Search Results - "Pignatello, J.J."

Activity and Reactivity of Pyrogenic Carbonaceous Matter toward Organic Compounds by Pignatello, J. J, Mitch, William A, Xu, Wenqing

“…Pyrogenic carbonaceous matter (PCM) includes environmental black carbon (fossil fuel soot, biomass char), engineered carbons (biochar, activated carbon), and…”
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Influence of Bisolute Competition on the Desorption Kinetics of Polycyclic Aromatic Hydrocarbons in Soil by White, Jason C, Pignatello, Joseph J

“…The dual-mode (partition/hole-filling) model of soil organic matter (SOM) as a heterogeneous polymerlike sorbent of hydrophobic compounds predicts that a…”
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Persistence of 1,2-dibromoethane in soils: entrapment in intraparticle micropores by Steinberg, Spencer M, Pignatello, Joseph J, Sawhney, Brij L

“…The soil fumigant 1,2-dibromoethane (EDB) was found in topsoils from agricultural sites up to 19 years after its last known application. The desorption and…”
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Enhancing the bioavailability of organic compounds sequestered in soil and aquifer solids by White, J.C, Alexander, M, Pignatello, J.J

“…A study was conducted to find ways to increase the biodegradability of compounds that have aged in soil or aquifer material and become less bioavailable…”
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Characterization of Charcoal Adsorption Sites for Aromatic Compounds:  Insights Drawn from Single-Solute and Bi-Solute Competitive Experiments by Sander, Michael, Pignatello, Joseph J

“…Charcoal, the residue of incomplete biomass burning that is found in many soils and sediments, is considered a high affinity sorbent for organic pollutants…”
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Active removal of biochar by earthworms (Lumbricus terrestris) by Elmer, W.H., Lattao, C.V., Pignatello, J.J.

“…•What role do earthworms play in cycling biochar in the soil column?•Lumbricus terrestris was allowed to interact with different biochars in soil.•The biochar…”
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thermodynamically based method to quantify true sorption hysteresis by Sander, M, Lu, Y, Pignatello, J.J

“…Sorption of organic chemicals to soils and sediments often shows true hysteresis (i.e., nonsingularity of the sorption-desorption isotherm not attributable to…”
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Sorption irreversibility of 1,4-dichlorobenzene in two natural organic matter-rich geosorbents by Sander, Michael, Pignatello, Joseph J

“…Hysteresis, a frequently observed phenomenon in sorption studies, is inconsistent with the key assumption of sorption reversibility in most fate and…”
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Mechanisms of Slow Sorption of Organic Chemicals to Natural Particles by Pignatello, Joseph J, Xing, Baoshan

“…The use of equilibrium expressions for sorption to natural particles in fate and transport models is often invalid due to slow kinetics. This paper reviews…”
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Dual-Mode Sorption of Low-Polarity Compounds in Glassy Poly(Vinyl Chloride) and Soil Organic Matter by Xing, Baoshan, Pignatello, Joseph J.

“…The widely accepted dissolution (partition) model of sorption to soil organic matter (SOM) has been challenged by evidence that SOM has a non-uniform sorption…”
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Sorption of apolar aromatic compounds to soil humic acid particles affected by aluminum(III) ion cross-linking by Lu, Y, Pignatello, J.J

“…Sorption of hydrophobic compounds in soils often shows nonlinearity, competition, and hysteresis. Since such behaviors have been associated with organic…”
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Role of Quinone Intermediates as Electron Shuttles in Fenton and Photoassisted Fenton Oxidations of Aromatic Compounds by Chen, Ruzhong, Pignatello, Joseph J

“…Fenton and related reactions are potentially useful oxidation processes for destroying toxic organic compounds in water. In these reactions, H2O2 is combined…”
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Formation of pi-pi complexes between phenanthrene and model pi-acceptor humic subunits by Wijnja, H, Pignatello, J.J, Malekani, K

“…pi-pi Interactions may play a role in association of aromatic compounds with natural organic substances. Complexation in aqueous solvents was studied between…”
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Nonlinear and Competitive Sorption of Apolar Compounds in Black Carbon-Free Natural Organic Materials by Pignatello, J.J, Lu, Y, LeBoeuf, E.J, Huang, W, Song, J, Xing, B

“…Numerous studies have reported a spectrum of sorption phenomena in soils, sediments, and organic matter isolates of those materials that are inconsistent with…”
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Mobilization of soil organic matter by complexing agents and implications for polycyclic aromatic hydrocarbon desorption by Yang, Y, Ratté, D, Smets, B.F, Pignatello, J.J, Grasso, D

“…Complexing agents are frequently used in treatment technologies to remediate soils, sediments and wastes contaminated with toxic metals. The present study…”
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Competitive Sorption between Atrazine and Other Organic Compounds in Soils and Model Sorbents by Xing, B. (University of Massachusetts, Amherst, MA.), Pignatello, J.J, Gigliotti, B

“…This is part of a larger study that addresses the question of whether site-specific sorption of organic compounds takes place in soil organic matter (SOM)…”
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Micellar desorption of polynuclear aromatic hydrocarbons from contaminated soil by Grasso, D, Subramaniam, K, Pignatello, J.J, Yang, Y, Ratté, D

“…Efficacious application of in situ surfactant-aided biodegradation for polynuclear aromatic hydrocarbon (PAH) compounds requires a sound understanding of the…”
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Competitive Sorption between 1,3-Dichlorobenzene or 2,4-Dichlorophenol and Natural Aromatic Acids in Soil Organic Matter by Xing, Baoshan, Pignatello, Joseph J

“…Previously, we showed that sorption of anthropogenic organic compounds in soils is competitive as a result of the heterogeneous sorption potential of soil…”
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Time-dependent isotherm shape of organic compounds in soil organic matter: implications for sorption mechanism by Xing, Baoshan, Pignatello, Joseph J.

“…Batch 1-, 30-, and 180-d sorption isotherms were constructed for 1,3-dichlorobenzene, 2,4-dichlorophenol, and metolachlor…”
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Evidence for a surface dual hole-radical mechanism in the TiO2 photocatalytic oxidation of 2,4-dichlorophenoxyacetic acid by YUNFU SUN, PIGNATELLO, J. J

“…The photocatalytic degradation of 2,4-dichlorophenoxyacetic acid in UV-illuminated aqueous TiO2 suspension is examined at pH 1-12…”
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