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John Lenhart

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

About

Research Interest - Water chemistry, contaminant fate and transport, colloid and nanoparticle behavior.

Honors

  • 20090101

    Excellence in Review Award.

  • 20050101

    College of Engineering Lumley Interdisciplinary Research Award.

  • 19980101-20000101

    National Academy of Science Postdoctoral Fellowship.

Journal Articles

2015

  • Noerpel, M.R.; Lenhart, J.J., 2015, "The impact of particle size on the adsorption of citrate to hematite." JOURNAL OF COLLOID AND INTERFACE SCIENCE 460, 36-46 - 36-46.

2012

  • Li, X.; Lenhart, J.J., 2012, "Aggregation and Dissolution of Silver Nanoparticles in Natural Surface Water." ENVIRONMENTAL SCIENCE & TECHNOLOGY 46, no. 10, 5378-5386 - 5378-5386.
  • Li, X.; Lenhart, J.J.; Walker, H.W., 2012, "Aggregation Kinetics and Dissolution of Coated Silver Nanoparticles." LANGMUIR 28, no. 2, 1095-1104 - 1095-1104.

2011

  • Stuckman, M.Y.; Lenhart, J.J.; Walker, H.W., 2011, "Abiotic properties of landfill leachate controlling arsenic release from drinking water adsorbents." WATER RESEARCH 45, no. 16, 4782-4792 - 4782-4792.

2010

  • Y-S. Hwang, John J. Lenhart, 2010, "Transport of Dicarboxylic Acids through Hematite-Coated Sand." Chemosphere 78, 1049-1055 - 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 - 469-475.

2009

  • 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,
  • 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 - 200-207.
  • Lenhart, J.J.; Lee, J.; Hwang, Y.S.; Fox, P.J., 2009, "Polychlorinated biphenyl transport from consolidation of contaminated sediments during in situ capping." Journal of ASTM International 6, no. 8,

2008

  • 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 - 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 - 124-134.

2006

  • Chen, D.; Weavers, L.K.; Walker, H.W.; Lenhart, J.J., 2006, "Ultrasonic control of ceramic membrane fouling caused by natural organic matter and silica particles." Journal of Membrane Science 276, no. 1-2, 135-144 - 135-144.
  • 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 - 135-144.

2005

  • Saiers, J.E.; Lenhart, J.J., 2005, "Erratum: Ionic-strength effects on colloid transport and interfacial reactions in partially saturated porous media (Water Resources Research (2003) 39:9 (1256) DOI: 10.1029/2002WR001887)." Water Resources Research 41, no. 3, 1-2 - 1-2.

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 - 47-62.

Presentations

  • "Risk Assessment of Inorganic Contamination of Groundwater from Copper Dump-Leaching Operations." 1994, Presented at 1994 SME Annual Meeting,
  • "The Binding of Thorium and Uranium to Hematite in the Presence of Natural Organic Matter." 1997, Presented at 1997 Conference on Interfaces Against Pollution,
  • "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,
  • "Modeling the Binding of U(VI) on Hematite in the Presence of Humic and Fulvic Acids." 1997,
  • "Modeling the Binding of U(VI) on Hematite in the Presence of Humic Acid." 1997,
  • "Mobilization and Transport of Colloids in the Vadose Zone.." 2001, Presented at AGU Fall 2001 Meeting,
  • "Coupling Release Kinetics with Solute Transport to Simulate Colloid Entrainment." 2002, Presented at 76th ACS Colloid and Surface Science Symposium,
  • "Transport of Nanoparticles in the Environment." 2005, Presented at Battelle Research Forum,
  • "Arsenic Leaching from Spent Adsorbent Media under Landfill Conditions." 2009,
  • "Colloids, Interfaces, and Nanoparticles: Research on Nanoscale Processes in the Environment." 2009,
  • "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,
  • "Metal Adsorption on Biosurfaces: Animal Chitin as a Model Organic Surface." 1995, Presented at 1995 International Chemical Congress of Pacific Basin Societies (Pacifichem),
  • "The Role of Organic Acids in the Transport of U(VI) Across the Sediment/Water Interface." 1997, Presented at 1997 Chemical Oceanography Gordon Conference,
  • "Metal, Ligand and Colloid Sorption to Geologic Solids." 2001,
  • "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,
  • "Colloid and Interfacial Processes in Environmental Systems." 2003,
  • "Characterizing Natural Organic Matter Adsorption and Metal-Binding Interactions." 2003, Presented at 2nd Annual Environmental Molecular Science Workshop,
  • "Colloid Deposition, Release and Transport in Unsaturated Porous Media." 2004,
  • "Applying Surface Complexation Modeling Concepts to Natural Systems: Accounting for NOM." 2004, Presented at 3rd Annual Environmental Molecular Science Workshop,
  • "An ATR-FTIR Study of Dicarboxylic Acids at the Hematite/Water Interface." 2005, Presented at 79th ACS Colloid and Surface Science Symposium,
  • "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,
  • "Competitive Adsorption of Low-Molecular Weight Organic Acids at Hematite/Water Interfaces." 2006, Presented at 232nd ACS National Meeting,
  • "Treatment and Disposal of Membrane Concentrate." 2006, Presented at 2006 Ohio Section AWWA SE District Summer Meeting,
  • "Surface Complexation Modeling of the Dual-Mode Adsorption of Organic Acids." 2008,
  • "Aggregation of Silver Nanoparticles in Aquatic Systems." 2009, Presented at 83rd ACS Colloid and Surface Science Symposium,
  • "Arsenic Leaching from Spent Adsorbents Under Landfill Conditions." 2010, Presented at 2010 AWWA Inorganic Contaminants Workshop,
  • "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,
  • "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,
  • "An ATR-FTIR Study of Carboxylic Acid Sorption on Hematite." 2004, Presented at 3rd Annual Environmental Molecular Science Workshop,
  • "Surface Complexation Modeling of Dicarboxylic Acids at the Hematite/Water Interface." 2008, Presented at 235th ACS National Meeting,
  • "Modeling Dicarboxylic Acid Adsorption at the Hematite/Water Interface." 2008, Presented at 2008 Gordon Research Conference - Environmental Sciences: Water,
  • "Evaluating the Stability of Nano-Sized Hematite in the Presence of Dicarboxylic Acids." 2010, Presented at 239th ACS National Meeting,
  • "Spectroscopic Evaluation of the Binding of Malonate to Hematite and its Affect on Lead Sorption." 1999, Presented at 1999 GSA Annual Meeting,
  • "Characterization of Ternary Surface Complexes Using XAFS and FTIR Spectroscopy: Pb(II) and Malonic Acid on Hematite." 1999,
  • "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,
  • "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,
  • "The Sorption of Naturally Occurring Organic Acids and Their Influence on Oxide Reactivity." 2006, Presented at 2006 GSA Annual Meeting,
  • "Quantifying the Role of the Secondary Energy Minimum on Colloid Transport and Release in Porous Medium." 2010, Presented at 239th ACS National Meeting,
  • "Surface complexes of phthalic acid at the hematite/water interface."
  • "Dissolution-Accompanied Aggregation Kinetics of Silver Nanoparticles."

Papers in Proceedings

2010

  • Yi, M.; Lenhart, J.J.; Scheckel, K.; Walker, H.W. "Evaluating the release of arsenic from spent adsorbent media under landfill conditions." (12 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. (1 2010).

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. (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. (1 1994).