Sci.and Technol., 37, 4017.
29. Gorczyca B., London D. 2003. Characterization of particles in slow sand filtration at North Caribou water treatment plant. Water Qual. Res. J. Canada, 38, 153-168.
30. Gorczyca, B., Ganczarczyk J. 2002. Flow through alum coagulation and activated sludge flocs. Water Qual. Res. J. Canada, 37, 389-398.
31. Gorczyca, B. and J. Ganczarczyk. 2001. Fractal analysis of pore distributions in alum coagulation and activated sludge flocs. Water Qual. Res. J. Canada 36, 3, 687-700.
32. Gorczyca, B. and J. Ganczarczyk. 1999. Structure and porosity of alum coagulation flocs. Water Qual. Res. J. Canada 34, 653 - 666.
33. Gorczyca B. 1997. Comment on: “Settling velocity of aluminium-kaolinite floc” by Y.Adachi and Y.Tanaka. Water.Res. 31, 449-454
34. Gorczyca B. and J.Ganczarczyk. 1996. Image analysis of alum coagulated mineral suspensions. Environmental Technol. 17, 1361-1369