Exploració per tema "Bentonita"

Ara es mostren els items 1-20 de 38

    • Advective gas flow in bentonite: development and comparison of enhanced multi-phase numerical approaches 

      Tamayo Mas, Elena; Harrington, J. F.; Puig Damians, Ivan; Olivella Pastallé, Sebastià; Radeisen, Eike; Rutqvist, Jonny; Wang, Y. (Elsevier, 2024-03)
      Article
      Accés obert
      Understanding the impact of repository gas, generated from degradation of waste and its interaction with the host rock, is essential when assessing the performance and safety function of long-term disposal systems for ...

    • Aprovechamiento de residuos queratínicos para la sorción de cobre de soluciones acuosas 

      Casadesús Fusté, Marta; Álvarez del Castillo, María Dolores; Macanás de Benito, Jorge; Colom Fajula, Xavier; Cañavate Ávila, Francisco Javier; Garrido Soriano, Núria; Molins Duran, Gemma; Carrillo Navarrete, Fernando (2020)
      Article
      Accés obert
      La industria avícola mundial genera una gran cantidad de residuos que en la actualidad son mayoritariamente desechados. Entre ellos, las plumas (CFs), estructuras queratínicas que presentan grupos funcionales y otras ...

    • Avaluació de sistemes d’adsorció per a la reducció de chlorpyrifos en la mantega de theobroma cacao L. durant el procés productiu 

      Rovira Cortès, Queralt (Universitat Politècnica de Catalunya, 2021-07-20)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Nederland, S.A.
      Cocoa bean, Theobroma cacao L., is used to make cocoa paste as a result of a roasting, peeling and grinding process. This cocoa paste or liqueur is pressed generating two by-products of different phases: a solid -cake- and ...

    • Beacon: bentonite mechanical evolution 

      Sellin, Patrick; Westermark, Mary; Leupin, Olivier; Norris, Simon; Gens Solé, Antonio; Wieczorek, Klaus; Talandier, Jean; Swahn, Johan (European Nuclear Society (ENS), 2020-05)
      Article
      Accés obert
      The aim of Beacon is to develop the understanding of fundamental processes that lead to material homogenisation, as well as to improve capabilities for numerical modelling. In earlier assessments of bentonite EBS, the ...

    • Bentonite strain due to cyclic suction changes 

      Villar Galicia, María Victoria; Lloret Morancho, Antonio (The Hong Kong University of Science and Technology (HKUST), 2018)
      Comunicació de congrés
      Accés obert
      A series of suction-controlled oedometer tests were performed on a highly compacted bentonite following drying/wetting and wetting/drying paths from the initial hygroscopic conditions (about 120 MPa) under low vertical ...

    • Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero 

      Navarro, Vicente; Asensio, Laura; Cabrera Soto, Virginia; de la Morena Borja, Gema; Yustres Real, Ángel; Torres Serra, Joel (Springer, 2023-05)
      Article
      Accés obert
      A formulation is proposed for reproducing the hydro-mechanical behaviour of compacted bentonites as interaggregate porosity becomes negligible. In that case, the model assumes the bentonite deformability to be controlled ...

    • Determining the macrostructural stability of compacted wyoming bentonites by a disaggregation method 

      Moreno Maroto, José Manuel; Merlo Espinosa, Óscar; Torres Serra, Joel; Alonso Azcárate, Jacinto; Tyrer, Mark; Navarro, Vicente (Multidisciplinary Digital Publishing Institute, 2023-10-11)
      Article
      Accés obert
      The use of compacted bentonites in radioactive waste repository barriers is a relevant application of geoenvironmental engineering. The on-site structural characteristics of the bentonites determine the performance and ...

    • Gas transport in a binary bentonite mixture used in sealing systems 

      Mesa Alcantara, Arisleidy; Romero Morales, Enrique Edgar; Mokni, Nadia (EDP Sciences, 2023)
      Article
      Accés obert
      Binary mixtures composed of 80% of high-density pellets and 20% of granular bentonite at hygroscopic water content are currently considered for use in vertical sealing systems for the deep and longterm disposal of radioactive ...

    • Highly expansive granular mixtures 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Hoffmann Jauge, Christian (CRC Press, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper describes the behavior of mixtures of highly compacted bentonite pellets. They are considered as a suitable impervious and tight barrier for nuclear waste disposal. Laboratory experiments aimed at identifying the ...

    • HM and THM interactions in bentonite engineered barriers for nuclear waste disposal 

      Gens Solé, Antonio; Alcoverro Bassols, Jordi; Blaheta, Radim; Hasal, Martin; Michalec, Zdenek; Takayama, Yusuke; Lee, Changsoo; Lee, Jaewon; Kim, Geon Young; Kuo, Wan-Jung; Chia-Wei, Kuo; Li, Chung-Yi (Elsevier, 2021-01)
      Article
      Accés obert
      Bentonite-based engineered barriers are a key component of many repository designs for the confinement of high-level radioactive waste and spent fuel. Given the complexity and interaction of the phenomena affecting the ...

    • Homogenización de barreras de arcilla para residuos nucleares 

      Gens Solé, Antonio; Barboza de Vasconcelos, Ramón; Rodríguez Romero, Carlos Eduardo; Vaunat, Jean; Villar Galicia, María Victoria (2021-07)
      Article
      Accés obert
      Las funciones de seguridad de las barreras de bentonita para residuos nucleares dependen principalmente del valor de su densidad seca (o porosidad). La evolución de esta variable durante la fase transitoria de la barrera ...

    • Homogenization of unsaturated bentonite during hydration 

      Gens Solé, Antonio; Barboza de Vasconcelos, Ramón; Rodríguez Romero, Carlos Eduardo; Vaunat, Jean; Villar Galicia, María Victoria (EDP Sciences, 2023)
      Article
      Accés obert
      Bentonite barriers are a key component in may designs of deep geological repositories for high level nuclear waste. During the hydration stage, the bentonite undergoes non-uniform changes in dry density that may persist ...

    • Hydration kinetics of compacted low-density bentonite 

      Dieudonné, A.C.; Charlier, R.; Romero Morales, Enrique Edgar (CRC Press, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The hydration kinetics of a compacted low-density bentonite is investigated from both experimental and numerical points of view. A water retention curve and water permeability under saturated conditions were determined to ...

    • Hydraulic behaviour of bentonite based mixtures in engineered barriers: The Backfill and Plug Test at the Äspö HRL (Sweden) 

      Mata Mena, Clemente (Universitat Politècnica de Catalunya, 2003-07-17)
      Tesi
      Accés obert
      In 1996 the Backfill and Plug Test Project started at the Äspö Hard Rock Laboratory (Sweden) managed by SKB (the Swedish Radioactive Waste Agency). The Backfill and Plug Test Project makes up an important part of SKB's ...

    • Hydro-mechanical behaviour of bentonite pellet mixtures 

      Hoffmann Jauge, Christian; Alonso Pérez de Agreda, Eduardo; Romero Morales, Enrique Edgar (Elsevier, 2007)
      Article
      Accés obert
      Granular mixtures made of high-density pellets of bentonite are being evaluated as an alternative buffer material for waste isolation. Ease of handling is an often-mentioned advantage. The paper described the experimental ...

    • Impact of the heterogeneity of a binary bentonite mixture on the gas transport behaviour 

      Macias Rodriguez, Juan Mauricio (Universitat Politècnica de Catalunya, 2023-10-20)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Centre Internacional de Mètodes Numèrics a l'Enginyeria
      El almacenamiento geológico profundo está ampliamente reconocido como el enfoque más óptimo para el almacenamiento seguro de residuos radiactivos. Este sistema consiste en materiales a base de bentonita colocados alrededor ...

    • Inclusion of chemical effect in a fully coupled THM finite element code 

      Abed, A. A.; Solowski, W; Romero Morales, Enrique Edgar; Gens Solé, Antonio (The Hong Kong University of Science and Technology (HKUST), 2018)
      Comunicació de congrés
      Accés obert
      Bentonite-rich clays can be used as a buffer / backfill material in deep geological repositories for nuclear waste. The prediction of the long-term performance of a buffer / backfill in such a complex environment, where ...

    • Influence of special clays as builder in ecological detergents 

      Carrión Fité, Francisco Javier (2015-01-01)
      Article
      Accés restringit per política de l'editorial
      The aim of this work is to determine the influence of certain clay micro particles added to detergent formulation to act as builders in removal of impurities (detersive power) during the washing of a standard cotton fabric ...

    • Interacción paraquat-adsorbentes 

      López Ortiz, Raquel (Universitat Politècnica de Catalunya, 2007-07-13)
      Projecte/Treball Final de Carrera
      Accés obert
      El paraquat es un herbicida muy tóxico. La intoxicación tiene lugar generalmente de forma voluntaria, no existiendo antídoto para el paraquat. La desintoxicación se lleva a cabo mediante la utilización de diferentes ...

    • Las bentonitas en los detergentes ecológicos 

      Carrión Fité, Francisco Javier (Comité Español de la Detergencia, Tensioactivos y Afines (CED), 2009-03-26)
      Comunicació de congrés
      Accés obert
      Este trabajo tuvo como objetivo principal conseguir una mejora en la suavidad del tejido de algodón en el mismo proceso lavado con tensioactivos ecológicos. Para ello, se añadió bentonita sódica al detergente, con el fin ...