Ramón Aravena

Active phytoextraction of toluene shifts the microbiome and enhances degradation capacity in hybrid poplar

Michael BenIsrael, Dasiel Obregón, Philipp Wanner, Jeremy Fernandes et autres

Hybrid poplars are widely recognized for their effectiveness in remediating subsurface aromatic hydrocarbon contaminants, including benzene, toluene, ethylbenzene, and xylene isomers (BTEX). While BTEX compounds are frequently found in the transpiration streams of poplars at contaminated sites, the microbial dynamics within these …

ca, se, us (code pays fourni par la source)

Field demonstration for the solvent-based sampling method to perform compound-specific isotope analysis on gas-phase VOC

Daniel Bouchard, Daniel Hunkeler, Massimo Marchesi, Ramón Aravena et autres

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Chlorinated ethenes characterization using high-resolution rock core analysis in a weathered crystalline rock aquifer in São Paulo, Brazil

P. Lojkasek-Lima, Reginaldo Antônio Bertolo, Daphne Silva Pino, L. G. G. Fregona et autres

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Hydrochemical and isotopic evaluation of groundwater and river water in the transboundary Silala River watershed

Ramón Aravena, Christian Herrera, Javier Urrutia

Abstract This article reviews a hydro‐chemical and isotopic study aiming to provide information about groundwater‐surface water interactions in the Silala River, a transboundary basin shared between Chile and Bolivia. The chemical and isotopic data show: The springs located in the northern section …

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Hydrogeochemical and isotopic evaluation of VOC commingled plumes in a weathered fractured bedrock aquifer treated with thermal and bioremediation

Sasha Tom Hart, Reginaldo Antônio Bertolo, Maria S. Agostini, Roland Feig et autres

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Uso dos isótopos 15N e 18O em nitrato e a sua importância em estudos de contaminação de aquíferos urbanos na América Latina

Cláudia Varnier, Alexandra Suhogusoff, Ricardo Hirata, Ramón Aravena

Este trabalho analisa o estado atual do conhecimento sobre o uso de isótopos estáveis (15N e 18O) na identificação de fontes de nitrato e os processos que controlam o transporte e transformação das espécies nitrogenadas em aquíferos situados em áreas urbanas e …

Geochemical and isotopic evidence for pumping-induced impacts to bedrock groundwater quality in the City of Guelph, Canada

Monique Nunes, Ramón Aravena, Beth L. Parker

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Multi-isotopic regional-scale screening on drinking groundwater in Lombardy Region (Italy)

Chiara Sbarbati, Maurizio Gorla, Alessandro Lacchini, Agata Cristaldi et autres

Groundwater is the main and safest source of water used for drinking purposes in many urban and rural communities worldwide. A deep knowledge of aquifer systems in terms of quality, vulnerability and renewability is fundamental to preserving groundwater resources. Thanks to contributions …

ca (code pays fourni par la source)

Identification of degrader bacteria and fungi enriched in rhizosphere soil from a toluene phytoremediation site using DNA stable isotope probing

Michael BenIsrael, Jemaneh Z. Habtewold, Kamini Khosla, Philipp Wanner et autres

Improved knowledge of the ecology of contaminant-degrading organisms is paramount for effective assessment and remediation of aromatic hydrocarbon-impacted sites. DNA stable isotope probing was used herein to identify autochthonous degraders in rhizosphere soil from a hybrid poplar phytoremediation system incubated under semi-field-simulated …

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Gene abundances of AOA, AOB, and anammox controlled by groundwater chemistry of the Pearl River Delta, China

Kun Liu, Xin Juan Luo, Jiu Jimmy Jiao, Ji‐Dong Gu et autres

Ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and anaerobic ammonia-oxidation (anammox) bacteria are very important contributors to nitrogen cycling in natural environments. Functional gene abundances of these microbes were believed to be well relevant to N-cycling in groundwater systems, especially in the Pearl …

Influence of Individual mechanisms and remediation concerns involved in the enhanced attenuation of toluene in a shallow fractured dolostone bedrock

Saeid Shafieiyoun, Beth L. Parker, Kari E. Dunfield, Neil R. Thomson et autres

Use of isotopes techniques to reveal the origin of water salinity in an arid region of Central-Western Argentina

María Laura Gomez, A. Martínez Álvarez, D. Sabina D’Ambrosio, Gualberto Zalazar et autres

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