Search Results - "Johnson, Gwynn R"

PFAS in soil and groundwater following historical land application of biosolids by Johnson, Gwynn R.

“…•The distribution of PFAS through surface soil, the vadose zone and to groundwater is characterized.•Measured PFAS soil levels are 1 to 2 orders of magnitude…”
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In-situ activation of persulfate by iron filings and degradation of 1,4-dioxane by Zhong, Hua, Brusseau, Mark L., Wang, Yake, Yan, Ni, Quig, Lauren, Johnson, Gwynn R.

“…Activation of persulfate by iron filings and subsequent degradation of 1,4-dioxane (dioxane) was studied in both batch-reactor and column systems to evaluate…”
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Global distributions, source-type dependencies, and concentration ranges of per- and polyfluoroalkyl substances in groundwater by Johnson, Gwynn R., Brusseau, Mark L., Carroll, Kenneth C., Tick, Geoffrey R., Duncan, Candice M.

“…A meta-analysis was conducted of published literature reporting concentrations of per- and polyfluoroalkyl substances (PFAS) in groundwater for sites…”
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Amending greenroof soil with biochar to affect runoff water quantity and quality by Beck, Deborah A., Johnson, Gwynn R., Spolek, Graig A.

“…Numbers of greenroofs in urban areas continue to grow internationally; so designing greenroof soil to reduce the amount of nutrients in the stormwater runoff…”
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Spatial-Temporal Patterns of Shallow Groundwater Levels in the Yellow River Delta, China by Fan, Xiaomei, Johnson, Gwynn R., Xu, Jun, Liu, Gaohuan

“…AbstractAnalysis of the various hydrologic features responsible for the spatial and temporal variability in large scale subsurface systems is a critical…”
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Non-ideal Behavior During Complete Dissolution of Organic Immiscible Liquid: 2. Ideal Porous Media by Mahal, M. K, Murao, Asami, Johnson, Gwynn R, Russo, Ann E, Brusseau, Mark L

“…Column experiments were conducted using ideal natural sands and stainless-steel beads to examine the complete dissolution behavior of an organic immiscible…”
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Evaporative mass transfer behavior of a complex immiscible liquid by MCCOLL, Colleen M, JOHNSON, Gwynn R, BRUSSEAU, Mark L

“…A series of laboratory experiments was conducted with a multiple-component immiscible liquid, collected from the Picillo Farm Superfund Site in Rhode Island,…”
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Influence of Heterogeneity and Sampling Method on Aqueous Concentrations Associated with NAPL Dissolution by Brusseau, Mark L, Nelson, Nicole T, Oostrom, Mart, Zhang, Zhihui, Johnson, Gwynn R, Wietsma, Tom W

“…The purpose of this work is to examine the effects of nonuniform distributions of nonaqueous-phase liquid (NAPL) saturation, porous-media heterogeneity, and…”
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Partitioning Tracer Tests for Evaluating Remediation Performance by Cain, R. Brent, Johnson, Gwynn R., McCray, John E., Blanford, William J., Brusseau, Mark L.

“…Partitioning tracer tests (PTTs) are being used in environmental systems for the detection and estimation of nonaqueous phase liquid (NAPL) saturations in…”
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Global distributions of per- and polyfluoroalkyl substances in the environment by Johnson, Gwynn R, Brusseau, Mark L, Carroll, Kenneth C, Tick, Geoffrey R

“…A meta-analysis was conducted of published literature reporting concentrations of per- and polyfluoroalkyl substances (PFAS) in groundwater for sites…”
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A Laboratory Comparison of Green-Roof Runoff Water Quality by Johnson, Gwynn R, Buccola, Norman, Spolek, Graig

“…Increasingly, building owners and city planners are turning to vegetated roofing systems, commonly known as green-roofs, for economic, environmental, and…”
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Cyclodextrin-enhanced vertical flushing of a trichloroethene contaminated aquifer by Blanford, W.J, Barackman, M.L, Boving, T.B, Klingel, E.J, Johnson, G.R, Brusseau, M.L

“…Pilot‐scale testing of an innovative ground water remediation technology was conducted in a source zone of a trichloroethene‐contaminated Superfund site in…”
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A Laboratory Comparison of Green-Roof Runoff Quality by Buccola, Norman, Spolek, Graig, Johnson, Gwynn R

“…Increasingly, building owners and city planners turning to vegetated roofing systems, commonly as green-roofs, for economic, environmental, and benefits. Many…”
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