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John Lenhart

  • Associate Professor, Civil, Envir & Geod Eng
  • 2070 Neil Avenue
    417A
    Columbus, OH 43210
  • 614-688-8157

Honors

  • 2009

    Excellence in Review Award. .

  • 2005

    College of Engineering Lumley Interdisciplinary Research Award. The Ohio State University.

  • 1998-2000

    National Academy of Science Postdoctoral Fellowship.

Journal Articles

2010

  • X. Li, John J. Lenhart, H.W. Walker, 2010, "Dissolution-Accompanied Aggregation Kinetics of Silver Nanoparticles." Langmuir
  • Y-S. Hwang, John J. Lenhart, 2010, "Transport of Dicarboxylic Acids through Hematite-Coated Sand." Chemosphere 78, 1049 - 1055.
  • Q. Wang, John J. Lenhart, Walker, H.W., 2010, "Recovery of Metal Cations from Lime Softening Sludge using Donnan Dialysis." Journal of Membrane Science 360, 469 - 475.
  • John J. Lenhart, R. Heyler, E.M. Walton, S.E. Mylon, 2010, "The Influence of Dicarboxylic Acid Structure on the Stability of Colloidal Hematite." Journal of Colloid and Interface Science 345, 556 - 560.
  • P.J. Fox, J. Lee and J.J. Lenhart, 2010, "Coupled Consolidation and Contaminant Transport in Compressible Porous Media." International Journal of Geomechanics

2009

  • Y-S. Hwang, John J. Lenhart, 2009, "Surface Complexation Modeling of Dual-Mode Adsorption of Organic Acids." Journal of Colloid and Interface Science 336, 200 - 207.
  • John J. Lenhart, Janggeun Lee, Yu Sik Hwang, and Patrick J. Fox, 2009, "PCB Transport from Contaminated Sediments during In Situ Capping." Journal of ASTM International 6, no. 8,
  • J. Lee, P.J. Fox, John J. Lenhart, 2009, "Investigation of Consolidation-Induced Solute Transport. 1. Effect of Consolidation on Solute Transport Parameters." ASCE Journal of Geotechnical and GeoEnvironmental Engineering 135, no. 9, 1228 - 1238.
  • K. Raman, John J. Lenhart, 2009, "Electrolytic Magnesium Recovery from Drinking Water Membrane Residuals." Journal of Applied Electrochemistry 39, 1683 - 1693.

2008

  • Y-S. Hwang, John J. Lenhart, 2008, "Adsorption of C4-dicarboxylic acids at the hematite/water interface." Langmuir 24, 13934 - 13943.
  • Y-S. Hwang, John J. Lenhart, 2008, "The dependence of hematite site-occupancy standard state triple layer model parameters on inner-layer capacitance." Journal of Colloid and Interface Science 319, 206 - 213.
  • C-M. Cheng, Y-S. Hwang, John J. Lenhart, H.W. Walker, 2008, "Mechanisms for organic acid induced leaching of fixated FGD material." Fuel 87, 3137 - 3146.

2007

  • Y-S. Hwang, J. Liu, John J. Lenhart, C.M Hadad, 2007, "Surface Complexes of Phthalic Acid at the Hematite/Water Interface." Journal of Colloid and Interface Science 307, 124 - 134.

2006

  • D. Chen, Linda K. Weavers, H. Walker, John J. Lenhart, 2006, "Ultrasonic Control of Ceramic Membrane Fouling Caused by Dissolved Organic Matter and Silica Particles: Effect of Solution Chemistry." Journal of Membrane Science 276, 135 - 144.

2004

  • John J. Lenhart, J.E. Saiers, 2004, "Adsorption of Natural Organic Matter to Air-Water Interfaces During Transport through Unsaturated Porous Media." Environmental Science and Technology 38, 120 - 126.

2003

  • J.E. Saiers, John J. Lenhart, 2003, "Ionic-Strength Effects on Colloid Transport and Interfacial Reactions in Partially Saturated Porous Media." Water Resources Research 39, no. 9,
  • John J. Lenhart, Saiers, J.E, 2003, "Colloid Mobilization in Water-Saturated Porous Media under Transient Chemical Conditions." Environmental Science and Technology 37, 2780 - 2787.
  • J.E. Saiers, John J. Lenhart, 2003, "Colloid Mobilization and Transport within Unsaturated Porous Media Under Transient-Flow Conditions." Water Resources Research 39, no. 1,

2002

  • John J. Lenhart, J.E. Saiers, 2002, "Transport of Silica Colloids Through Unsaturated Porous Media: Experimental Results and Model Comparisons." Environmental Science and Technology 36, 769 - 777.

2001

  • John J. Lenhart, J.R. Bargar, J.A. Davis, 2001, "Spectroscopic Evidence for Ternary Surface Complexes in the Lead(II)-Malonic Acid-Hematite System." Journal of Colloid and Interface Science 234, 449 - 452.

2000

  • J.R. Bargar, R.L. Reitmeyer, John J. Lenhart, J.A. Davis, 2000, "Characterization of U(VI)-Carbonato Ternary Complexes of Hematite. I. EXAFS and Electrophoretic Mobility Measurements." Geochimica et Cosmochimica Acta 64, 2737 - 2749.
  • John J. Lenhart, S.E. Cabaniss, P. MacCarthy, B.D. Honeyman, 2000, "Uranium(VI) Complexation with Citric, Humic and Fulvic Acids." Radiochimica Acta 88, 345 - 353.

1999

  • R.J. Murphy, John J. Lenhart, B.D. Honeyman, 1999, "The Binding of Thorium and Uranium to Hematite in the Presence of Natural Organic Matter." Colloids and Surfaces: A. Physicochemical and Engineering Aspects 157, 47 - 62.
  • John J. Lenhart, B.D. Honeyman, 1999, "Uranium(VI) Adsorption to Hematite in the Presence of Humic Acid." Geochimica et Cosmochimica Acta 63, 2891 - 2901.

1997

  • John J. Lenhart, L.A. Figueroa, B.D. Honeyman, D. Kaneko, 1997, "Modeling the Adsorption of U(VI) onto Animal Chitin Using Coupled Mass Transfer and Surface Complexation Models." Colloids and Surfaces: A. Physicochemical and Engineering Aspects 120, 243 - 254.
  • P.H. Santschi, John J. Lenhart, B.D. Honeyman, 1997, "Heterogeneous Processes Affecting Trace Element Distribution in Estuaries: The Role of Natural Organic Matter." Marine Chemistry 58, 99 - 125.

Presentations

  • "The Design and Testing of a CSTR System for U(VI) Treatment Which Couples Surface Chemistry, Reaction Kinetics, and Mass Transport." 1993, Presented at 205th ACS National Meeting, Denver,
  • "Evaluating PCB Transport from Contaminated Sediments during In Situ Capping." 2007, Presented at 233rd ACS National Meeting, Chicago,
  • "Evaluating the Release of Arsenic from Spent Adsorbent Media Under Landfill Conditions." 2010, Presented at 2010 AWWA Annual Conference and Exposition, Chicago,
  • "Arsenic Leaching from Spent Adsorbents Under Landfill Conditions." 2010, Presented at 2010 AWWA Inorganic Contaminants Workshop, Denver,
  • "Risk Assessment of Inorganic Contamination of Groundwater from Copper Dump-Leaching Operations." 1994, Presented at 1994 SME Annual Meeting, Albuquerque,
  • "Determination of the Effects of Different Molecular Weight Fractions of NOM on the Binding of U(VI) by Hematite." 1997, Presented at 1997 GSA Annual Meeting, Salt Lake City,
  • "Modeling the Binding of U(VI) on Hematite in the Presence of Humic and Fulvic Acids." 1997, Boulder,
  • "Modeling the Binding of U(VI) on Hematite in the Presence of Humic Acid." 1997, Bloomington,
  • "Experimental Investigation and Modeling of Citric Acid Effects on Actinide Speciation and Transport." 1999, Presented at 7th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere, Lake Tahoe,
  • "Arsenic Leaching from Spent Adsorbent Media under Landfill Conditions." 2009, Columbus,
  • "Colloids, Interfaces, and Nanoparticles: Research on Nanoscale Processes in the Environment." 2009, Columbus, US|USA
  • "Surface Complexation of O-Phthalic acid at the Hematite/Water Interface." 2005, Presented at Environmental Molecular Science Institute/North Central Region Natural Organic Matter Symposium, Columbus,
  • "An ATR-FTIR Study of Dicarboxylic Acids at the Hematite/Water Interface." 2005, Presented at 79th ACS Colloid and Surface Science Symposium, Potsdam,
  • "Characterizing the Structure of Dicarboxylic Acids at the Hematite/Water Interface." 2005, Presented at 230th ACS National Meeting, Washington,
  • "Transport of Nanoparticles in the Environment." 2005, Presented at Battelle Research Forum, Columbus,
  • "The Sorption of Naturally Occurring Organic Acids and Their Influence on Oxide Reactivity." 2006, Presented at 2006 GSA Annual Meeting, Philadelphia,
  • "Surface Complexation Modeling of the Dual-Mode Adsorption of Organic Acids." 2008, San Francisco, US|USA
  • "Evaluating the Stability of Nano-Sized Hematite in the Presence of Dicarboxylic Acids." 2010, Presented at 239th ACS National Meeting, San Francisco,
  • "The Binding of Thorium and Uranium to Hematite in the Presence of Natural Organic Matter." 1997, Presented at 1997 Conference on Interfaces Against Pollution, Wageningen, NL|NLD
  • "Binding of Thorium and Uranium to Natural Organic Matter." 1997, Presented at 214th ACS National Meeting, Las Vegas,
  • "The Effect of Citric Acid on the Sorption of Thorium and Uranium on Hematite." 1999, Presented at 217th ACS National Meeting, Anaheim,
  • "Spectroscopic Evaluation of the Binding of Malonate to Hematite and its Affect on Lead Sorption." 1999, Presented at 1999 GSA Annual Meeting, Denver,
  • "Characterization of Ternary Surface Complexes Using XAFS and FTIR Spectroscopy: Pb(II) and Malonic Acid on Hematite." 1999, New Haven,
  • "Surface Complexation Modeling of Dicarboxylic Acids at the Hematite/Water Interface." 2008, Presented at 235th ACS National Meeting, New Orleans,
  • "The Effects of NOM on the Sorption of U(VI) and Th(IV) by Hematite." 1997, Presented at 213th ACS National Meeting, San Francisco,
  • "Electrolytic Recovery of Crystalline Brucite from Membrane Residuals." 2007, Presented at 233rd ACS National Meeting, Chicago,
  • "Dissolution-Accompanied Aggregation Kinetics of Silver Nanoparticles." 2010, Presented at 240th ACS National Meeting, Boston,
  • "The Role of Organic Acids in the Transport of U(VI) Across the Sediment/Water Interface." 1997, Presented at 1997 Chemical Oceanography Gordon Conference,
  • "Coupling Release Kinetics with Solute Transport to Simulate Colloid Entrainment." 2002, Presented at 76th ACS Colloid and Surface Science Symposium, Ann Arbor,
  • "Colloid Deposition, Release and Transport in Unsaturated Porous Media." 2004, Pittsburgh,
  • "Applying Surface Complexation Modeling Concepts to Natural Systems: Accounting for NOM." 2004, Presented at 3rd Annual Environmental Molecular Science Workshop, Columbus,
  • "Probing the Structure of Organic Acids Adsorbed to Environmental Surfaces using Fourier-Transform Infrared Spectroscopy." 2006, Presented at 231st ACS National Meeting, Atlanta,
  • "Modeling Dicarboxylic Acid Adsorption at the Hematite/Water Interface." 2008, Presented at 2008 Gordon Research Conference - Environmental Sciences: Water, Holderness,
  • "Quantifying the Role of the Secondary Energy Minimum on Colloid Transport and Release in Porous Medium." 2010, Presented at 239th ACS National Meeting, San Francisco,
  • "Estimating the Changing Rate of Anaerobic Reductive Dehalogenation of Chlorinated Aliphatic Hydrocarbons in the Presence of Petroleum Hydrocarbons." 1996, Presented at Proceedings of the 1996 National Ground Water Association, Petroleum Hydrocarbons and Organic Chemicals in Ground Water Conference, Houston,
  • "Aggregation of Silver Nanoparticles in Aquatic Systems." 2009, Presented at 83rd ACS Colloid and Surface Science Symposium, New York,
  • "An ATR-FTIR Study of Carboxylic Acid Sorption on Hematite." 2004, Presented at 3rd Annual Environmental Molecular Science Workshop, Columbus,
  • "Colloid Mobilization, Transport, and Deposition in Unsaturated Porous Media." 2004, Presented at 227th ACS National Meeting, Anaheim,
  • "Recovery of Metal Cations from Lime Sludge using Donnan Dialysis." 2009, Presented at Engineering Sustainability 2009, Pittsburgh,
  • "Mobilization and Transport of Colloids in the Vadose Zone.." 2001, Presented at AGU Fall 2001 Meeting, San Francisco,
  • "Metal, Ligand and Colloid Sorption to Geologic Solids." 2001, Columbus,
  • "Probing the Surface Activity of Natural Organic Matter using Surrogate Dicarboxylic Acids." 2005, Presented at Environmental Molecular Science Institute/North Central Region Natural Organic Matter Symposium, Columbus,
  • "Treatment and Disposal of Membrane Concentrate." 2006, Presented at 2006 Ohio Section AWWA SE District Summer Meeting, Columbus,
  • "The Role of NOM in the Sorption of Uranium by Hematite." 1996, Presented at International Workshop on Interactions of Small Solutes with Materials of Environmental Relevance, Monte Verita, CH|CHE
  • "Air Bubble Enhanced Colloid Mobilization in an Unsaturated Porous Medium." 2002, Presented at International Workshop on Colloids and Colloid-Facilitated Transport of Contaminants in Soils and Sediments, Tjele, DK|DNK
  • "Colloid and Interfacial Processes in Environmental Systems." 2003, Columbus,
  • "Characterizing Natural Organic Matter Adsorption and Metal-Binding Interactions." 2003, Presented at 2nd Annual Environmental Molecular Science Workshop, Columbus,
  • "Computational Studies of Phthalic Acids Complexed to Iron in Solution and on a Mineral Surface." 2005, Presented at Environmental Molecular Science Institute/North Central Region Natural Organic Matter Symposium, Columbus,
  • "Competitive Adsorption of Low-Molecular Weight Organic Acids at Hematite/Water Interfaces." 2006, Presented at 232nd ACS National Meeting, San Francisco,
  • "Removal of Uranium from Aqueous Solution by Sorption on Animal Chitin: Design and Implementation of a Bench Scale System." 1995, Presented at 1995 DOE Environmental Restoration Conference, Denver,
  • "Metal Adsorption on Biosurfaces: Animal Chitin as a Model Organic Surface." 1995, Presented at 1995 International Chemical Congress of Pacific Basin Societies (Pacifichem), Honolulu,

Papers in Proceedings

2010

  • Mengling Yi, John J. Lenhart, K. Scheckel, H.W. Walker "Arsenic Leaching from Spent Adsorbents Under Landfill Conditions." in Proceedings of the 2010 AWWA Inorganic Contaminants Workshop. Denver, (1 2010).

2008

  • Fox, P.J., Lee, J., and Lenhart, J.J "Coupled Consolidation and Contaminant Transport in Compressible Porous Media." in Proceedings of the 2008 International Association for Computer Methods and Advances in Geomechanics (IACMAG). Goa, (1 2008).

1996

  • D.E. Moutoux, L. Alvarado-Benson, John J. Lenhart, M.A. Swanson, T.H. Wiedemeier, J.T. Wilson, J.E. Hansen "Estimating the Changing Rate of Anaerobic Reductive Dehalogenation of Chlorinated Aliphatic Hydrocarbons in the Presence of Petroleum Hydrocarbons." in Proceedings of the 1996 National Ground Water Association, Petroleum Hydrocarbons and Organic Chemicals in Ground Water Conference. Houston, (1 1996).

1994

  • Lenhart, J.J., Figueroa, L.A., and Honeyman, B.D. "The Design and Testing of CSTR and Batch Treatment Systems for U(VI) in Wastewaters Which Couple Surface Chemistry, Reaction Kinetics, and Mass Transport." in Proceedings of the 1994 ASCE National Conference on Environmental Engineering. Boulder, (1 1994).