Ara es mostren els items 13-18 de 18

  • Qué són les Zeolites? 

    Serrano, Daniel (2010-04-28)
    Accés obert
  • Simultaneous ammonium and phosphate removal by metal inorganic salt modification of natural zeolite 

    Ventosa i Capell, Blanca (Universitat Politècnica de Catalunya, 2015-01)
    Treball Final de Grau
    Accés obert
    Nutrients discharge into receiving waters can cause an environmental problem capable of deathly altering ecosystems. Natural zeolites are low cost resources with ion exchange capacity that have been widely studied. This ...
  • Simultaneous phosphate and ammonium removal from aqueous solution by a hydrated aluminum oxide modified natural zeolite 

    Guaya, Diana; Valderrama Angel, César Alberto; Farran Marsà, Adriana; Armijos, Chabaco; Cortina Pallás, José Luís (2015-07-01)
    Accés restringit per política de l'editorial
    A natural zeolite (Z-N), rich in clinoptilolite, was modified (Z-Al) by incorporation of hydrated aluminium oxide (HAlO) for the simultaneous phosphate and ammonium removal. The incorporation of surface hydroxyl groups ...
  • Synthesis of zeolites from coal fly ash: an overview 

    Querol, Xavier; Moreno, N.; Umaña, J.C.; Alastuey, A.; Hernández Chiva, Emilio; López-Soler, A.; Plana, F. (2002-05-02)
    Accés restringit per política de l'editorial
    Coal combustion by-products production in USA and EU is estimated in around 115 million tons per year. A large portion of this production is accounted for the coal fly ash (CFA). Cement and concrete manufacturing consumes ...
  • Validation of zeolites to maximize ammonium and phosphate removal from anaerobic digestate by combination of zeolites in Ca and Na forms 

    Bonaccio, Maria (Universitat Politècnica de Catalunya, 2016-04)
    Projecte/Treball Final de Carrera
    Accés obert
    Ammonium and phosphate are fundamental nutrients for human life, but their excess in water can lead to eutrophication, an uncontrolled growth of biomass with a consequent deficit of oxygen (hypoxia) that can be really ...
  • Zeolite-coated interdigital capacitors for humidity sensing 

    Urbiztondo, M.; Pellejero, I.; Rodríguez Martínez, Ángel; Pina Iritia, María Pilar; Santamaría Ramiro, Jesús Marcos (2011-05-06)
    Accés restringit per política de l'editorial
    Inter-digital capacitors (IDCs) with electrode gaps of 10 or 50 microns have been coated with zeolite films consisting of different zeolites with Si/Al ratios ranging from 1.5 (zeolite A) to infinite (silicalite). The ...