Reston Biogeochemical Processes in Groundwater Laboratory

Publications

Filter Total Items: 97
Publication Thumbnail
Year Published: 2010

In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater

Benzene and alkylbenzene biodegradation rates and patterns were measured using an in situ microcosm in a crude-oil contaminated aquifer near Bemidji, Minnesota. Benzene-D6, toluene, ethylbenzene, o-, m- and p-xylenes and four pairs of C3- and C4-benzenes were added to an in situ microcosm and studied over a 3-year period. The microcosm allowed for...

Cozzarelli, I.M.; Bekins, B.A.; Eganhouse, R.P.; Warren, E.; Essaid, H.I.
In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater; 2010; Article; Journal; Journal of Contaminant Hydrology; Cozzarelli, I. M.; Bekins, B. A.; Eganhouse, R. P.; Warren, E.; Essaid, H. I.

Publication Thumbnail
Year Published: 2009

Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume

The biogeochemistry at the interface between sediments in a seasonally ponded wetland (slough) and an alluvial aquifer contaminated with landfill leachate was investigated to evaluate factors that can effect natural attenuation of landfill leachate contaminants in areas of groundwater/surface-water interaction. The biogeochemistry at the wetland-...

Lorah, M.M.; Cozzarelli, I.M.; Böhlke, J.K.
Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume; 2009; Article; Journal; Journal of Contaminant Hydrology; Lorah, M. M.; Cozzarelli, I. M.; Bohlke, J. K.

Publication Thumbnail
Year Published: 2009

Pore-water chemistry from the ICDP-USGS core hole in the Chesapeake Bay impact structure-Implications for paleohydrology, microbial habitat, and water resources

We investigated the groundwater system of the Chesapeake Bay impact structure by analyzing the pore-water chemistry in cores taken from a 1766-m-deep drill hole 10 km north of Cape Charles, Virginia. Pore water was extracted using high-speed centrifuges from over 100 cores sampled from a 1300 m section of the drill hole. The pore-water samples...

Sanford, W.E.; Voytek, M.A.; Powars, D.S.; Jones, B.F.; Cozzarelli, I.M.; Cockell, C.S.; Eganhouse, R.P.
Pore-water chemistry from the ICDP-USGS core hole in the Chesapeake Bay impact structure-Implications for paleohydrology, microbial habitat, and water resources; 2009; Article; Journal; Special Paper of the Geological Society of America; Sanford, W. E.; Voytek, M. A.; Powars, D. S.; Jones, B. F.; Cozzarelli, I. M.; Cockell, C. S.; Eganhouse, R. P.

Publication Thumbnail
Year Published: 2009

Processes affecting δ34S and δ18O values of dissolved sulfate in alluvium along the Canadian River, central Oklahoma, USA

The δ34S and δ18O values for dissolved sulfate in groundwater are commonly used in aquifer studies to identify sulfate reservoirs and describe biogeochemical processes. The utility of these data, however, often is compromised by mixing of sulfate sources within reservoirs and isotope fractionation during sulfur redox cycling. Our study...

Tuttle, Michele L.; Breit, George N.; Cozzarelli, Isabelle M.
Processes affecting δ34S and δ18O values of dissolved sulfate in alluvium along the Canadian River, central Oklahoma, USA; 2009; Article; Journal; Chemical Geology; Tuttle, M. L. W.; Breit, G. N.; Cozzarelli, I. M.

Publication Thumbnail
Year Published: 2009

William "Bill" Back: an incisive geochemist and a great mentor.

[No abstract available]

Baedecker, M.J.; Wood, W.W.
William "Bill" Back: an incisive geochemist and a great mentor.; 2009; Article; Journal; Ground water; Baedecker, M. J.; Wood, W. W.

Publication Thumbnail
Year Published: 2008

Results of the chemical and isotopic analyses of sediment and ground water from alluvium of the Canadian River near a closed municipal landfill, Norman, Oklahoma, Part 2

Analytical results on sediment and associated ground water from the Canadian River alluvium collected subsequent to those described in Breit and others (2005) are presented in this report. The data presented herein were collected primarily to evaluate the iron and sulfur species within the sediment at well sites IC 36, IC 54, and IC South located...

Breit, George N.; Tuttle, Michele L.W.; Cozzarelli, Isabelle M.; Berry, Cyrus J.; Christenson, Scott C.; Jaeschke, Jeanne B.
Results of the Chemical and Isotopic Analyses of Sediment and Ground Water from Alluvium of the Canadian River Near a Closed Municipal Landfill, Norman, Oklahoma, Part 2; 2008; OFR; 2008-1134; Breit, George N.; Tuttle, Michele L.W.; Cozzarelli, Isabelle M.; Berry, Cyrus J.; Christenson, Scott C.; Jaeschke, Jeanne B.

Publication Thumbnail
Year Published: 2008

Determination of dominant biogeochemical processes in a contaminated aquifer-wetland system using multivariate statistical analysis

Determining the processes governing aqueous biogeochemistry in a wetland hydrologically linked to an underlying contaminated aquifer is challenging due to the complex exchange between the systems and their distinct responses to changes in precipitation, recharge, and biological activities. To evaluate temporal and spatial processes in the wetland-...

Baez-Cazull, S. E.; McGuire, J.T.; Cozzarelli, I.M.; Voytek, M.A.
Determination of dominant biogeochemical processes in a contaminated aquifer-wetland system using multivariate statistical analysis; 2008; Article; Journal; Journal of Environmental Quality; Baez-Cazull, S. E.; McGuire, J. T.; Cozzarelli, I. M.; Voytek, M. A.

Publication Thumbnail
Year Published: 2007

Biogeochemistry of aquifer systems

Many studies have examined the differences in bacterial numbers, composition, and activity between groundwater and sediment samples. The majority of the literature has suggested higher percentages of attached bacteria than of unattached bacteria in aquifer systems, including in pristine aquifers and in aquifers contaminated with petroleum,...

Hurst, C.J.; Crawford, R.; Garland, J.; Mills, A.L.; Lipson, D.A.; Stetzenbach, L.D.; Cozzarelli, Isabelle M.; Weiss, J.V.
Cozzarelli I, Weiss J. 2007. Biogeochemistry of Aquifer Systems, p 843-859. In Hurst C, Crawford R, Garland J, Lipson D, Mills A, Stetzenbach L (ed), Manual of Environmental Microbiology, Third Edition. ASM Press, Washington, DC. doi: 10.1128/9781555815882.ch68

Publication Thumbnail
Year Published: 2007

Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis

Steep biogeochemical gradients were measured at mixing interfaces in a wetland-aquifer system impacted by landfill leachate in Norman, Oklahoma. The system lies within a reworked alluvial plain and is characterized by layered low hydraulic conductivity wetland sediments interbedded with sandy aquifer material. Using cm-scale passive diffusion...

Baez-Cazull, S.; McGuire, J.T.; Cozzarelli, Isabelle M.; Raymond, A.; Welsh, L.
Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis; 2007; Article; Journal; Applied Geochemistry; Baez-Cazull, S.; McGuire, J. T.; Cozzarelli, I. M.; Raymond, A.; Welsh, L.

Publication Thumbnail
Year Published: 2007

Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system

This paper presents small-scale push–pull tests designed to evaluate the kinetic controls on SO42-">SO42- reduction in situ at mixing interfaces between a wetland and aquifer impacted by landfill leachate at the Norman Landfill research site, Norman, OK. Quantifying the rates of redox reactions initiated at interfaces is of...

Kneeshaw, T.A.; McGuire, Jennifer T.; Smith, Erik W.; Cozzarelli, Isabelle M.
Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system; 2007; Article; Journal; Applied Geochemistry; Kneeshaw, T. A.; McGuire, J. T.; Smith, E. W.; Cozzarelli, I. M.

Publication Thumbnail
Year Published: 2006

Recharge processes drive sulfate reduction in an alluvial aquifer contaminated with landfill leachate

Natural attenuation of contaminants in groundwater depends on an adequate supply of electron acceptors to stimulate biodegradation. In an alluvial aquifer contaminated with leachate from an unlined municipal landfill, the mechanism of recharge infiltration was investigated as a source of electron acceptors. Water...

Scholl, M.A.; Cozzarelli, I.M.; Christenson, S.C.
Recharge processes drive sulfate reduction in an alluvial aquifer contaminated with landfill leachate; 2006; Article; Journal; Journal of Contaminant Hydrology; Scholl, M. A.; Cozzarelli, I. M.; Christenson, S. C.

Publication Thumbnail
Year Published: 2005

Temporal changes in indicators of natural attenuation and physical controlling factors for a freshwater tidal wetland contaminated With chlorinated volatile organic compounds, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1995-2001

Lorah, Michelle M.; Spencer, Tracey A.; McGinty, Angela L.
Temporal changes in indicators of natural attenuation and physical controlling factors for a freshwater tidal wetland contaminated With chlorinated volatile organic compounds, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1995-2001; 2005; SIR; 2005-5057; Lorah, Michelle M.; Spencer, Tracey A.; McGinty, Angela L.