Research Presentations


Invited Seminars, Presentations, Workshops and Session Chair


Brown, D.G.  Contributor, NSF workshop “Developing Metrics for a National Network of Test-Bed Facilities to Promote Water Innovation”.  16-17 May 2016, National Science Foundation, Arlington, VA.

Brown, D.G., Patterkine, V., Kney, A., Colosi, J., Leiby, V.M.  “Advanced wastewater research and education center at the Easton, PA Water Pollution Control Facility.”  WWEMA 42nd Washington Forum, 13-15 April 2015, Washington, D.C.

Moderator, Sessions A5 and A6, Chemistry: Biochemistry of the Subsurface.  Ninth International Symposium on Subsurface Microbiology.  5-10 October 2014, Pacific Grove, CA.

Leavitt, A.C., Brown, D.G., Kney, A.D., Colosi, J. and Pattarkine, V., “Visionary Session: Development of an advanced wastewater treatment research and education center at the City of Easton wastewater treatment plant.” PennTec 2014, 86th Annual Technical Conference & Exhibition, 1-4 June 2014, State College, PA.

Brown, D.G., “Can we design a passive surface that predictably alters the activity of attached bacteria?”  Presented to the Department of Civil & Environmental Engineering, Villanova University, PA, 5 April 2013.

Brown, D.G., “Effects of surfaces on the activity of attached bacteria: Hypothesis-based study linking bioenergetics to physiochemical surface interactions.” Presented to the Department of Biochemistry and Microbiology, Princeton University, Princeton, NJ, 5 March 2012.

Brown, D.G., “Relationship between bacterial adhesion to a surface and cellular bioenergetics.” Presented to the Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ, 25 March 2011.

Brown, D.G., “Relationship between bacterial adhesion to a surface and cellular bioenergetics.”  Presented to the Department of Civil & Environmental Engineering, Villanova University, Villanova, PA, 26 March 2010.

Brown, D.G., “Relationship between bacterial adhesion to a surface and cellular bioenergetics.”  Presented to the Department of Geology, University at Buffalo, Buffalo, NY, 8 October 2009.

Session Chair, Mechanistic Investigations II: Synthesis of Multiple Factors that Impact Microbial Transport in Porous Media.  1st International Conference on Microbial Transport and Survival in the Subsurface, 10-13 May 2009, Niagara on the Lake, Canada.

Session Chair, Trace Contaminants in Water: Genesis, Rapid Detection and Sustainable Removal Processes – Inorganic and Pharmaceutical Trace Contaminants in Water.  AIChE Annual Meeting, 16-21 November, 2008, Philadelphia, PA.

Panel Member, NSF CAREER Workshop, AEESP Conference, 28 July-1 August, 2007, Virginia Tech, Blacksburg, VA.

Brown, D.G., “Advancements in permeable reactive barriers applicable to former MGP sites.” EPRI MGP Mid-Year Workshop, Bethlehem, PA. June 13-14, 2007.

Brown, D.G., Research seminar presented to the Department of Civil and Environmental Engineering, Lafayette College, Easton, PA, 10 November 2006.

Brown, D.G., Research seminar presented to the Department of Civil and Environmental Engineering, University of Delaware, 20 October 2006.

Brown, D.G., Research seminar presented to the Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 9 December 2005.

Brown, D.G. and Tripathi, S., “Microbial ecology of permeable reactive barriers.” EPRI Advisory Conference, Monterey, CA. February 2-4, 2004.

Brown, D.G. and Gupta, L., “Chemical oxidation effects on coal tar interfacial mass transfer rates.” EPRI Advisory Conference, Monterey, CA. February 2-4, 2004.

Moo-Young, H.K. and Brown, D.G., “Development of the Res-SAT Field Tool.” EPRI Advisory Conference, Monterey, CA. February 2-4, 2004.

Brown, D.G., “Microbial ecology of permeable reactive barriers.” EPRI Advisory Conference, San Antonio, TX, September 9-10, 2003.

Brown, D.G. and Gupta, L., “Chemical oxidation effects on coal tar interfacial mass transfer rates.” EPRI Advisory Conference, San Antonio, TX, September 9-10, 2003.

Session Chair, Colloidal and Interfacial Phenomena in Aquatic Environment Symposium II: Colloids.  74th Colloid and Surface Science Symposium, Lehigh University, Bethlehem, PA, June 19-21, 2000.

Conference Presentations


Brown, D.G., Albert, L.S. and Zhu, H. “Can we design a passive surface that predictably alters the activity of attached bacteria?” 254th ACS National Meeting. 20-24 August 2017, Washington, D.C.

Brown, D.G., Zhu, H. and Albert, L.S. “Bacterially-induced changes in the sorption and bioavailability of ionizable substrates during adhesion due to the charge-regulation effect.” 254th ACS National Meeting. 20-24 August 2017, Washington, D.C.

Shepsko, C.S., SenGupta, A.K. and Brown, D.G. “Simultaneous nutrient removal and recovery of phosphorus from secondary wastewater using a hybrid ion exchange bioreactor.” PennTec 2017, 89th Annual Technical Conference & Exhibition. 4-7 June 2017, Pocono Manor, PA.

Zingale, C., Albert, L.S., and Brown, D.G.  “Impact of the charge-regulation effect on the activity of attached bacteria.”  PennTec 2016, 88th Annual Technical Conference & Exhibition. 5-8 June, 2016, State College, PA. (PAPER AWARD).

Shepsko, C.S., Brown, D.G., and SenGupta, A.K.  “Simultaneous removal of nitrate and phosphate via a hybrid ion-exchange bioreactor.  PennTec 2016, 88th Annual Technical Conference & Exhibition. 5-8 June, 2016, State College, PA.

Dong, H., Brown, D.G., and SenGupta, A.K.  “Sustainable ion-exchange brackish water desalination as an alternative to reverse osmosis.”  PennTec 2016, 88th Annual Technical Conference & Exhibition. 5-8 June, 2016, State College, PA.  

Zhu, H., Brown, D.G., Fox, J.T. and Redding, A.  “Effects of Surface Treatments for Granular Activated Carbon on the Bioavailability of Sorbed Ionizable Substrates.”  New England Graduate Student Water Symposium. 11-13 September 2015, University of Massachusetts, Amherst.

Dong, H., Brown, D.G., and SenGupta, A.K. “Sustainable Ion Exchange Brackish Water Desalination as an Alternate to RO.”  New England Graduate Student Water Symposium. 11-13 September 2015, University of Massachusetts, Amherst.

Brown, D.G., Lennon, G.P. and Zhu, J. “Enhanced Transport of Bacteria Through Unsaturated Porous Media in the Presence of Surfactants.”  New England Graduate Student Water Symposium. 11-13 September 2015, University of Massachusetts, Amherst.

Tian, Y., Brown, D.G., and SenGupta, A.K.  “Improved stability of methane-producing anaerobic biological reactors through novel use of ion-exchange fibers.”  2015 AEESP Research and Education Conference.  13-16 June 2015, Yale University, New Haven, CT.

Zhu, H., Brown, D.G., Fox, J.T., and Redding, A.  “Impact of surface treatments on the bioavailability of ionizable substrates absorbed onto granular activated carbon.”  PennTec 2015, 87th Annual Technical Conference & Exhibition.  31 May – 3 June 2015, Lancaster, PA. (PAPER AWARD).

Brown, D.G., Lennon, G.P., and Zhu, J.  “Size-excluded transport of bacteria through porous media in the presence of surfactants.”, 2015 Groundwater Symposium. 6 May 2015, State College, PA.

Brown, D.G., Tripathi, S., and Lennon, G.P.  “Size-excluded transport of bacteria through unsaturated porous media in the presence of surfactants.”  Ninth International Symposium on Subsurface Microbiology.  5-10 October 2014, Pacific Grove, CA.

Albert, L.S., Zhu, H., and Brown, D.G. “Charge-regulated variation in local pH and its effects on the bioenergetics of attached bacteria under non-growth conditions.”  Ninth International Symposium on Subsurface Microbiology.  5-10 October 2014, Pacific Grove, CA.

Zhu, H., Albert, L.S., Fox, J.T., Redding, A., and Brown, D.G. “Impacts of the charge-regulation effect on the growth of attached bacteria and the bioavailability of ionizable substrates.” Ninth International Symposium on Subsurface Microbiology.  5-10 October 2014, Pacific Grove, CA.

Zhu, H., L.S. Albert, and D.G. Brown.  “Impacts of the physiochemical charge-regulation effect on the growth of attached bacteria.”  ACS 2014 Colloid & Surface Science Symposium, June 22-25, University of Pennsylvania, Philadelphia, PA.

Albert, L.S., H. Zhu and D.G. Brown “Charge-regulated variation between two adhering surface and its ability to affect bioenergetics of attached bacteria under non-growth conditions.”  ACS 2014 Colloid & Surface Science Symposium, June 22-25, University of Pennsylvania, Philadelphia, PA.

Lennon, G.P., Ochs, J.B. and Brown, D.G.  “Student Learning Outcomes: Effectively Satisfying Multiple Accreditation Requirements.”  2014 Annual Conference, American Society for Engineering Education, June 15-18, Indianapolis, IN.

Albert, L.S., H. Zhu and D.G. Brown.  “Effects of localized surface pH on the metabolic activity of attached bacteria.”  2014 ISMET Conference, May 13-15, State College, PA.

Lin, H., Suleiman, M.T., Helm, J. Brown, D.G. “Experimental Measurement of Bonding Strength between Two Glass Beads Treated by Microbial-Induced Calcite Precipitation (MICP).”  2014  GeoCongress, Geo-Characterization and Modeling for Sustainability, February 23-26, Atlanta, GA.

Zhu, H., Albert, L.S. and Brown, D.G., “Effects of adhesion on bacterial growth kinetics.” Presented to the 244th ACS National Meeting, 19-23 August, 2012, Philadelphia, PA.

Albert, L.S., Zhu, H. and Brown, D.G., “Impact of surface functional groups on the metabolic activity of adhered bacteria.” Presented to the 244th ACS National Meeting, 19-23 August, 2012, Philadelphia, PA.

Brown, D.G. and Tripathi, S., “Bacterial transport through unsaturated porous media in the presence of anionic and nonionic surfactants.” Presented to the 13th IACIS International Conference on Surface and Colloid Science and 83rd ACS Colloid and Surface Science Symposium, 14-19 June 2009, Columbia University, New York, NY.

Brown, D.G. and Hong, Y., “Relationship between bacterial adhesion to a surface and cellular bioenergetics.” Presented to the 13th IACIS International Conference on Surface and Colloid Science and 83rd ACS Colloid and Surface Science Symposium, 14-19 June 2009, Columbia University, New York, NY.

Brown, D.G. and Hong, Y., “Variation of bacterial metabolic activity upon adhesion to a solid surface.” Presented to the 1st International Conference on Microbial Transport and Survival in the Subsurface, 10-13 May, 2009, Niagara on the Lake, Canada.

Brown, D.G. and Tripathi, S., “Impacts of nonionic and anionic surfactants on bacterial transport through unsaturated porous media.” Presented to the 1st International Conference on Microbial Transport and Survival in the Subsurface, 10-13 May 2009, Niagara on the Lake, Canada.

Brown, D.G., “Relationship between micellar and hemi-micellar processes and the bioavailability of surfactant-solubilized hydrophobic organic compounds.” Presented to the AIChE Annual Meeting, 16-21 November 2008, Philadelphia, PA.

Hong, Y. and Brown, D.G., “Effects of adhesion on bacterial metabolic activity.”  Presented to the 235th American Chemical Society National Meeting & Exposition.  6-10 April 2008. New Orleans, LA.

Hong, Y. and Brown, D.G., “Electrostatic behavior of the charge-regulated bacterial cell surface.”  Presented to the 235th American Chemical Society National Meeting & Exposition.  6-10 April 2008. New Orleans, LA.

Tripathi, S. and Brown, D.G., “Effects of surfactants on bacterial transport through unsaturated porous media.”  Presented to the 235th American Chemical Society National Meeting & Exposition.  6-10 April 2008. New Orleans, LA.

Tripathi, S. and Brown, D.G., “Inactivation of E. coli at the air/water interface.” Presented to the Joint International Symposia for Subsurface Microbiology (ISSM 2005) and Environmental Biotechnology (ISEB XVII). 14-19 August 2005. Jackson Hole, WY.

Abramson, A. and Brown, D.G., ” Collision efficiency distribution of a bacterial suspension flowing through porous media and implications for field-scale transport.” Presented to the Joint International Symposia for Subsurface Microbiology (ISSM 2005) and Environmental Biotechnology (ISEB XVII). 14-19 August 2005. Jackson Hole, WY.

Brown, D.G. “Determination of the collision efficiency distribution of a colloidal suspension flowing through a packed bed.” American Chemical Society 229th Spring National Meeting, San Diego, CA, March 13-17, 2005.

Jaffé, P.R., Lovley, D.R., Komlos, J. and Brown, D.G., “Hydrogen as an indicator to assess biological activity during trace-metal bioremediation.” 7th Annual NABIR PI Workshop, Warrenton, VA, March 15-17, 2004.

Komlos, J., Jaffé, P.R., Brown, D.G., and Lovley, D.R., “Hydrogen as an indicator to assess biological activity during bioremediation under dual electron donor conditions.” 34th Mid-Atlantic Industrial and Hazardous Waste Conference, Cook College, Rutgers University, New Brunswick, NJ, September 20-21, 2002.

Jaffé, P.R., Komlos, J., Brown, D.G., and Lovley, D.R., “Hydrogen as an indicator to assess biolgical activity during trace-metal bioremediation.” AGU Spring Meeting, Washington, DC, May 28-31, 2002.

Jaffé, P.R., Brown, D.G., Komlos, J., and Lovley, D.R., “Hydrogen as an indicator to assess biolgical activity during trace-metal bioremediation.” 5th Annual NABIR PI Workshop, Warrenton, VA, March 18-20, 2002.

Brown, D.G. and Jaffé, P.R., “Effects of nonionic surfactants on bacterial transport through porous media.” Presented to the American Geophysical Union 2001 Fall Meeting, San Fransisco, CA, December 10-14, 2001.

Rainwater, J.L., D.G. Brown and P.R. Jaffé. “Design of surfactant-enhanced bioslurry reactors: laboratory experiments and simulations.” Presented to the Hazardous Substance Research Center Conference, Pacific Grove, CA, July 9-12, 2000.

Brown, D.G. and Jaffé, P.R., “Effects of nonionic surfactants on bacterial transport through porous media.” Presented to the 74th Colloid and Surface Science Symposium, Lehigh University, Bethlehem, PA, June 19-21, 2000.

Brown, D.G. and Jaffé, P.R., “Operational regimes for surfactant-enhanced PAH biodegradation.” Presented to the 1999 International Symposium on Subsurface Microbiology, Vail, CO, August 22-27, 1999.

Brown, D.G., Stencel, J.R., and Jaffé, P.R., “Bacteria transport in sand column experiments: effect of media preparation.” Presented to the 1999 International Symposium on Subsurface Microbiology, Vail, CO, August 22-27, 1999.

Peters, C.A., Knightes, C.D., and Brown, D.G., “Long-term composition dynamics of PAH-containing NAPLs and implications for risk assessment.” Presented to the 1999 Conference on Hazardous Waste Research, St. Louis, MO, May 25-27, 1999.

Brown, D.G. and Jaffé, P.R., “Effects of surfactants on bacterial transport through a porous media.” Presented to the 5th International In Situ and On-Site Bioremediation Symposium, San Diego, CA, April 19-22, 1999.

Brown, D.G., Stencel, J.R., and Jaffé, P.R., “Porous media preparation for bacteria filtration experiments using sand columns.” Presented to the New Jersey American Water Works Association Annual Conference, Atlantic City, NJ, March 24-25, 1999. Received Paper Award.

Brown, D.G., Guha, S. and Jaffé, P.R., “Modeling biodegradation of phenanthrene in the presence of nonionic surfactant.” Presented to the 4th International In Situ and On-Site Bioremediation Symposium, New Orleans, LA, April 28-May 1, 1997.

Sun, S., Guha, S., Brown, D.G., and Jaffé, P.R., “The effect of a surfactant’s hydrophilic chain length on the surfactant-enhanced mass transfer between an organic and an aqueous phase.” Presented to the I&EC Special Symposium, American Chemical Society, Birmingham, AL, September 9-11, 1996.

Brown, D.G. and Stone, K.W., “A High Accuracy/Low Cost Tracking System for Solar Concentrators Using a Neural Network”, presented to the 28th Intersociety Energy Conversion Engineering Conference, Atlanta, Georgia, August 1993.

Blackmon, J.B., McNichols, J.L., Brown, D.G., and Drubka, R.E., “Liquid Droplet Radiator: Environmental Interactions”, presented to the 7th Annual Space Power Workshop, Air Force Space Command, El Segundo, CA, April 1989.

Blackmon, J.B., and Brown, D.G., “Liquid Droplet Radiator Systems Analysis”, presented to the LDR Workshop, Air Force Astronautics Laboratory, Edwards Air Force Base, CA, December 1988. (Invited)

Blackmon, J.B., Brown, D.G., and Drubka, R.E., “Liquid Droplet Radiator Development”, presented at the 5th Symposium on Space Nuclear Power Systems, Albuquerque, NM, January 1988.

Blackmon, J.B., McNichols, J.L., Brown, D.G., and Drubka, R.E., “Liquid Droplet Radiator: Environmental Interactions”, presented to the 7th Annual Space Power Workshop, Air Force Space Command, El Segundo, CA, April 1989.

Blackmon, J.B., and Brown, D.G., “Liquid Droplet Radiator Systems Analysis”, presented to the LDR Workshop, Air Force Astronautics Laboratory, Edwards Air Force Base, CA, December 1988. (Invited).

Blackmon, J.B., Brown, D.G., and Drubka, R.E., “Liquid Droplet Radiator Development”, presented at the 5th Symposium on Space Nuclear Power Systems, Albuquerque, NM, January 1988.