Ara es mostren els items 1-20 de 23

  • Adsorció de l'herbicida paraquat en alginat de calci 

    Ruiz Planas, Montserrat; Roset Calzada, María Lourdes; Barrón Zambrano, Jesús Alberto; Sastre Requena, Ana María; Pérez González, Juan Jesús (2009)
    Text en actes de congrés
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    La sostenibilitat de l’ús de l’aigua esta lligada de forma fonamental al seu ús en l’agricultura. L’activitat agrària afecta directament la qualitat de les aigües. Els residus de fertilitzants i de productes fitosanitaris, ...
  • Boron recovery from seawater with a new low-cost adsorbent material 

    Demey Cedeño, Hary; Vincent, Thierry; Ruiz Planas, Montserrat; Nogueras Cervera, Marc; Sastre Requena, Ana María; Guibal, Eric (2014-10-15)
    Article
    Accés restringit per política de l'editorial
    A new adsorbent [chiFer(III)] for boron recovery from seawater was prepared using chitosan and iron(III) hydroxide. Experiments were carried out in a column system. Seawater samples were collected from the Mediterranean ...
  • Boron reduction by supported liquid membranes using ALiCY and ALiDEC ionic liquids as carriers 

    Coll Ausió, Mª Teresa; Fortuny Sanromá, Agustín; Sastre Requena, Ana María (2014-04-01)
    Article
    Accés restringit per política de l'editorial
    The extraction of boron by liquid-liquid extraction and by supported liquid membranes (SLM) using two ionic liquids, the trioctyl/decylmethylammonium-bis(2,4,4-trimethilpentyl) phosphinate (ALiCY IL) and the trioctyl/dec ...
  • Boron removal from aqueous solutions using alginate gel beads in fixed-bed systems 

    Demey Cedeño, Hary; Ruiz Planas, Montserrat; Barrón Zambrano, Jesús Alberto; Sastre Requena, Ana María (2014-06-01)
    Article
    Accés obert
    BACKGROUNDA column sorption study was carried out using calcium alginate gel beads as adsorbent for the removal of boron from aqueous solutions. The breakthrough curve was obtained as a function of pH, initial concentration ...
  • Boron removal from seawater by supported liquid membranes 

    Coll Ausió, Mª Teresa; Fortuny Sanromá, Agustín; Leopold, Agnieszka Ana; Sastre Requena, Ana María (2009)
    Comunicació de congrés
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    Water covers 70% of the Earth’s surface but, even so water is becoming a scarce resource. In order to achieve the target 7.c of the Millennium Development Goals, to assure potable water for the people without sustainable ...
  • Chloride reduction from brackish water by supported liquid membranes using ionic liquids as carriers 

    Benito, Sergi; Fortuny Sanromá, Agustín; Coll Ausió, Mª Teresa; Sastre Requena, Ana María (2012)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The desalinization of the continental waters is one of the actual challenges on supplying water requirements. Water with high contents in salts is inadequate for drinking water and irrigation uses. In the industry this ...
  • Development of a new chitosan/Ni(OH)(2)-based sorbent for boron removal 

    Demey Cedeño, Hary; Vincent, Thierry; Ruiz Planas, Montserrat; Sastre Requena, Ana María; Guibal, Eric (2014-05-15)
    Article
    Accés restringit per política de l'editorial
    A new composite containing chitosan (as the encapsulating material) and nickel (II) hydroxide [chiNi(II)] has been manufactured for the removal of boron from aqueous solutions. The biosorbent was characterised using SEM ...
  • Effect of phase modifiers on boron removal by solvent extraction using 1,3 diolic compounds 

    Fortuny Sanromá, Agustín; Coll Ausió, Mª Teresa; Kedari, Chandrashekhar S.; Sastre Requena, Ana María (2014-06)
    Article
    Accés obert
    Abstract: BACKGROUND: Among the polyols, 1,3 diols are selective and efficient extractants for boron but significant solubility of these into aqueous solutions restricts their application in large scale separation processes. ...
  • Experimental and modelling studies of neodymium solvent extraction from chloride media with methyl-tri(octyl/decyl)ammonium oleate ionic liquid diluted in kerosene 

    Obón Estrada, Eleonora; Fortuny Sanromá, Agustín; Coll Ausió, Mª Teresa; Sastre Requena, Ana María (Elsevier, 2017-12-01)
    Article
    Accés restringit per política de l'editorial
    A study of the solvent extraction process of Nd(III) from chloride solutions has been carried out using an ionic liquid (AliOle) prepared from Aliquat 336 (Methyl-tri(octyl/decyl)ammonium chloride) and Oleic Acid. The IL ...
  • Immobilization of cyphos ionic liquids in alginate capsules for Cd(II) sorption 

    Guibal, E.; Figuerola Piñol, A.; Ruiz Planas, Montserrat; Vincent, T.; Sastre Requena, Ana María; Jouannin, C. (2010-01)
    Article
    Accés restringit per política de l'editorial
    Four phosphonium ionic liquids (Cyphos IL-101, IL-105, IL-109, and IL-111) have been immobilized in composite biopolymer capsules (alginate/gelatin). The resins were tested for Cd(II) sorption in HCl solutions. Cyphos ...
  • Iniciatives per al seguiment de la qualitat dels estudis a la UPC 

    Sastre Requena, Ana María (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2011-02-02)
    Comunicació de congrés
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  • Ionic liquids as a carrier for chloride reduction from brackish water using hollow fiber renewal liquid membrane 

    Fortuny Sanromá, Agustín; Coll Ausió, Mª Teresa; Sastre Requena, Ana María (2014-06-16)
    Article
    Accés obert
    High concentration of chloride ions in continental water is a great problem for the exploitation of these natural resources. In industry, the use of this water involves additional conditioning steps. For drinking water and ...
  • Journal of Membrane Science & Research 

    Rathore, Narendra Singh; Sastre Requena, Ana María; Pabby, Anil Kumar (2016-01)
    Article
    Accés obert
    Membrane assisted liquid extraction (MALE) technologies are gaining an important role as an extraction /separation technique for actinides and are being deployed as a promising tool for remediation of nuclear waste ...
  • Mathematical modeling of cadmium(II) solvent extraction from neutral and acidic chloride media using Cyanex 

    Leopold, Agnieszka Ana; Coll Ausió, Mª Teresa; Fortuny Sanromá, Agustín; Rathore, Narendra Singh; Sastre Requena, Ana María (Elsevier, 2010-07-29)
    Article
    Accés restringit per política de l'editorial
    This paper describes experimental work and the mathematical modeling of solvent extraction of cadmium( II) from neutral and acidic aqueous chloride media with a Cyanex 923 extractant in Exxol D-100. Solvent extraction ...
  • Mathematical modelling of neodymium, terbium and dysprosium solvent extraction from chloride media using methyl-tri(octyl/decyl)ammonium oleate ionic liquid as extractant 

    Obón Estrada, Eleonora; Fortuny Sanromá, Agustín; Coll Ausió, Mª Teresa; Sastre Requena, Ana María (Elsevier, 2017-11)
    Article
    Accés obert
    This paper collects experimental data and mathematical modelling of Nd(III), Tb(III) and Dy(III) solvent extraction with an ionic liquid prepared from Aliquat 336 (Methyl-tri(octyl/decyl)ammonium chloride) and Oleic Acid ...
  • Pseudo-emulsion based hollow fibre strip dispersion (PEHFSD) technique for permeation of Cr(VI) using Cyanex-923 as carrier 

    Sonawane, Jagannath V.; Pabby, Anil K.; Sastre Requena, Ana María (Elsevier, 2010)
    Article
    Accés restringit per política de l'editorial
    Pseudo-emulsion based hollow fibre strip dispersion (PEHFSD) technique is Investigated for the permeation–separation of chromium from hydrochloric acid media. The permeation of Cr(VI) is investigated in relation to various ...
  • Recovery of germanium from leach solutions of fly ash using solvent extraction with various extractants 

    Kamran Haghighi, Hossein; Irannajad, Mehdi; Fortuny Sanromá, Agustín; Sastre Requena, Ana María (Elsevier, 2018-01)
    Article
    Accés restringit per política de l'editorial
    The solvent extraction of germanium and some heavy metals by commercial tri-octyl/decyl amine (Alamine 336), N-methyl-N, N-dioctyl chloride (Aliquat 336) and phosphine oxide (Cyanex 923) has been studied. In each extraction ...
  • Simulation of non-linear flow density in transition state from the mathematical model of the diffusion of metal anions through a flat sheet supported liquid membrane 

    Benzal, Ma. Graciela; Kumar, Aditya; Sastre Requena, Ana María; Delshams Valdés, Amadeu (2003)
    Article
    Accés obert
    A mathematical model is developed for the carrier facilitated transport of metal ions through a flat sheet support liquid membrane (FSSLM) in transition state from Fick’s second law. From this model, and from Fick’s first ...
  • Sorption of boron calcium alginate gel beads 

    Ruiz Planas, Montserrat; Tobalina, Carlos; Demey Cedeño, Hary; Barrón Zambrano, Jesús Alberto; Sastre Requena, Ana María (2013-04)
    Article
    Accés restringit per política de l'editorial
    In this work, the removal of boron by a biopolymer of alginate was studied in an aqueous solution. The effects of pH, initial boron concentration, alginate concentration in the beads and stirring time were evaluated. The ...
  • State-of-the-art review on hollow fibre contactor technology and membrane-based extraction processes 

    Pabby, Anil K.; Sastre Requena, Ana María (2013-03)
    Article
    Accés restringit per política de l'editorial
    This review will examine the most recent research and developments in hollow fibre contactor technology and membrane-based extraction processes, including the latest improvements with regard to stability and flux. The ...