• Publications
  • Influence
Bioreactive Barriers: A Comparison of Bioaugmentation and Biostimulation for Chlorinated Solvent Remediation
A side-by-side comparison of bioaugmentation, biostimulation, and a recirculation-only control was implemented in a chloroethene-contaminated aquifer. The objective was to develop a contaminant massExpand
Green roof valuation: a probabilistic economic analysis of environmental benefits.
Green (vegetated) roofs have gained global acceptance as a technologythat has the potential to help mitigate the multifaceted, complex environmental problems of urban centers. While policies thatExpand
Carbon tetrachloride transformation in a model iron-reducing culture: relative kinetics of biotic and abiotic reactions.
It is concluded that G. metallireducens induces CT transformation in this system primarily through the formation of reactive mineral surfaces rather than via co-metabolic mechanisms, indicating that reactive biogenic minerals could play a significant role in the natural attenuation of chlorinated solvents in iron-reducing environments. Expand
Comparison of Eh and H2 Measurements for Delineating Redox Processes in a Contaminated Aquifer
Measurements of oxidation−reduction potential (Eh) and concentrations of dissolved hydrogen (H2) were made in a shallow groundwater system contaminated with solvents and jet fuel to delineate theExpand
Estimating Population Distributions When Some Data Are Below a Limit of Detection by Using a Reverse Kaplan-Meier Estimator
The reverse KM estimator is recommended for estimation of the distribution function and population percentiles in preference to commonly used methods such as substituting LOD/2 or Lod/√2 for values below the LOD, assuming a known parametric distribution, or using imputation to replace the left-censored values. Expand
Carbon tetrachloride transformation on the surface of nanoscale biogenic magnetite particles.
The large fraction of relatively benign products formed by the carbene-mediated pathways suggests that magnetite/maghemite particles may have a beneficial application in the remediation of CT contaminated environments. Expand
Impact of WHO 2005 revised toxic equivalency factors for dioxins on the TEQs in serum, household dust and soil.
Comparisons between studies based on the TEQ-WHO(98) and TEQ(05) may need to consider an appropriate conversion factor to assure comparability, as changes in TEFs may have impact in locations where regulations of soil contamination are triggered by specific TEQ levels. Expand
Microbial dechlorination of historically present and freshly spiked chlorinated dioxins and diversity of dioxin-dechlorinating populations
Results demonstrate that both freshly spiked and aged PCDDs are available to microbial reductive dechlorination, the peri and triCDD dechlorinations are attributed to activities of nonmethanogenic, non-spore-forming microbial subpopulations, and the 2,3,7,8-residue patterns in historically contaminated sediments are likely affected by microbial activity. Expand
Bacterial dehalogenation of chlorobenzoates and coculture biodegradation of 4,4'-dichlorobiphenyl
Acinetobacter sp. strain 4CB1 was isolated from a polychlorobiphenyl-contaminated soil sample by using 4-chlorobenzoate as a sole source of carbon and energy. Resting cells of Acinetobacter sp.Expand