Exploració per autor "Sánchez Vila, Francisco Javier"
Ara es mostren els items 34-53 de 63
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Linking biofilm spatial structure to real-time microscopic oxygen decay imaging
Rubol, Simonetta; Freixa, Anna; Sánchez Vila, Francisco Javier; Romani Cornet, Anna Maria (2018-02)
Article
Accés obertTwo non-destructive techniques, confocal laser scanning microscopy (CLSM) and planar optode (VisiSens imaging), were combined to relate the fine-scale spatial structure of biofilm components to real-time images of oxygen ... -
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 ... -
Microbial activity enhancement in constructed wetlands operated as bioelectrochemical systems
Fernández Gatell, Marta; Corbella Vidal, Clara; Sánchez Vila, Francisco Javier; Puigagut Juárez, Jaume (2022-01)
Article
Accés obertTreatment wetlands (TW) operated as bioelectrochemical systems (BES-TW) provide a higher degree of treatment than conventional TW. Yet, the fundamental processes or mechanisms for the envisaged better performance of BES-TW ... -
Microbial community changes induced by Managed Aquifer Recharge activities: linking hydrogeological and biological processes
Barba Ferrer, Maria del Carme; Folch Sancho, Albert; Gaju Ricart, Nuria; Sánchez Vila, Francisco Javier; Carrasquilla Gallego, Marc; Grau Martinez, Alba; Martínez Alonso, Maira (2019-01)
Article
Accés obertManaged Aquifer Recharge (MAR) is a technique used worldwide to increase the availability of water resources. We study how MAR modifies microbial ecosystems and its implications for enhancing biodegradation processes to ... -
Mobility and interaction of heavy metals in a natural soil
Bianchi Janetti, Emanuela; Dror,Ishai; Riva, Monica; Guadagnini, Alberto; Sánchez Vila, Francisco Javier; Berkowitz, Brian (2013-04)
Article
Accés restringit per política de l'editorialWe study the mobility and interaction under competing conditions observed for copper (Cu2+) and zinc (Zn2+) ions in the context of laboratory-scale experiments performed in natural soil columns. The experiments focus on ... -
Modeling long term Enhanced in situ Biodenitrification and induced heterogeneity in column experiments under different feeding strategies
Rodríguez Escales, Paula-Felicidad; Folch Sancho, Albert; Van Breukelen, Boris; Vidal Gavilan, Georgina; Sánchez Vila, Francisco Javier (Elsevier, 2016-07)
Article
Accés obertEnhanced In situ Biodenitrification (EIB) is a capable technology for nitrate removal in subsurface water resources. Optimizing the performance of EIB implies devising an appropriate feeding strategy involving two design ... -
Modeling the fate of UV filters in subsurface: co-metabolic degradation and the role of biomass in sorption processes
Rodríguez Escales, Paula-Felicidad; Sánchez Vila, Francisco Javier (Elsevier, 2020-01)
Article
Accés obertUltraviolet filters (UVFs) are emerging organic compounds found in most water systems. They are constituents of personal care products, as well as industrial ones. The concentration of UVFs in the water bodies in space and ... -
Modelling a large oil spill in the aquifer of the Llobregat Lower Valley, Barcelona
Custodio Gimena, Emilio; Carrera Ramírez, Jesús; Sánchez Vila, Francisco Javier; Medina Sierra, Agustín; Manzano Arellano, María del Sol; Galarza López, German (European Center for Pollution research, 1993)
Text en actes de congrés
Accés restringit per política de l'editorialAbout 70 m3 of gasoline were poured as the result of an intentíonal breakdown of a major pipeline along the Lower Llobregat Valley. The main groundwater aquifer of the Barcelona area was affected by the gasoline that was ... -
Multicomponent reactive transport in multicontinuum media
Donado, Leonardo David; Sánchez Vila, Francisco Javier; Dentz, Marco; Carrera Ramírez, Jesús; Bolster, Diogo (2009)
Article
Accés obertMulticomponent reactive transport in aquifers is a highly complex process, owing to a combination of variability in the processes involved and the inherent heterogeneity of nature. To date, the most common approach is to ... -
On multi-model assessment of complex degradation paths: the fate of diclofenac and its transformation products
Ceresa, Laura; Guadagnini, Alberto; Rodríguez Escales, Paula-Felicidad; Riva, Monica; Sánchez Vila, Francisco Javier; Porta, Giovanni M. (John Wiley & sons, 2023-01)
Article
Accés obertWe present a methodology to quantify the impact of model structure and parametric uncertainty on formulations targeting biotransformation processes of Emerging Contaminants in subsurface water resources. The study is ... -
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 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. ... -
Power assisted MFC-based biosensor for continuous assessment of microbial activity and biomass in freshwater ecosystems
Fernández Gatell, Marta; Sánchez Vila, Francisco Javier; Puigagut Juárez, Jaume (Elsevier, 2022-08)
Article
Accés obertMicrobial activity and biomass are important factors that determine nutrient and carbon fluxes in freshwater ecosystems and, therefore are also related to both water quality and climate change induced stressors. This study ... -
Probabilistic assessment of spatial heterogeneity of natural background concentrations in large-scale groundwater bodies through Functional Geostatistics
Guadagnini, Laura; Menafoglio, Alessandra; Sánchez Vila, Francisco Javier; Guadagnini, Alberto (Elsevier, 2020-10)
Article
Accés obertWe propose and exemplify a framework to assess Natural Background Levels (NBLs) of target chemical species in large-scale groundwater bodies based on the context of Object Oriented Spatial Statistics. The approach enables ... -
Quantitative comparison of impeller flowmeter and particle-size dsitribution techniques for the characterization of hydraulic conductivity variability
Barahona-Palomo, Marco; Riva, Mònica; Sánchez Vila, Francisco Javier; Vázquez Suñé, Enric; Guadagnini, Alberto (2010-05-07)
Text en actes de congrés
Accés obertBasic univariate statistics and key geostatistical parameters of estimates of hydraulic conductivity obtained at the decimeter scale by two different methods are presented and compared. The two estimates are based on (1) ... -
Reactive transport modeling of leaking CO2-saturated brine along a fractured pathway
Ahmad, Nawaz; Worman, Anders; Bottaccin Busolin, Andrea; Sánchez Vila, Francisco Javier (John Gale, 2015-11)
Article
Accés obertOne concern regarding the underground storage of carbon dioxide (CO2) is its potential leakage from reservoirs. Over short period of time, the leakage risk is related mainly to CO2 as a separate supercritical fluid phase. ... -
Redes de comunicaciones : de la telefonía móvil a Internet
Beltran Sanchidrian, Victòria; Casals Ibáñez, Lluís; Catalán Cid, María Luisa; Catalán Cid, Miguel; García Villegas, Eduard; Gómez Montenegro, Carlos; Hesselbach Serra, Xavier; López Aguilera, M. Elena; Paradells Aspas, Josep; Sánchez Vila, Francisco Javier; Vidal Ferré, Rafael; Calveras Augé, Anna M. (Universitat Politècnica de Catalunya, 2010)
Llibre
Accés restringit als usuaris de la UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UICVivimos completamente rodeados por una miríada de dispositivos electrónicos interconectados, que a su vez originan nuevos servicios y nuevas formas de entender y establecer las relaciones sociales. Nuevas palabras y conceptos ... -
Revisiting the analytical solution approach to mixing-limited equilibrium multicomponent reactive transport using mixing ratios: identification of basis, fixing an error, and dealing with multiple minerals
Ginn, T. R.; Schreyer, L. G.; Sánchez Vila, Francisco Javier; Nassar, M. K.; Ali, A. A.; Krautle, S. (2017-11)
Article
Accés obertMulticomponent reactive transport involves the solution of a system of nonlinear coupled partial differential equations. A number of methods have been developed to simplify the problem. In the case where all reactions are ... -
Role of soil biofilms in clogging and fate of pharmaceuticals: a laboratory-scale column experiment
Muñoz Vega, Edinsson; Schulz, Stephan; Rodríguez Escales, Paula-Felicidad; Behle, Vera Rebecca; Spada, Lucas; Vogel, Alexander L.; Sánchez Vila, Francisco Javier; Schüth, Christoph (American Chemical Society, 2023-08)
Article
Accés obertContamination of groundwater with pharmaceutical active compounds (PhACs) increased over the last decades. Potential pathways of PhACs to groundwater include techniques such as irrigation, managed aquifer recharge, or bank ...