Exploració per autor "Fernández García, Daniel"
Ara es mostren els items 21-40 de 50
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Elimination of the reaction rate 'scale effect': application of the Lagrangian reactive particle-tracking method to simulate mixing-limited, field-scale biodegradation at the Schoolcraft (MI, USA) site
Dong, Ding; Benson, David A.; Fernández García, Daniel; Henri, Christopher Vincent; Hyndman, David W.; Phanikumar, Mantha S.; Bolster, Diogo (2017-12)
Article
Accés obertMeasured (or empirically fitted) reaction rates at groundwater remediation sites are typically much lower than those found in the same material at the batch or laboratory scale. The reduced rates are commonly attributed ... -
Enhanced NAPL removal and mixing with engineered injection and extraction
Wang, Yufei; Fernández García, Daniel; Solé Marí, Guillem; Rodríguez Escales, Paula-Felicidad (2022-04)
Article
Accés obertAquifer remediation with in-situ soil washing techniques and enhanced oil removal typically involves the injection of liquid solutions into the geological formation to displace and mobilize non-aqueous phase liquids (NAPLs). ... -
Enhancing mixing during groundwater remediation via engineered injection-extraction: the issue of connectivity
Bertran Oller, Oriol; Fernández García, Daniel; Solé Marí, Guillem; Rodríguez Escales, Paula-Felicidad (John Wiley & sons, 2023-07)
Article
Accés obertIn the context of in situ groundwater remediation, mixing is vital for a successful outcome. A slow mixing rate between the contaminated groundwater and the injected treatment solution can severely weaken the effective ... -
Evaluación de las medidas de humedad de suelo generadas con datos disgregados de satélite a escala de parcela agrícola
Fontanet Ambrós, Mireia; Fernández García, Daniel; Ferrer, Fernado; Rodrigo, G (2017)
Text en actes de congrés
Accés obertEl interés de medir la humedad de suelo a escala de parcela de cultivo mediante teledetección ha aumentado debido a la fácil disponibilidad de los datos y, que a diferencia de los sensores de humedad de suelo, no es necesario ... -
Evidence of groundwater vulnerability to climate variability and economic growth in coastal Kenya
Ferrer Ramos, Nuria; Folch Sancho, Albert; Fernández García, Daniel; Lane, Mike; Thomas, Mike; Gathenya, John Mwangi; Wara, Calvince; Thomson, Patrick; Custodio Gimena, Emilio; Hope, Rob (Elsevier, 2020-07)
Article
Accés obertClimate change and future abstraction regimes will influence the availability of groundwater resources. To alleviate any potential negative effects on aquifer systems and dependent industrial and human uses, it is important ... -
Generalizing Agarwal's method for the interpretation of recovery tests under non-ideal conditions
Trabucchi, Michela; Carrera Ramírez, Jesús; Fernández García, Daniel (2018-09)
Article
Accés obertPumping tests are performed during aquifer characterization to gain conceptual understanding about the system through diagnostic plots and to estimate hydraulic properties. Recovery tests consist of measuring head response ... -
GIS-based software platform for managing hydrogeochemical data
Velasco Mansilla, Domitila Violeta; Vázquez Suñé, Enric; García Alcaraz, María del Mar; Serrano Juan, Alejandro; Tubau Fernandez, Isabel; Sánchez Vila, Francisco Javier; Fernández García, Daniel; Garrido, Teresa; Fraile, Josep (Springer, 2016)
Capítol de llibre
Accés restringit per política de l'editorialIn over three decades, The Handbook of Environmental Chemistry has established itself as the premier reference source, providing sound and solid knowledge about environmental topics from a chemical perspective. Written by ... -
Guía técnica para la evaluación de la problemática del subsuelo asociada a compuestos organoclorados
Fernández García, Daniel; Carles Brangari, Albert; Freixas Borrell, Genís (2004-01)
Report de recerca
Accés obertLa protecció dels sòls contaminats és un dels requeriments medioambientals fixats per la llei de residuos 10/1994 i el real decret 9/2005. Fruit d’aquests i altres canvis normatius derivats de la nova cultura medioambiental, ... -
Improving degradation of emerging organic compounds by applying chaotic advection in Managed Aquifer Recharge in randomly heterogeneous porous media
Rodríguez Escales, Paula-Felicidad; Fernández García, Daniel; DRECHSEL, J.; Folch Sancho, Albert; Sánchez Vila, Francisco Javier (2017-05)
Article
Accés obertImproving degradation rates of emerging organic compounds (EOCs) in groundwater is still a challenge. Although their degradation is not fully understood, it has been observed that some substances are preferably degraded ... -
Improving the accuracy of risk prediction from particle-based breakthrough curves reconstructed with kernel density estimators
Siirila, Erica; Fernández García, Daniel; Sánchez Vila, Francisco Javier (2015-06)
Article
Accés obertWhile particle tracking techniques are often used in risk frameworks, the number of particles needed to properly derive risk metrics such as average concentration for a given exposure duration is often unknown. If too few ... -
Lagrangian modeling of reactive transport in heterogeneous porous media with an automatic locally adaptive particle support volume
Solé Marí, Guillem; Fernández García, Daniel (2018-10)
Article
Accés obertThe particle support volume is crucial for simulating reactive transport with Lagrangian methods as it dictates the interaction among particles. Assuming that it is constant in space, the particle support volume can be ... -
Mathematical equivalence between time-dependent single-rate and multirate mass transfer models
Fernández García, Daniel; Sánchez Vila, Francisco Javier (2015-05)
Article
Accés obertThe often observed tailing of tracer breakthrough curves is caused by a multitude of mass transfer processes taking place over multiple scales. Yet, in some cases, it is convenient to fit a transport model with a single-rate ... -
Modeling reactive multi-component multi-phase flow for Geological Carbon Sequestration (GCS) with Matlab
Wang, Yufei; Fernández García, Daniel; Saaltink, Maarten Willem (2023-03)
Article
Accés restringit per política de l'editorialWe present a reactive multi-component multi-phase flow program for simulating Geological Carbon Sequestration (GCS), an approach that reduces carbon emissions by storing in deep subsurface formations. The program, called ... -
Multiprocessing for the particle tracking model MODPATH
Pérez Illanes, Rodrigo Alfonso; Fernández García, Daniel (Wiley, 2022-12)
Article
Accés obertParticle tracking has several important applications for solute transport studies in aquifer systems. Travel time distribution at observation points, particle coordinates in time and streamlines are some practical results ... -
On the formation of multiple local peaks in breakthrough curves
Siirila, Erica; Sánchez Vila, Francisco Javier; Fernández García, Daniel (2015-04)
Article
Accés obertThe analysis of breakthrough curves (BTCs) is of interest in hydrogeology as a way to parameterize and explain processes related to anomalous transport. Classical BTCs assume the presence of a single peak in the curve, ... -
Optimal reconstruction of non-symmetric travel time density distributions using a new kernel density estimator
Pedretti, Daniele; Fernández García, Daniel (2013)
Text en actes de congrés
Accés obert -
Optimal reconstruction of reaction rates from particles distributions
Fernández García, Daniel; Sánchez Vila, Francisco Javier (2010-05-07)
Text en actes de congrés
Accés obertRandom walk particle tracking methodologies to simulate solute transport of conservative species constitute an attractive alternative for their computational efficiency and absence of numerical dispersion. Yet, problems ... -
Particle density estimation with grid-projected and boundary-corrected adaptive kernels
Solé Marí, Guillem; Bolster, Diogo; Fernández García, Daniel; Sánchez Vila, Francisco Javier (Elsevier, 2019-09)
Article
Accés obertThe reconstruction of smooth density fields from scattered data points is a procedure that has multiple applications in a variety of disciplines, including Lagrangian (particle-based) models of solute transport in fluids. ... -
Probabilistic human health risk assessment of degradation-related chemical mixtures in heterogeneous aquifers: risk statistics, hot spots, and preferential channels
Henri, Christopher Vincent; Fernández García, Daniel; Barros, Felipe de (2015-06)
Article
Accés obertThe increasing presence of toxic chemicals released in the subsurface has led to a rapid growth of social concerns and the need to develop and employ models that can predict the impact of groundwater contamination on human ... -
Random-walk modeling of reactive transport in porous media with a reduced-order chemical basis of conservative components
Solé Marí, Guillem; Schmidt, Michael J.; Bolster, Diogo; Fernández García, Daniel (2021-04)
Article
Accés obertIn this work we employ a reduced-order basis of conservative chemical components to model reactive transport using a Lagrangian (particle tracking) method. While this practice is well-understood in the Eulerian (grid-based) ...