Faculty Directory
Jean-François Gaillard

Professor of Civil and Environmental Engineering and (by courtesy) Earth and Planetary Sciences


2145 Sheridan Road
Tech A324
Evanston, IL 60208-3109

847-467-1376Email Jean-François Gaillard


Gaillard Research


Civil and Environmental Engineering

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D.Sc. Docteur Ès Sciences Physiques - Géochimie, University Denis Diderot (Paris 7) and Paris Institute of Earth Physics (I.P.G.P.), Paris, France

Dr. Docteur de 3ème cycle en Sciences de l'Eau, University Pierre et Marie Curie, Paris, France

M.S. Diplôme d'Etudes Approfondies en Sciences de l'Eau, University Pierre et Marie Curie, Paris, France

B.S. Maîtrise de Sciences et Techniques Air et Eau, University of Savoie, Chambéry, France

Research Interests

The primary focus of the research performed in my group is to understand the biogeochemical processes that affect the fate of metals in aquatic systems. A special emphasis is to elucidate how the chemical speciation of metals controls their biouptake/bioavailability focusing on microbial species, since microorganisms constitute the foundation of any ecological system. We are conducting field studies, laboratory experiments, and using modeling approaches based on advanced analytical, microscopic, and spectroscopic methods. Our most recent activities have been centered on the chemical fate of As, Ni, and Hg in aquatic environments as well as on the environmental impacts of nano-structured materials commonly used.

Keywords: Environmental Chemistry, Metal Speciation, Biogeochemical Cycling of Metals and Metalloids, x-ray absoprtion spectroscopy

Selected Publications

    1.  Xie M., Alsina M.A., Yuen J., Packman A.I., Gaillard J.-F. (2019) Eects of resuspension on the mobility and chemical speciation of zinc in contaminated sediments. Journal of Hazardous Materials, 364: 300-308

    2. Thomas S.A., Rodby K. E., Roth E.W., Wu J., Gaillard J.-F. (2018) Spectroscopic and Microscopic Evidence of Biomediated HgS Species Formation from Hg(II)-Cysteine Complexes: Implications for Hg(II) Bioavailability. Environmental Science & Technology, 52: 10030-10039.

    3. Alsina M. A., Gaillard J.-F. (2018) Structural characterization of metal complexes in aqueous solutions: A XAS study of stannous uoride. Physical Chemistry Chemical Physics, 20,12727-12735.

    4. Wilke C.M., Wunderlich B., Gaillard J.-F., Gray K.A. (2018) Synergistic Bacterial Stress Results from Exposure to Nano-Ag and Nano-TiO2  Mixtures under Light in Environmental Media. Environmental Science & Technology, 52(5), 3185-3194.

    5. Wilke C.M., Gaillard J.-F., Gray K.A. (2018) The critical role of light in moderating microbial stress due to mixtures of engineered nanomaterials. Environmental Science: Nano, 5, 96-102.

    6. Xie M., Wang N., Gaillard J.-F., Packman A.I. (2018) Interplay between Flow and Bioturbation Enhances Metal Eux from Low-Permeability Sediments. Journal of Hazardous Materials, 341, 304-312.

    7. Thomas, S.A., Gaillard J.-F. (2017) Cysteine Addition Promotes Sulfide Production and 4-Fold Hg(II)-S Coordination in Actively Metabolizing Escherichia coli. Environmental Science & Technology, 51, 4642-4651.

    8. Alsina, M. A., Gaillard J.-F., Keten S. (2016) Conformational changes during the permeation of Na+ through a modified cyclic peptide nanotube promote energy landscape roughness. Physical Chemistry Chemical Physics, 18, 31698-31710.

    9. Wilke C.M., Tong T., Gaillard J.-F., Gray K.A. (2016) Attenuation of Microbial Stress due to n-Ag and n-TiO2 Interactions under Dark Conditions. Environmental Science & Technology, 50, 11302-11310.

    10. Wang N., Tong T., Xie M., Gaillard J.-F. (2016) Lifetime and Dissolution Kinetics of Zinc Oxide Nanoparticles in Aqueous Media. Nanotechnology, (invited contribution), 32, 324001.

    11. Thomas S.A., Ma Q., Gaillard J.-F. (2016) Probing changes in Hg(II) coordination during its bacterial uptake. Journal of Physics: Conference Series, 712(1), 012078.

    12. Xie M., Wang N., Gaillard J.-F., Packman A.I. (2016) Hydrodynamic Forcing Mobilizes Cu in Low-Permeability Estuarine Sediments. Environmental Science & Technology, 50 (9), 4615-4623.

    13. Binh C.T.T., Adams E., Vigen E., Tong T., Alsina, M.A., Gaillard J.-F., Gray K.A., Peterson C.G., Kelly J.J. (2016) Chronic addition of a common engineered nanomaterial alters biomass, activity and composition of stream biofilm communities. Environmental Science: Nano, 3(3), 619-630.

    14. Ozaki, A., Adams E., Binh C.T.T., Tong T., Gaillard J.-F., Gray K.A., Kelly J.J. (2016) One-time addition of nano-TiO2 triggers short-term responses in benthic bacterial communities in artificial streams. Microbial Ecology, 71(2), 266-275.

    15. Tong T., Wilke C.M., Wu J., Binh C.T.T., Kelly J.J., Gaillard J.-F., Gray K.A. (2015) Combined Toxicity of nano-ZnO and nano-TiO2: From Single to Multinanomaterial Systems. Environmental Science & Technology, 49 (13), 8113-8123.

    16. Webb, S.M., and Gaillard J.-F. (2015) Zinc speciation in contaminated sediments: Quantitative determination of zinc coordination by x-ray absorption spectroscopy. Aquatic Geochemistry, (2-4) , 295-312.

    17. Xie M., Jarrett B.A., Da Silva-Cadoux C., Fetters K.J., Burton G.A., Gaillard J.-F., Packman A.I. (2015) Coupled Effects of Hydrodynamics and Biogeochemistry on Zn Mobility and Speciation in Highly Contaminated Sediments. Environmental Science & Technology, 49 (9), 5346?5353.

    18. Binh C.T.T., Petersen C.G., Tong T., Gaillard J.-F., Gray K.A., and Kelly J.J. (2015) Comparing acute effects of a nano-TiO2 pigment on cosmopolitan freshwater phototrophic microbes using high-throughput screening. PLoS One, 10(4), e0125613. 

    19. Thomas S.A., Gaillard J.-F. (2015) The Molecular Structure of Aqueous Hg(II)-EDTA As Determined by X-ray Absorption Spectroscopy. Journal of Physical Chemistry A, 119 (12), 2878-2884

    20. Tong T., Hill, A.N., Alsina M.A., Wu J., Shang K.Y. , Kelly J.J., Gray K.A., Gaillard J.- F. (2015) Spectroscopic characterization of TiO2 polymorphs in wastewater treatment and sediment samples. Environmental Science & Technology Letters, 2(1), 12-18.

    21. Thomas S.A., Tong T., and Gaillard J.-F. (2014) Hg(II) bacterial biouptake: The role of anthropogenic and biogenic ligands present in solution and spectroscopic evidence of ligand exchange reactions at the cell surface. Metallomics , 6, 2213-222.

    22. Alsina M.A., L. Zanella L., C.A. Hoel, G.E. Pizzaro, J.-F. Gaillard, and P.A. Pasten (2014) Arsenic Speciation in Sinter Mineralization from a Hydrothermal Channel of El Tatio Geothermal Field, Chile. Journal of Hydrology, 518, 434-446

    23. Binh C.T.T., Tong T., Gaillard J.-F., Gray K.A., and Kelly J.J. (2014) Acute Effects of TiO2 Nanomaterials on the Viability and Taxonomic Composition of Aquatic Bacterial Communities Assessed via High-Throughput Screening and Next Generation Sequencing. PLOS One , 9(8) , e106280.Tong, T., Fang, K.Q., Thomas, S.A ., Kelly, J.J., Gray, K.A., and Gaillard, J.-F. (2014) Chemical Interactions between Nano-ZnO and Nano-TiO2  in a Natural Aqueous Medium. Environmental Science & Technology, 48(14), 7924-7932.

    24. Binh C.T, Tong T., Gaillard J.-F., Gray K.A., and Kelly J.J. (2013) Common freshwater bacteria vary in their responses to short-term exposure to nano-TiO2 in natural surface waters. Environmental Toxicology and Chemistry, 33(2), 317-327.

    25. Tong T., Shereef A., Wu J., Binh C.T., Kelly J.J., Gaillard J.-F., and K.A. Gray (2013) Effects of Material Morphology on the Phototoxicity of Nano-TiO2 to Bacteria. Environmental Science & Technology, 47(21), 12486-12495.

    26. Tong T., C.T.T. Binh, J.J. Kelly , J.-F. Gaillard, and K.A. Gray (2013) Cytotoxicity of commercial nano-TiO2 to Escherichia coli assessed by high-throughput screening: Effects of environmental factors. Water Research, 47, 2352-2362.

    27. Silva-Cadoux C., L. Zanella, and J.-F. Gaillard (2012) Selecting reference compounds for determining chemical speciation by X-ray absorption spectroscopy. Journal of Analytical Atomic Spectrometry, 27, 957-965.

    28. Dahl A.L., J. Sanseverino, and J.-F. Gaillard (2011) Bacterial Bioreporter Detects Mercury in the Presence of Excess EDTA. Environmental Chemistry, 58, 552-560.

    29. Hoel C.A., T.O. Mason, J.-F. Gaillard, and Poeppelmeier K.R. (2010) Transparent Conducting Oxides in the ZnO-In2O3-SnO2 System. Chemistry of Materials, 22, 3569-3579.

    30. V. Petkov, Y. Ren, I. Saratovsky, P. Pasten, S. Gurr, M. Hayward, K. Poeppelmeir and J-F. Gaillard (2009), Atomic-scale structure of biogenic materials by total XRD: a study of bacterial and fungal MnOx. ACS-Nano, 3(2), 441-445.

    31. Gaillard, J.-F., Chen, C., Stonedahl, S., Lau, B., Keane, D.T., and Packman, A.I. (2007), Imaging of colloidal deposits in granular porous media by x-ray difference micro-tomography. Geophysical Research Letters, 34, L18404.

    32. Gaillard J.-F. (2007) Probing Environmental Particles and Colloids with X-Rays. In Environmental Particles and Colloids: Behaviour, Structure, and Characterisation, Eds. K.J. Wilkinson and J.R. Lead. IUPAC Series on Analytical and Physical Chemistry of Environmental Systems. Wiley, Chichester, 613-666.

    33. Saratovksy, I., Wightman P.G., Pasten P.A., Gaillard J.-F., Poeppelmeier K.R. (2006) Manganese Oxides: Parallels between Abiotic and Biotic Structures. Journal of the American Chemical Society, 128, 11188-11198.

    34. Peltier, E.F., Dahl. A.L., Gaillard, J-F. (2005) Metal Speciation in Anoxic Sediments: When Sulfides can be Construed as Oxides. Environmental Science & Technology, 39, 311-316.

    35. Webb, S. M., Gaillard, J.-F., Ma L.Q., Tu, C. (2003) XAS Speciation of Arsenic in an Hyperaccumulating Fern. Environmental Science & Technology, 37, 754-760.

    36. Taillefert M., C.-P. Lienemann, J.-F. Gaillard, and D. Perret (2000) Speciation, Reactivity, and Cycling of Fe and Pb in a Meromictic Lake. Geochimica et Cosmochimica Acta, 64, 169-183.

    37. Webb S.M., Leppard G.G., Gaillard J.-F. (2000) Zinc Speciation in a Contaminated Aquatic Environment: Characterization of Environmental Particles by Analytical Electron Microscopy. Environmental Science & Technology, 34, 1926-1933.