Search Results - "Freitas, Juliana G."

Methane Production and Isotopic Fingerprinting in Ethanol Fuel Contaminated Sites by Freitas, Juliana G, Fletcher, Barbara, Aravena, Ramon, Barker, James F

“…Biodegradation of organic compounds in groundwater can be a significant source of methane in contaminated sites. Methane might accumulate in indoor spaces…”
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Oxygenated gasoline release in the unsaturated zone, Part 2: Downgradient transport of ethanol and hydrocarbons by Freitas, Juliana G., Doulatyari, Behnam, Molson, John W., Barker, James F.

“…In the event of a gasoline spill containing oxygenated compounds such as ethanol and MTBE, it is important to consider the impacts these compounds might have…”
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Heterogeneous hyporheic zone dechlorination of a TCE groundwater plume discharging to an urban river reach by Freitas, Juliana G., Rivett, Michael O., Roche, Rachel S., Durrant (neé Cleverly), Megan, Walker, Caroline, Tellam, John H.

“…The typically elevated natural attenuation capacity of riverbed-hyporheic zones is expected to decrease chlorinated hydrocarbon (CHC) groundwater plume…”
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Natural Persulfate Activation for Anthracene Remediation in Tropical Environments by Ferreira, Ieda D., Prieto, Tatiana, Freitas, Juliana G., Thomson, Neil R., Nantes, Iseli L., Bechara, Etelvino J. H.

“…In situ chemical oxidation using persulfate is one alternative to remediate polycyclic aromatic hydrocarbon-contaminated soil; however, oxidation can lead to…”
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Hexadecane biodegradation of high efficiency by bacterial isolates from Santos Basin sediments by Ferrari, Vitor B., Cesar, Augusto, Cayô, Rodrigo, Choueri, Rodrigo B., Okamoto, Débora N., Freitas, Juliana G., Favero, Mariana, Gales, Ana C., Niero, Cristina V., Saia, Flavia T., de Vasconcellos, Suzan P.

“…The aim of the study was the investigation of bacterial diversity from sediments collected at Santos Estuarine System, regarding to their abilities for…”
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Two New Species of Pleroma (Melastomataceae) from Brazil by Guimarães, Paulo José Fernandes, Freitas, Juliana G.

“…Pleroma michelangelii, a new species of Melastomeae (Melastomataceae) from Brazil is described and illustrated, and compared to its putative closest relatives…”
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Denatured ethanol release into gasoline residuals, Part 2: Fate and transport by Freitas, Juliana G., Barker, James F.

“…When denatured ethanol (E95) is spilled in a site with previous gasoline contamination, it modifies the source distribution (Part 1). But it can also impact…”
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Oxygenated gasoline release in the unsaturated zone — Part 1: Source zone behavior by Freitas, Juliana G., Barker, James F.

“…Oxygenates present in gasoline, such as ethanol and MTBE, are a concern in subsurface contamination related to accidental spills. While gasoline hydrocarbon…”
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Persulfate Interaction with Tropical Soils by Oliveira, Fernanda C., Freitas, Juliana G., Furquim, Sheila A. C., Rollo, Renata M., Thomson, Neil R., Alleoni, Luís R. F., Nascimento, Claudio A. O.

“…Persulfate use as a chemical oxidant for remediation of contaminated sites has increased due to its higher in situ persistence and reactivity with…”
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Denatured ethanol release into gasoline residuals, Part 1: Source behaviour by Freitas, Juliana G., Barker, James F.

“…With the increasing use of ethanol in fuels, it is important to evaluate its fate when released into the environment. While ethanol is less toxic than other…”
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Migration and fate of ethanol-enhanced gasoline in groundwater: A modelling analysis of a field experiment by Freitas, Juliana G., Mocanu, Marian T., Zoby, José Luiz G., Molson, John W., Barker, James F.

“…Ethanol use as a gasoline additive is increasing, as are the chances of groundwater contamination caused by gasoline releases involving ethanol. To evaluate…”
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Monitoring Lateral Transport of Ethanol and Dissolved Gasoline Compounds in the Capillary Fringe by Freitas, Juliana G., Barker, James F.

“…Fuel mixtures composed of gasoline and ethanol are lighter than water and, if enough volume is released into the unsaturated zone, they accumulate in the…”
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A New and Unusual Species of Tibouchina (Melastomataceae) Occurring in Caatinga Vegetation in Bahia, Brazil by Freitas, Juliana G., Santos, Andrea Karla A., Guimarães, Paulo José F., Oliveira, Reyjane P.

“…Tibouchina caatingae, a new species of Melastomataceae (Melastomeae), is herein described and illustrated. This species has been collected only in areas…”
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Tibouchina bracteolata and T. comosa (Melastomataceae, Melastomeae): Two New Species to the Chapada Diamantina, Bahia, Brazil by Freitas, Juliana G., Santos, Andrea K. A., Oliveira, Reyjane P.

“…Two new species of Tibouchina, tribe Melastomeae (Melastomataceae), are herein described, illustrated and compared with their congeners. Tibouchina bracteolata…”
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Simulating the evolution of an ethanol and gasoline source zone within the capillary fringe by Yu, Soonyoung, Freitas, Juliana G., Unger, Andre J.A., Barker, James F., Chatzis, John

“…Blending of ethanol into gasoline as a fuel oxygenate has created the scenario where inadvertent releases of E95 into soil previously contaminated by gasoline…”
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Sampling VOCs with Porous Suction Samplers in the Presence of Ethanol: How Much Are We Losing? by Freitas, Juliana G., Barker, James F.

“…Porous suction samplers have been widely used to obtain ground water samples from the vadose zone. However, previous studies identified different mechanisms…”
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Monitoring of sequential gasoline-ethanol releases using high frequency ground penetrating radar by McNaughton, C H, Mosquera, J D, Endres, A L, Freitas, J G

“…Our hydrogeophysical field experiment evaluated the ability of high frequency (450 & 900 MHz) ground penetrating radar (GPR) to monitor sequential releases of…”
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AVALIAÇÃO DA INTERAÇÃO DO OXIDANTE PERSULFATO COM UM LATOSSOLO VERMELHO-AMARELO by Maitê Lima Bossi, Hana Okabe Silva, Juliana G. Freitas, Sheila A. C. Furquim

“…Atualmente é crescente a preocupação com a qualidade do solo e das águas subterrâneas, pois sua contaminação pode apresentar grande risco à saúde humana e aos…”
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IMPACTO DA ZONA NÃO-SATURADA NO COMPORTAMENTO DO ETANOL APÓS DERRAMAMENTO DE GASOLINA by Juliana G. Freitas, James F. Barker

“…O etanol é usado como aditivo na gasolina no Brasil e o seu uso em outros países vem aumentando gradativamente. Quando ocorrem vazamento acidentais de…”
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