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Kimberly A. Gray
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Our work on environmental process deals with the general study of contaminant fate in aquatic systems. Specifically, we use the analytical technique of pyrolysis/GC/MS to trace the removal or transformation of organic compounds in systems such as drinking water treatment, surface waters, or wetlands. We are particularly interested in understanding the coupled effects of organic and metal contaminants in treatment or natural processes. In the area of radiation-induced catalysis, our work is focused on understanding how radiant energy is converted to chemical energy to drive the degradation of pollutants in complicated mixtures. We study photocatalytic reactions on titanium dioxide by using novel analytical techniques to improve our mechanistic understanding of the process. We also study the radiolytic destruction of contaminants in soils and on oxide surfaces. Our ecotoxicological research involves the study of PCB dynamics in stream sediments. We are investigating the effects associated with PCBs strong partitioning in biological organisms on ecological structure. In the area of environmental remediation, we are working on the remediation of a number of highly contaminated brownfield sites on the Southeast side of Chicago. Recent PublicationsS Arnon, A.I. Packman, C.G. Peterson, K.A. Gray (2006) “The effects of overlying velocity on periphyton structure and denitrification,” Journal of Geophysical Research, accepted. L. Chen, M.E. Graham, G. Li, K.A. Gray (2006) “Fabricating Highly Active Mixed Phase TiO2 Photocatalysts by Reactive DC Magnetron Sputter Deposition,” Thin Solid Films, in press. S Arnon, K.A. Gray, A.I. Packman, (2006) “Biophysicochemical process coupling controls nitrogen utilization by benthic biofilms,” Limnology and Oceanography, accepted. C.K. Ishida, J.J. Kelly, K.A. Gray, (2006) “Effects of variable hydroperiods and water level fluctuations on the denitrification capacity, nitrate removal, and benthic microbial community structure in constructed wetlands,” Ecological Engineering, in press. T. Sirivedhin, K.A. Gray, (2006) “Factors Affecting Denitrification Rates in Experimental Wetlands: Field and Laboratory Studies,” Ecological Engineering, 26:167-181. D.C. Hurum, A. G. Agrios, S.E. Crist, K.A. Gray, T. Rajh, M.C. Thurnauer, (2006) “Probing reaction mechanisms in mixed phase TiO2 by EPR,” Journal of Electron Spectroscopy, 150:2-3:155-163. T. Sirivedhin, K.A. Gray, (2005) “Identifying Anthropogenic Markers in Surface Waters Influenced by Treated Effluents: A Tool in Potable Water Reuse,” Water Research, 39:1154-1164. T. Sirivedhin, K.A. Gray, (2005) “Comparison of the Disinfection Byproduct Formation Potentials between a Wastewater Effluent and Surface Waters,” Water Research, 39:1025-1036. D. Hurum, K. Gray, T. Rajh, M. Thurnauer, (2005) “Recombination Pathways in the Degussa P25 Formulation of TiO2: Surface versus Lattice Mechanisms,” J.Phys.Chem B, 109:977-980. A. Agrios, K. Gray, E. Weitz, (2004) “Narrow Band Irradiation of Homologous Series of Chlorophenols on TiO2: Charge Transfer Complex Formation and Reactivity.” Langmuir, 20, 5911-5917 Awards and Honors
Prof. Kimberly A. Gray
tel: 847/467-4252
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Administrative & Emeritus Faculty Master of Biotechnology Program Faculty and Staff
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