Lizette R. Chevalier

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This study examined the hypothesis that different inorganic carbon (IC) conditions enrich different ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) populations by operating two laboratory-scale continuous-flow bioreactors fed with 15 and 100 mg IC/L, respectively. During this study, both bioreactors maintained satisfactory(More)
Improper disposal, accidental spills and leaks of non-aqueous phase liquids (NAPL) such as gasoline, fuel oil and creosote result in long-term persistent sources of groundwater pollution. Column and 2-D tanks experiments were conducted to evaluate the use of surfactant-enhanced recovery of light non-aqueous phase liquids (LNAPL) in groundwater aquifers.(More)
A CD-ROM–based laboratory manual for the torsion experiment in the Strength of Materials Laboratory was developed through collaboration between Civil Engineering and the Interactive Multimedia Department. The labware is intended to enhance student learning through the development of and exposure to richer learning tools, resources, and advanced(More)
Researchers in both environmental and petroleum engineering have conducted studies in one-dimensional columns to quantify the amount of residual nonaqueous phase liquids (NAPL) trapped in the porous media as a function of capillary, viscous and buoyancy forces. From these previous studies, it is proven that significant amounts of the original NAPL spill(More)
Green infrastructure (GI) revitalizes vegetation and soil, restores hydro-ecological processes destroyed by traditional urbanization, and naturally manages stormwater on-site, offering numerous sustainability benefits. However, despite being sustainable and despite being the object of unrelenting expert advocacy for more than two decades, GI implementation(More)
This research investigates the use of a proprietary formulation of powdered calcium peroxide (PermeOx Plus®) as an oxygen releasing compound in a treatment wall. Laboratory scale column studies evaluated the release of oxygen and the permeability effects resulting from a treatment wall mixture of the calcium peroxide and a representative aquifer sand(More)
1 Lizette R. Chevalier, Chair, Dept. of Civil and Environmental Engineering, cheval@engr.siu.edu 2 Shashi Marikunte, Asst. Professor, Dept. of Civil and Environmental Engineering, marikunt@engr.siu.edu 3 Jemil Yesuf, Graduate Student, Dept. of Civil and Environmental Engineering, jemiln74@yahoo.com Abstract The use of empirical models is an integral part of(More)
Traditional urban stormwater management involves rapid removal of stormwater through centralized conveyance systems of curb-gutter-pipe networks. This results in many adverse impacts on the environment including hydrological disruption, groundwater depletion, downstream flooding, receiving water quality degradation, channel erosion, and stream ecosystem(More)
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