Exploració per autor "Valhondo González, Cristina"Més informacióMés informació

Ara es mostren els items 1-9 de 9

    • A general and efficient numerical solution of reactive transport with multirate mass transfer 

      Wang, Jingjing; Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Valhondo González, Cristina (2022-01)
      Article
      Accés obert
      The presence of low permeability regions within porous media impacts solute transport and the distribution of species concentrations. Therefore, (bio)chemical reactions are equally affected. Multirate Mass Transfer (MRMT) ...

    • Monitoring induced denitrification during managed aquifer recharge in an infiltration pond 

      Grau Martinez, Alba; Folch Sancho, Albert; Torrentó, Clara; Valhondo González, Cristina; Barba Ferrer, Maria del Carme; Domènech Ortí, Cristina; Soler Gil, Albert; Otero, Neus (Elsevier, 2018-06)
      Article
      Accés obert
      Managed aquifer recharge (MAR) is a well-known technique for improving water quality and increasing groundwater resources. Denitrification (i.e. removal of nitrate) can be enhanced during MAR by coupling an artificial ...

    • Multirate mass transfer simulation of denitrification in a woodchip bioreactor 

      Wang, Jingjing; Carrera Ramírez, Jesús; Valhondo González, Cristina; Saaltink, Maarten Willem; Petchamé Guerrero, Jordi; Zhang, Fengshou; Herbert, Roger (Elsevier, 2023-09)
      Article
      Accés obert
      Denitrifying woodchip bioreactors (DWBs) have proven to be an efficient nature-based solution for nitrate removal. Modeling DWBs is required for improving their design and operation, but is hindered by the complexity of ...

    • On the localization of chemical reactions in multicontinuum media 

      Wang, Jingjing; Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Valhondo González, Cristina (Elsevier, 2022-09)
      Article
      Accés obert
      Reactive transport (RT) through heterogeneous media, may cause chemical heterogeneity if water flux is slow through portions of the medium. In such cases, chemical localization (i.e., the occurrence of reactions that would ...

    • Reactive barriers for renaturalization of reclaimed water during soil aquifer treatment 

      Valhondo González, Cristina; Carrera Ramírez, Jesús; Martínez Landa, Lourdes; Wang, Jingjing; Almafitano, Stefano; LEvantesi, Caterina; Díaz Cruz, Sílvia (2020-04)
      Article
      Accés obert
      Managed aquifer recharge (MAR) is known to increase available water quantity and to improve water quality. However, its implementation is hindered by the concern of polluting aquifers, which might lead to onerous treatment ...

    • Reactive transport: a review of basic concepts with emphasis on biochemical processes 

      Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Soler Sagarra, Joaquim; Wang, Jingjing; Valhondo González, Cristina (2022-02)
      Article
      Accés obert
      Reactive transport (RT) couples bio-geo-chemical reactions and transport. RT is important to understand numerous scientific questions and solve some engineering problems. RT is highly multidisciplinary, which hinders the ...

    • Six artificial recharge pilot replicates to gain insight into water quality enhancement processes 

      Valhondo González, Cristina; Martínez Landa, Lourdes; Carrera Ramírez, Jesús; Díaz Cruz, Sílvia; Amalfitano, Stefano; Levantesi, Caterina (2020-02)
      Article
      Accés obert
      The processes that control water quality improvement during artificial recharge (filtering, degradation, and adsorption) can be enhanced by adding a reactive barrier containing different types of sorption sites and promoting ...

    • Soil aquifer treatment to remove priority organic pollutants in the Llobregat river area 

      Huerta, Maria; Solé, Josep; Aceves, Mercè; Valhondo González, Cristina; Hernández, Marta; Gullón Santos, Martín (2013)
      Comunicació de congrés
      Accés obert
      The Llobregat River is the main source of water supply in this area. This river together with its aquifer has suffered from several damages which had contributed to endanger a suitable ecological and hydrological status; ...

    • Tracer test modeling for characterizing heterogeneity and local-scale residence time distribution in an artificial recharge site 

      Valhondo González, Cristina; Martínez Landa, Lourdes; Carrera Ramírez, Jesús; Hidalgo, Juan J.; Tubau Fernandez, Isabel; De Pourcq, Katrien; Grau Martinez, Alba; Ayora Ibáñez, Carlos (2016-10-18)
      Article
      Accés obert
      Artificial recharge of aquifers is a technique for improving water quality and increasing groundwater resources. Understanding the fate of a potential contaminant requires knowledge of the residence time distribution (RTD) ...