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• Jason Gerhard
• Publications 2012-2016

Publications 2012-2016

Accepted Referred Journals

• Rashwan, T.L., J.I. Gerhard and G. Grant (2016). Self-sustaining smouldering combustion as a novel destruction method for wastewater biosolids. Waste Management, In Press. doi:10.1016/j.wasman.2016.01.037.
  
  
• Rashwan, T.L., J.I. Gerhard and G. Grant (2016).  Application of self-sustaining smouldering combustion for the destruction of wastewater biosolids.  Waste Management, 50:201-212.
  
  
• Yermán, L., H. Wall, J. Torero, J.I. Gerhard and Y-L Cheng (2016). Smouldering combustion as a treatment technology for faeces: sensitivity to key parameters. Combustion Science and Technology. doi: 0.1080/00102202.2015.1136299.
  
  
• Scholes, G., J.I. Gerhard, G.P. Grant, D.W. Major and J.E. Vidumsky (2015). Smoldering remediation of coal tar contaminated soil: Pilot field tests of STAR. Environmental Science and Technology, 49(24):14334-14342.
  
  
• Molnar, I.L., W.P. Johnson, J.I. Gerhard, C.S. Willson and D.M. O'Carroll (2015).  Predicting colloid transport through saturated porous media: A critical review. Water Resources Research, 51(9):6804-6845.
  
  
• Molnar, I.L., J.I. Gerhard, C. Willson and D.M O’Carroll (2015). The impact of immobile zones on the transport and retention of nanoparticles in porous media. Water Resources Research, 51(11):8973-8994.
  
  
• Mumford, K., N. Mustafa and J.I. Gerhard (2015). Probabilistic risk assessment of contaminant transport in groundwater and vapour intrusion following remediation of a contaminant source. Stochastic Environmental Research and Risk Assessment, DOI 10.1007/s00477-015-1156-8, 1-15.
  
  
• Hasan, T., J.I. Gerhard, R. Hadden and G. Rein (2015). Self-sustaining smouldering combustion of coal tar for the remediation of contaminated sand: Two-Dimensional Experiments and Computational Simulations. Fuel, 150:288-297.
  
  
• Salman, M., J.I. Gerhard, D.W. Major, P. Pironi, and R.M. Hadden (2015). Remediation of trichloroethylene-contaminated soils by STAR technology using vegetable oil smoldering. Journal of Hazardous Materials, 285:346–355.
  
  
• Yermán, L., R.M. Hadden, J. Carrascal, I. Fabris, D. Cormier, J.L. Torero, J.I. Gerhard, M. Krajcovic, P. Pironi and Y.L. Cheng (2015). Smouldering combustion as a treatment technology for faeces: exploring the parameter space. Fuel, 147:108-116.
  
  
• Power, C., J.I. Gerhard, P. Tsourlos, P. Soupios, K. Simyrdanis and M. Karaoulis (2014). Improved time-lapse electrical resistivity tomography monitoring of dense non-aqueous phase liquids with surface-to-horizontal borehole arrays, Journal of Applied Geophysics, 112:1-13.
  
  
• Power, C., J.I. Gerhard, M. Karaoulis, P. Tsourlos and A. Giannopoulos (2014). Evaluating four-dimensional time-lapse electrical resistivity tomography for monitoring DNAPL source zone remediation. Journal of Contaminant Hydrology, 162-163:27-46.
  
  
• Switzer, C., P. Pironi, J.I. Gerhard, G. Rein, and J.L. Torero (2014). Volumetric scale-up of smouldering remediation of contaminated soils. Journal of Hazardous Materials, 268:51-60.
  
  
• Molnar, I., C.S. Willson, D.M. O’Carroll, M. Rivers and J.I. Gerhard (2014). A Method for Obtaining Silver Nanoparticle Concentrations Within Porous Media via Synchrotron X-Ray Microtomography. Environmental Science and Technology, 48, pp.1114-1122.
  
  
• Mustafa, N., K. Mumford, J.I. Gerhard and D.M. O’Carroll (2014). A Three-Dimensional Numerical Model for Linking Community-wide Risks. Journal of Contaminant Hydrology, 156:38-51.
  
  
• Power, C., Gerhard, J.I., Tsourlos, P. and A. Giannopoulos (2013). A new coupled model for simulating the mapping of dense nonaqueous phase liquids (DNAPLs) using electrical resistivity tomography (ERT). Geophysics; 78(4), EN1-EN15, doi: 10.1190/geo2012-0395.1.
  
  
• Drake, S.S., D.M. O’Carroll and J.I. Gerhard (2013). Wettability contrasts between fresh and weathered diesel fuels. Journal of Contaminant Hydrology, 144:46-57.
  
  
• Brovelli, A., D.A. Barry, C. Robinson and J.I. Gerhard (2012). Analysis of acidity production during enhanced reductive dechlorination using a simplified reactive transport model. Advances in Water Resources, 43:14–27.
  
  
• Alexandra, R., J.I. Gerhard and B.H. Kueper (2012). Hydraulic displacement of dense non-aqueous phase liquids for source zone stabilization, Journal of Ground Water, 50(5):765-774.
  
  
• MacPhee, S.L., J.I. Gerhard and G. Rein (2012). A novel method for simulating smoldering propagation and its application to STAR (Self-sustaining treatment for active remediation), Environmental Modelling and Software, 31:84-98.

Papers in Referred Conference Proceedings

• Yermán, L., H. Wall, J.L. Torero, J.I. Gerhard, I. Fabris, D. Cormier, Y.L. Cheng (2015).  Self-sustaining smouldering combustion of faeces as treatment and disinfection method.  Paper no. 3134733, APCChE 2015 Congress, Melbourne, Australia, Sept.

Conference Papers Accepted on Abstract Submission

• Wall, H. L. Yerman, J.L. Torero, J.I. Gerhard, I. Fabris, D. Cormier and Y.L. Cheng (2015). Investigation on self-sustaining smouldering of faeces: Key parameters and scaling effects. Paper 10, SENG National Conference, Adelaide, Australia, Sept.
  
  
• Rashwan, T.L., J. I. Gerhard and G. Grant (2015). Self-sustaining smoldering as an energy efficient alternative for managing biosolids, Paper published in 9th U. S. National Combustion Meeting, Cincinnati, Ohio, May.

Published Abstracts and Papers at Professional Meetings

• Power, C., J.I. Gerhard, P. Tsourlos, P. Soupios, K. Simyrdanis and M.,Karaoulis (2015). Geoelectrical monitoring of dense non-aqueous phase liquids with surface-to-horizontal borehole ERT. Geoelectrical Monitoring Conference, Vienna, Nov.
  
  
• Brown, J., J.I. Gerhard, G. Grant and G. Scholes (2015). In Situ Remediation of Coal Tar by STAR: Self-Sustaining Propagation Across Clean Sand Gaps. International Association of Hydrogeologists Conference, Waterloo, ON, Oct. 
  
  
• Solinger, R., J.I. Gerhard, G. Grant and G.Scholes (2015). Two-Dimensional Numerical Modelling of STAR to Optimize Smouldering Combustion for NAPL Remediation. International Association of Hydrogeologists Conference, Waterloo, ON, Oct.
  
  
• Zanoni, M., J.I. Gerhard and J. Torero (2015). Smouldering Combustion of NAPLs in Soil: Advancing Process Understanding in the Context of STAR Remediation. International Association of Hydrogeologists Conference, Waterloo, ON, Oct.
  
  
• Overbeeke, G., J.I. Gerhard, E. Edwards and L. Lomheim (2015). Microbial Subsurface Repopulation Following In Situ STAR Remediation. International Association of Hydrogeologists Conference, Waterloo, ON, Oct.
  
  
• Rashwan, T.L., J. I. Gerhard, G. Grant, 2015. Self-sustaining smoldering as an energy efficient alternative for managing biosolids, 9th U. S. National Combustion Meeting, Cincinnati, Ohio, May.
  
  
• Cheng, Y.L., M.T. Kortschot, J.I. Gerhard, J.L. Torero, R. Saini, A.X. Fernandes, Z. Fishman, T. Bartczak, D. Liao, I. Fabris, D. Cormier, J.C. Tirrado, Luis Yermán, 2015. A household sanitation process based on integrated diversion/dewatering, drying/smoldering of solid waste, and pasteurization of liquid waste, Third International Fecal Sludge Management Conference, Hanoi, Viet Nam, January.
  
  
• Gerhard, JI, C.Power, P. Tsourlos, M. Karaoulis, A. Giannopoulos, P. Soupios, K. Simyrdanis, 2014. Mapping Contaminant Remediation with Electrical Resistivity Tomography, Abstract H51M-0788. Fall Meeting, American Geophysical Union, San Francisco, CA., Dec.
  
  
• Molnar, I.L., DM. O’Carroll, JI. Gerhard, and CS. Willson, 2014. From Pore to Core: Do Engineered Nanoparticles Violate Upscaling Assumptions? A Microtomographic Investigation, Abstract H53A-0837. Fall Meeting, American Geophysical Union, San Francisco, CA., Dec.
  
  
• Power, C., JI Gerhard, P. Tsourlos, M. Karaoulis, A. Giannopoulos, P. Soupios, K. Simyrdanis, 2014. Improved Time-lapse ERT Monitoring of Dense Non-aqueous phase Liquids (DNPLs) with Surface-to-horizontal Borehole Arrays. 20th European Meeting of Environmental and Engineering Geophysics, Athens, Greece, Sep.
  
  
• Gerhard, J.I, B.H.Kueper, and B.Sleep, 2014. Modeling Chlorinated Solvent Source Zone Remediation. Ninth International Conference Remediation of Chlorinated and Recalcitrant Compounds, Monterey, California, May.
  
  
• Gerhard, J.I., M. Salman, P. Pironi, R. Hadden, D.W. Major, G.P. Grant, 2014. Remediation of VOC-Contaminated Soils by STAR Technology using Vegetable Oil Smoldering. Ninth International Conference Remediation of Chlorinated and Recalcitrant Compounds, Monterey, California, May
  
  
• Kinsman, L., J.I. Gerhard, J.L. Torero, G. Scholes, C. Murray, 2013. Upscaling Self-Sustaining Treatment for Active Remediation (STAR): Experimental Study of Scaling Relationships for Smouldering Combustion to Remediate Soil, Abstract H41H-1351. Fall Meeting, American Geophysical Union, San Francisco, CA., Dec
  
  
• Molnar, I.L., D.M. O'Carroll, C.S. Willson, and J.I. Gerhard, 2013. Abstract H33C-1368, The Influence of Pore Network Geometry on Silver Nanoparticle Transport through Soil, Fall Meeting, American Geophysical Union, San Francisco, CA., Dec
  
  
• Hasan, T., J.I. Gerhard, R. Hadden, P. Pironi, G. Rein, 2013. Smouldering Combustion for Soil Remediation: Two-dimensional Experiments and Modelling. Abstract H41H-1352. Fall Meeting, American Geophysical Union, San Francisco, CA., Dec.
  
  
• Drake, S.S., D.M. O’Carroll, and J.I. Gerhard, 2013. Hydraulic Property Alterations due to Wettability Induced Changes by Diesel Fuels. General Assembly, European Geosciences Union, Vienna, April.
  
  
• Gavin Grant, Grant Scholes, David Major, Jason Gerhard, Paolo Pironi, Jose Torero, and Christine Switzer , 2013. Self-Sustaining Treatment for Active Remediation (STAR): Lessons Learned and Scale up from the Laboratory to the Field. Platform Presentation, AquaConSoil 2013: 12th International Conference on Groundwater Soil Systems and Water Resource Management, Barcelona, Spain, April.
  
  
• Grant, G.P., D. Major, J.I. Gerhard, J.L. Torero, 2013. Self-Sustaining Treatment for Active Remediation (STAR): Ex Situ Applications to Treat Contaminated Soils, Waste Oils and Lagoon Sludges. Remediation Technology (Remtec) Summit, Denver, Colorado, March.
  
  
• Gerhard, JI, JL Torero, JL, D. Major, G. Grant, G Scholes, P Pironi, T Hasan, M Salman, 2012, Abstract H33N-08, New Developments in Contaminant Remediation by Smoldering Combustion. 2012 Fall Meeting, American Geophysical Union, San Francisco, Calif., Dec.
  
  
• Molnar, I.L., D.M. O'Carroll, C.S. Willson, and J.I. Gerhard, 2012. Abstract H11M-02, Imaging the Transport of Silver Nanoparticles Through Soil With Synchrotron X-ray Microtomography, 2012 Fall Meeting, American Geophysical Union, San Francisco, Calif., Dec.
  
  
• Power, C., Karaoulis, M., Gerhard, J.I., Tsourlos, P., and A. Giannopoulos, 2012. Abstract H41K-03, Evaluating time-lapse ERT for monitoring DNAPL remediation via numerical simulation. 2012 Fall Meeting, American Geophysical Union, San Francisco, Calif., Dec.
  
  
• Mumford, KG., N. Mustafa, J.I. Gerhard, and D.M. O'Carroll, 2012. Abstract H32F-07, Comparing risk assessment at the site and community scales via Monte Carlo simulations with a new coupled groundwater-vapour-indoor air model. 2012 Fall Meeting, American Geophysical Union, San Francisco, Calif., Dec.
  
  
• Fishman, Z., Y.M.T. Jung, P. Pironi, M. Krajcovic, S. Melamed, M. Webb, J.L. Torero, J. I. Gerhard, L. L.L. Diosady, Y. Lawryshyn, E. Edwards, M.T. Kortschot, Y.L. Cheng, 2012. A Unit Operations Approach for Rapid Disinfection of Human Waste Based on Drying/Smoldering of Solid and Sand Filtration/UV Disinfection of Liquid Waste, Faecal Sludge Management Seminar, International Convention Centre, Durban, 29-31 October.
  
  
• Kinsman, L. C. Robinson, J.I. Gerhard, G. Bickerton, and J. Roy. Characterizing Groundwater Flows in the Alberta Oil Sands using Major Ions. 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• G. Scholes, J.I. Gerhard, D. Major, 2012. Scale up of Ex Situ Application of Self Sustaining Treatment for Active Remediation (STAR) – Column Scale to Prototype Reactor. 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• Power, C., Gerhard, J.I., Tsourlos, P., and A. Giannopoulos, 2012. Time-lapse Monitoring of Subsurface Remediation with Electrical Resistivity Tomography Explored via Coupled-Model Simulations. 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• Molnar, I.L., D.M. O'Carroll, C.S. Willson, and J.I. Gerhard, 2012. Employing Synchrotron X-Ray Microtomography to Study Silver Nanoparticle Transport Through Soils, 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• Salman, M., J.I. Gerhard, and D. W. Major, 2102. Self-Sustaining Treatment for Active Remediation (STAR) for Trichloroethylene-Contaminated Soils via Vegetable Oil Smouldering, 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• Rory M. Hadden, Paolo Pironi & Jason I. Gerhard, G. Grant, 2012. STAR (Self-sustaining Treatment for Active Remediation) Operability Across a Range of Soil and Contaminant Types. 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• Hasan, T., J.I. Gerhard, P. Pironi, R. Hadden, G. Rein, J. Torero, 2012. Validation of Numerical Model for Self Sustaining Treatment for Active Remediation (STAR) for Two-Dimensional Smouldering front Propagation. 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• Mustafa, N., K. Mumford, J.I. Gerhard, and D.M. O'Carroll, 2012. Assessing the Risk of Organic Contaminants to Groundwater and Vapour Intrusion at the Community Scale. 39th International Association of Hydrologists Congress, Niagara Falls, September.
  
  
• G.P. Grant, G. Scholes,D. Major, M. Watling, J.I. Gerhard, J.L. Torero, and C. Switzer, 2012. Self-Sustaining Treatment for Active Remediation (STAR): In Situ Pilot Testing and Scale-Up for the Smoldering Combustion Treatment of Coal Tar. Eighth International Conference Remediation of Chlorinated and Recalcitrant Compounds, Monterey, California, May.
  
  
• G. Scholes, G.P. Grant, D. Major, J.I. Gerhard, P. Pironi, J.L. Torero, and C. Switzer, 2012. Self-Sustaining Treatment for Active Remediation (STAR): Overview of the Technology and Lessons Learned from Six Years of Treatability Testing. Eighth International Conference Remediation of Chlorinated and Recalcitrant Compounds, Monterey, California, May.
  
  
• Hadden, R. M., Gerhard, J. I., Rein, G., Torero, J. L., 2012, Influence of sample orientation and fuel diameter on smouldering of liquids for application to STAR, International Symposium on Combustion, Warsaw, August.
  
  
• Molnar, I.L., D.M. O'Carroll, C.S. Willson, and J.I. Gerhard, 2012. Investigating Silver Nanoparticle Transport in Soil via Synchrotron X-Ray Microtomography, 22nd V.M. Goldschmidt Conference, Montréal, June.
  
  
• Hadden, R. M., Gerhard, J. I., Rein, G., Torero, J. L., 2012, Influence of sample orientation and fuel diameter on smouldering of liquids for application to STAR (Self-sustaining Treatment for Active Remediation), Combustion Institute Canadian Section, Toronto, May.
  
  
• Mustafa, N., K. Mumford, J.I. Gerhard, and D.M. O'Carroll, 2012. Assessing the Risk of Organic Contaminants at Off-Site Receptors, 2012 RPIC Federal Contaminated Sites National Workshop, April.
  
  
• Power, C., Gerhard, J.I., Tsourlos, P., and A. Giannopoulos, 2012. Mapping Site Remediation with Electrical Resistivity Tomography Explored via Coupled-Model , Abstract H31D-1191, Fall Meeting of the American Geophysical Union, San Francisco, December.
  
  
• Molnar, I.L., D.M. O'Carroll, J.I. Gerhard and C.S. Willson, 2012. Impact of mineral isoelectric point on subsurface/NAPL wettability, American Chemical Society Colloids and Surface Science Symposium, Montreal, June.
  
  
• Grant, G.P., G. Scholes, D. Major, M. Watling, J.I. Gerhard, J.L. Torero, C. Switzer, 2012. Self-Sustaining Treatment for Active Remediation (STAR): In Situ Pilot Testing and Scale-up for the Smoldering Combustion Treatment of Coal Tar, Electric Power Research Institute MGP Symposium, Chicago, Illinois, March.