Browsing by Author "Sánchez Vila, Francisco Javier"
Now showing items 1-20 of 58
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A bilayer coarse-fine infiltration system minimizes bioclogging: the relevance of depth-dynamics
Perujo Buxeda, Nuria; Romani Cornet, Anna Maria; Sánchez Vila, Francisco Javier (Elsevier, 2019-06)
Article
Open AccessBioclogging is a main concern in infiltration systems as it may significantly shorten the service life of these low-technology water treatment methods. In porous media, biofilms grow to clog partially or totally the pore ... -
A KDE-based random walk method for modeling reactive transport with complex kinetics in porous media
Solé Marí, Guillem; Fernández García, Daniel; Rodríguez Escales, Paula-Felicidad; Sánchez Vila, Francisco Javier (2017-11)
Article
Open AccessIn recent years, a large body of the literature has been devoted to study reactive transport of solutes in porous media based on pure Lagrangian formulations. Such approaches have also been extended to accommodate second-order ... -
A locally adaptive kernel regression method for facies delineation
Fernández García, Daniel; Barahona-Palomo, Marco; Henri, Christopher Vincent; Sánchez Vila, Francisco Javier (2015-12-01)
Article
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A mechanistic model (BCC-PSSICO) to predict changes in the hydraulic properties for bio-amended variably saturated soils
Carles Brangari, Albert; Sánchez Vila, Francisco Javier; Freixa Casals, Anna; Romani Cornet, Anna Maria; Rubol, Simonetta; Fernández García, Daniel (2017-01)
Article
Open AccessThe accumulation of biofilms in porous media is likely to influence the overall hydraulic properties and, consequently, a sound understanding of the process is required for the proper design and management of many technological ... -
A risk assessment methodology to evaluate the risk failure of managed aquifer recharge in the Mediterranean Basin
Rodríguez Escales, Paula-Felicidad; Canelles Garcia, Arnau; Sánchez Vila, Francisco Javier; Folch Sancho, Albert (2018-06)
Article
Open AccessManaged aquifer recharge (MAR) can be affected by many risks. Those risks are related to different technical and non-technical aspects of recharge, like water availability, water quality, legislation, social issues, etc. ... -
A simple contaminant fate and transport modelling tool for management and risk assessment of groundwater pollution from contaminated sites
Locatelli, Luca; Binning, Philip J.; Sánchez Vila, Francisco Javier; Søndergaard, Gitte Lemming; Rosenberg, Louise; Bjerg, Poul L. (2019-02)
Article
Open AccessContaminated sites pose a significant threat to groundwater resources. The resources that can be allocated by water regulators for site investigation and cleanup are limited compared to the large number of contaminated ... -
An analytical solution to study substrate-microbial dynamics in soils
Sánchez Vila, Francisco Javier; Rubol, Simonetta; Carles Brangari, Albert; Fernández García, Daniel (Elsevier, 2013-04)
Article
Restricted access - publisher's policyWe provide an approximate analytical solution for the substrate-microbial dynamics of the organic carbon cycle in natural soils under hydro-climatic variable forcing conditions. The model involves mass balance in two carbon ... -
Are dominant microbial sub-surface communities affected by water quality and soil characteristics?
Barba Ferrer, Maria del Carme; Folch Sancho, Albert; Sánchez Vila, Francisco Javier; Martínez Alonso, Maira; Gaju Ricart, Nuria (2019-05)
Article
Open AccessSubsurface microorganisms must deal with quite extreme environmental conditions. The lack of light, oxygen, and potentially nutrients are the main environmental stresses faced by subsurface microbial communities. Likewise, ... -
Avaluació de riscos ambientals mitjançant modelació geoquímica
Sánchez Vila, Francisco Javier; Fernández García, Daniel (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
Conference lecture
Open AccessL'interés sobre la recàrrega artificial d'aqüífers s'ha incrementat en els últims anys. La recerca del Grup d'Hidrologia Subterrània (GHS) de l'ETSECCPB vol donar una visió integrada i multidisciplinar sobre el risc ... -
Bayesian estimation of the transmissivity spatial structure from pumping test data
Taner Demir, Mehmet; Copty, Nadim K.; Trinchero, Paolo; Sánchez Vila, Francisco Javier (Elsevier, 2017-06)
Article
Open AccessEstimating the statistical parameters (mean, variance, and integral scale) that define the spatial structure of the transmissivity or hydraulic conductivity fields is a fundamental step for the accurate prediction of ... -
Bilayer infiltration system combines benefits from both coarse and fine sands promoting nutrient accumulation in sediments and increasing removal rates
Perujo Buxeda, Nuria; Romani Cornet, Anna Maria; Sánchez Vila, Francisco Javier (2018-04)
Article
Open AccessInfiltration systems are treatment technologies based on water percolation through porous media where biogeochemical processes take place. Grain size distribution (GSD) acts as a driver of these processes and their rates ... -
Combining physical-based models and satellite images for the spatio-temporal assessment of soil infiltration capacity
Pedretti, Daniele; Fernández García, Daniel; Sánchez Vila, Francisco Javier; Barahona-Palomo, Marco; Bolster, Diogo (2011-05-29)
Article
Restricted access - publisher's policyThe performance of managed artificial recharge (MAR) facilities by means of surface ponds (SP) is controlled by the temporal evolution of the global infiltration capacity Ic of topsoils. Cost-effective maintenance operations ... -
Conditional moments of residence time of sorbent solutes under radial flow
Castillo-Cerdà, C.; Sánchez Vila, Francisco Javier; Nuñez-Calvet, Laia; Guadagnini, Alberto (2004)
Conference report
Restricted access - publisher's policy -
Conditional probability density functions of concentrations for mixing-controlled reactive transport in heterogeneous aquifers
Sánchez Vila, Francisco Javier; Guadagnini, Alberto; Fernández García, Daniel (2008)
Article
Open Access -
Conditional stochastic mapping of transport connectivity
Sánchez Vila, Francisco Javier; Fernández García, Daniel; Trinchero, Paolo (2010-05-07)
Conference report
Open AccessWe present a method for the stochastic simulation of point-to-point transport connectivity honoring data from three types of information: (a) travel time estimates obtained from field tracer tests; (b) estimates of flow ... -
Connecting bacterial colonization to physical and biochemical changes in a sand box infiltration experiment
Rubol, Simonetta; Freixa, Anna; Carles Brangari, Albert; Fernández García, Daniel; Romani Cornet, Anna Maria; Sánchez Vila, Francisco Javier (Elsevier, 2014-09-19)
Article
Restricted access - publisher's policyInfiltration through sediments is linked to complex biogeochemical processes occurring at small spatial scales, often leading to a progressive reduction in infiltration rates due to microbial growth and/or mechanical ... -
Coupling flow, heat, and reactive transport modeling to reproduce in situ redox potential evolution: application to an infiltration pond
Rodríguez Escales, Paula-Felicidad; Barba Ferrer, Maria del Carme; Sánchez Vila, Francisco Javier; Jacques, Diederik; Folch Sancho, Albert (2020-10)
Article
Open AccessRedox potential (Eh) measurements are widely used as indicators of the dominant reduction–oxidation reactions occurring underground. Yet, Eh data are mostly used in qualitative terms, as actual values cannot be used to ... -
Coupling of mass transfer and reactive transport for nonlinear reactions in heterogeneous media
Willmann, Mathias; Carrera Ramírez, Jesús; Sánchez Vila, Francisco Javier; Silva Rojas, Orlando Enrique; Dentz, Marco (2010-07-01)
Article
Open AccessFast chemical reactions are driven by mixing‐induced chemical disequilibrium. Mixing is poorly represented by the advection‐dispersion equation. Instead, effective dynamics models, such as multirate mass transfer (MRMT), ... -
Debates—Stochastic subsurface hydrology from theory to practice: why stochastic modeling has not yet permeated into practitioners?
Sánchez Vila, Francisco Javier; Fernández García, Daniel (2016-12)
Article
Open AccessWe address modern topics of stochastic hydrogeology from their potential relevance to real modeling efforts at the field scale. While the topics of stochastic hydrogeology and numerical modeling have become routine in ... -
Do we really need a large number of particles to simulate bimolecular reactive transport with random walk methods? A kernel density estimation approach
Rahbaralam, Maryam; Fernández García, Daniel; Sánchez Vila, Francisco Javier (2015-12)
Article
Open AccessRandom walk particle tracking methods are a computationally efficient family of methods to solve reactive transport problems. While the number of particles in most realistic applications is in the order of 106–109106–109, ...