Current research areas
Contact Us
Dr. M. Ray, Director
Email: mray@eng.uwo.ca
M. Richards, Coordinator
Email: mricha43@uwo.ca
Dr. K. Kreyman, Special Adviser
Email: kkreyman@uwo.ca
Selected publications
Water and wastewater treatment
Chakraborty, T., Balusani, D., Smith, S., Santoro, D., Walton, J., Nakhla, G., & Ray, M. B. (2020). Reusability of recovered iron coagulant from primary municipal sludge and its impact on chemically enhanced primary treatment. Separation and Purification Technology, 231, 115894. https://doi.org/10.1016/j.seppur.2019.115894
Chakraborty, T., Gabriel, M., Amiri, A. S., Santoro, D., Walton, J., Smith, S., Ray, M. B., & Nakhla, G. (2017). Carbon and phosphorus removal from primary municipal wastewater using recovered aluminum. Environmental Science and Technology, 51(21), 12302–12309. https://doi.org/10.1021/acs.est.7b03405
Chowdhury, P., Sarathy, S. R., Das, S., Li, J., Ray, A. K., & Ray, M. B. (2020). Direct UV photolysis of pharmaceutical compounds: Determination of pH-dependent quantum yield and full-scale performance. Chemical Engineering Journal, 380, 122460. https://doi.org/10.1016/j.cej.2019.122460
Crapulli, F., Santoro, D., Sasges, M. R., Ray, S., Mahmoud, H., & Ray, A. K. (2015). Quantifying ultraviolet inactivation kinetics in nearly opaque fluids. Water Quality Research Journal of Canada,50(1), 34–46. https://doi.org/10.2166/wqrjc.2014.032
Ding, H., Pan, F., Mulalic, E., Gomaa, H., Li, W., Yang, H., Jiang, Z., Wang, B., Cao, X., & Zhang, P. (2017). Enhanced desulfurization performance and stability of
Ghosh, M., Manoli, K., Renaud, J. B., Sabourin, L., Nakhla, G., Sharma, V. K., & Ray, A. K. (2019).
Gomaa, H. G., & Sabouni, R. (2016). Interfacial phenomena and droplet size of
Gomaa, H. G., & Sabouni, R. (2019). Performance characteristics of a suspended-catalyst oscillatory membrane photocatalytic reactor. Chemical Engineering and Technology, 42(3), 575–583. https://doi.org/10.1002/ceat.201800260
Khan, A. H., Kim, J., Sumarah, M., Macfie, S. M., & Ray, M. B. (2017). Toxicity reduction and improved biodegradability of benzalkonium chlorides by ozone/hydrogen peroxide advanced oxidation process. Separation and Purification Technology, 185, 72–82. https://doi.org/10.1016/j.seppur.2017.05.010
Khan, A. H., Libby, M., Winnick, D., Palmer, J., Sumarah, M., Ray, M. B., & Macfie, S. M. (2018). Uptake and phytotoxic effect of benzalkonium chlorides in Lepidium sativum and Lactuca sativa. Journal of Environmental Management, 206, 490–497. https://doi.org/10.1016/j.jenvman.2017.10.077
Khan, A. H., Macfie, S. M., & Ray, M. B. (2017). Sorption and leaching of benzalkonium chlorides in agricultural soils. Journal of Environmental Management, 196, 26–35. https://doi.org/10.1016/j.jenvman.2017.02.065
Kim, M., Nakhla, G., & Keleman, M. (2019). Modeling the impact of food wastes on wastewater treatment plants. Journal of Environmental Management, 237, 344–358. https://doi.org/10.1016/j.jenvman.2019.02.065
Kim, M., Abdulazeez, M., Haroun, B. M., Nakhla, G., & Keleman, M. (2019). Microbial communities in
Liu, G., Jiang, Z., Cao, K., Nair, S., Cheng, X., Zhao, J., Gomaa, H. G., Wu, H., & Pan, F. (2017). Pervaporation performance comparison of hybrid membranes filled with two-dimensional ZIF-L nanosheets and zero-dimensional ZIF-8 nanoparticles. Journal of Membrane Science, 523, 185–196. https://doi.org/10.1016/j.memsci.2016.09.064
Liu, X., Kim, M., & Nakhla, G. (2018). Performance and kinetics of nitrification of low ammonia wastewater at low
Mahrous, N. N., Columbus, M. P., Southam, G., & Macfie, S. M. (2019). Changes in microbial community structure and increased metal bioavailability in a metal-contaminated soil and in the rhizosphere of corn (Zea mays). Rhizosphere, 11, 100169. https://doi.org/10.1016/j.rhisph.2019.100169
Malekshoar, G., & Ray, A. K. (2016). In-situ grown molybdenum sulfide on TiO2 for dye-sensitized solar photocatalytic hydrogen generation. Chemical Engineering Science, 152, 35–44. https://doi.org/10.1016/j.ces.2016.05.029
Manoli, K., Nakhla, G., Ray, A. K., & Sharma, V. K. (2017). Oxidation of caffeine by acid-activated ferrate(VI): Effect of ions and natural organic matter. AIChE Journal, 63(11), 4998–5006. https://doi.org/10.1002/aic.15878
Niasar, H. S., Das, S., Xu, C. (Charles), & Ray, M. B. (2019). Continuous column adsorption of naphthenic acids from synthetic and real oil sands
Popugaeva, D., Kreyman, K., & Ray, A. K. (2020). Removal of aluminum from alkaline aqueous solution by adsorption on Degussa P25 TiO2 and vermiculite concrete-supported ferric oxyhydroxide. Canadian Journal of Chemical Engineering, 98, 373–383. https://doi.org/10.1002/cjce.23622
Popugaeva, D., Manoli, K., Kreyman, K., & Ray, A. K. (2019). Removal of aluminum from aqueous solution by adsorption on montmorillonite K10, TiO2, and SiO2: kinetics, isotherms, and effect of ions. Adsorption, 25, 1575–1583. https://doi.org/10.1007/s10450-019-00141-2
Sabouni, R., & Gomaa, H. G. (2019). Photocatalytic degradation of pharmaceutical micro-pollutants using ZnO. Environmental Science and Pollution Research, 26(6), 5372–5380. https://doi.org/10.1007/s11356-018-4051-2
Wan, J., Chakraborty, T., Xu, C. (Charles), & Ray, M. B. (2019). Treatment train for tailings
Willick, I. R., Plaxton, W. C., Lolle, S. J., & Macfie, S. M. (2019). Transcriptional and post-translational upregulation of phosphoenolpyruvate carboxylase in Arabidopsis thaliana (L. Heynh) under cadmium stress. Environmental and Experimental Botany, 164, 29–39. https://doi.org/10.1016/j.envexpbot.2019.04.018
Zhao, Z., Sun, W., Ray, A. K., Mao, T., & Ray, M. B. (2020). Coagulation and disinfection by-products formation potential of
Khalil, A., Rosso, D., DeGroot, C.T., 2021, "Effects of flow velocity and bubble size distribution on oxygen mass transfer in bubble column reactors - A critical evaluation of the Computational Fluid Dynamics ‐ Population Balance Model," Water Environment Research, In Press, DOI: 10.1002/wer.1604.
Khalil, A., Santoro, D., Batstone, D.J., DeGroot, C.T., 2021, "Uncertainty analysis of rising sewer models with respect to input parameters and model structure using Monte Carlo simulations and computational fluid dynamics," Water Science & Technology, 83(10), pp. 2486-2503, DOI: 10.2166/wst.2021.139.
Boiocchi, R., Behera, C.R., Sherratt, A., DeGroot, C.T., Gernaey, K.V., Sin, G., Santoro, D., 2020, "Dynamic model validation and advanced polymer control for rotating belt filtration as primary treatment of domestic wastewaters," Chem. Eng. Sci., 217, Article 115510, DOI: 10.1016/j.ces.2020.115510.
Amaral, A., Gillot, S., Garrido-Baserba, M., Filali, A., Karpinska, A., Plosz, B., DeGroot, C.T., Bellandi, G., Nopens, I., Takács, I., Lizarralde, I., Jimenez, J., Fiat, J., Rieger, L., Arnell, M., Andersen, M., Jeppsson, U., Rehman, U., Fayolle, Y., Amerlinck, Y., and Rosso, D., 2019, "Modelling gas-liquid mass transfer in wastewater treatment: when current knowledge needs to encounter engineering practice and vice-versa," Water Science & Technology, 80(4), pp. 607-619, DOI: 10.2166/wst.2019.253.
Sherratt, A., DeGroot, C.T., Straatman, A.G., Santoro, D., 2019, "Numerical modelling and control of solids separation using continuously moving fine mesh sieves", Chem. Eng. Sci., 195, pp. 881-893, DOI: 10.1016/j.ces.2018.10.033.
Sherratt, A., DeGroot, C.T., Straatman, A.G., Santoro, D., 2019, "A numerical approach for determining the resistance of fine mesh filters", Trans. CSME, 43(2), pp. 221-229, DOI: 10.1139/tcsme-2018-0071.
Groundwater monitoring, modeling and remediation
Conant, B., Robinson, C. E., Hinton, M. J., & Russell, H. A. J. (2019). A framework for conceptualizing groundwater-surface water interactions and identifying potential impacts on water quality, water quantity, and ecosystems. Journal of Hydrology, 574, 609–627. https://doi.org/10.1016/j.jhydrol.2019.04.050
Popugaeva, D., Kreyman, K., & Ray, A. K. (2018). Study of
Popugaeva, D., Kreyman, K., & Ray, A. K. (2020). Assessment of Khibiny Alkaline Massif groundwater quality using statistical methods and water quality index. Canadian Journal of Chemical Engineering, 98, 205–212. https://doi.org/10.1002/cjce.23601
Rakhimbekova, S., O’Carroll, D. M., Andersen, M. S., Wu, M. Z., & Robinson, C. E. (2018). Effect of transient wave forcing on the behavior of arsenic in a nearshore aquifer. Environmental Science and Technology, 52, 12338–12348. https://doi.org/10.1021/acs.est.8b03659
Sims, A. W., Robinson, C. E., Smart, C. C., & O’Carroll, D. M. (2019). Mechanisms controlling green roof peak flow rate attenuation. Journal of Hydrology,577, 123972. https://doi.org/10.1016/j.jhydrol.2019.123972
Trglavcnik, V., Morrow, D., Weber, K. P., Li, L., & Robinson, C. E. (2018). Analysis of tide and offshore storm-induced water table fluctuations for structural characterization of a coastal island aquifer. Water Resources Research, 54(4), 2749–2767. https://doi.org/10.1002/2017WR020975
Vogel, L. J., O’Carroll, D. M., Edge, T. A., & Robinson, C. E. (2016). Release of Escherichia coli from foreshore sand and pore water during intensified wave conditions at a recreational beach. Environmental Science and Technology,50, 5676–5684. https://doi.org/10.1021/acs.est.6b00707
Recourse recovery
Chowdhury, A. I. A., Gerhard, J. I., Reynolds, D., & O’Carroll, D. M. (2017). Low permeability zone remediation via oxidant delivered by electrokinetics and activated by electrical resistance heating: proof of concept. Environmental Science and Technology, 51(22), 13295–13303. https://doi.org/10.1021/acs.est.7b02231
Gerhard, J. I., Gavin, G. P., & Torero, J. L. (2020). Star: a uniquely sustainable in situ and ex situ remediation process.
Rashwan, T. L., Gerhard, J. I., & Grant, G. P. (2016). Application of self-sustaining
Scholes, G. C., Gerhard, J. I., Grant, G. P., Major, D. W., Vidumsky, J. E., Switzer, C., & Torero, J. L. (2015). Smoldering remediation of coal tar contaminated soil: Pilot field tests of STAR. Environmental Science and Technology, 49(24), 14334–14342. https://doi.org/10.1021/acs.est.5b03177
Zanoni, M. A. B., Torero, J. L., & Gerhard, J. I. (2019). Delineating and explaining the limits of self-sustained
Fadlallah. H., Peerhossaini, H., DeGroot, C.T., Jarrahi, H., 2021, "Motility response to hydrodynamic stress during the growth cycle in active fluid suspensions," ASME J. Fluids Engineering, 143(7), Article 074501, DOI: 10.1115/1.4050054.
Water resources/climate change
Najafi, M. R., & Moradkhani, H. (2013). Analysis of runoff extremes using spatial hierarchical Bayesian modeling. Water Resources Research, 49(10), 6656–6670. https://doi.org/10.1002/wrcr.20381
Najafi, M. R., & Moradkhani, H. (2015). Multi-model ensemble analysis of runoff extremes for climate change impact assessments. Journal of Hydrology, 525, 352–361. https://doi.org/10.1016/j.jhydrol.2015.03.045
Najafi, M. R., Zwiers, F., & Gillett, N. (2015). Attribution of Arctic temperature change to greenhouse gas and aerosol influences. Nature Climate Change, 5, 246–249. https://doi.org/10.1038/nclimate2524
Najafi, M. R., Zwiers, F., & Gillett, N. (2017a). Attribution of the observed spring snowpack decline in British Columbia to anthropogenic climate change. Journal of Climate, 30(11), 4113–4130. https://doi.org/10.1175/JCLI-D-16-0189.1
Najafi, M. R., Zwiers, F. W., & Gillett, N. P. (2017). Attribution of observed streamflow changes in key British Columbia drainage basins. Geophysical Research Letters, 44, 11012–11020. https://doi.org/10.1002/2017GL075016