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Continuous elimination of Pb<sup>2+</sup>, Cu<sup>2+</sup>, Zn<sup>2+</sup>, H<sup>+</sup> and NH<inf>4</inf><sup>+</sup> from acidic waters by ionic exchange on natural zeolites
ArticleAbstract: A study of breakthrough curves for cations usually found in acid mine drainage (Pb2+, Cu2+, Zn2+ andPalabras claves:Acid mine drainage, Breakthrough curves, Natural zeolites, wastewaterAutores:Alcantara R., Calvo B., Canoira L., Elsen J., Fernando Morante-Carballo, García-González J.E., Martínez-Bedia J.M., Vinagre C.Fuentes:scopusEffect of calcium hydroxide and water to solid ratio on compressive strength of mordenite-based geopolymer and the evaluation of its thermal transmission property
Conference ObjectAbstract: Mordenite-rich tuff is one of most available zeolitic rocks all over the world. Because of this, thePalabras claves:compressive strength, Geopolymers, Thermal Transmission PropertyAutores:Bolivar Togra, Cecilia A. Paredes, Elsen J., Guillermo Soriano, Haci Baykara, Mauricio Heriberto CornejoFuentes:scopusHydration and strength evolution of air-cured zeolite-rich tuffs and siltstone blended cement pastes at low water-to-binder ratio
ArticleAbstract: This contribution is the second part of an in-depth study on the hydration and strength evolution ofPalabras claves:Air curing, Natural zeolites, Pozzolanic reaction, Quantitative X-ray diffractionAutores:Cecilia A. Paredes, Elsen J., Haci Baykara, Mauricio Heriberto CornejoFuentes:googlescopusHydration process of zeolite-rich tuffs and siltstone-blended cement pastes at low W/B ratio, under wet curing condition
ArticleAbstract: An extensive study in blended cement pastes that comprised two different experimental settings was cPalabras claves:Pozzolanic reactionAutores:Cecilia A. Paredes, Elsen J., Haci Baykara, Mauricio Heriberto CornejoFuentes:googlescopusZeolite mineralogy of the Cayo formation in Guayaquil, Ecuador
ArticleAbstract: This work shows the presence of zeolites in the Cretaceous Cayo formation in Coastal Ecuador. In thePalabras claves:Clinoptilolite, GUAYAQUIL, Heulandite, Laumontite, natural zeoliteAutores:Calvo B., Canoira L., Cecilia A. Paredes, Elsen J., Fernando Morante-Carballo, Machiels L., Snellings R.Fuentes:googlescopusZeolite occurrence and genesis in the Late-Cretaceous Cayo arc of Coastal Ecuador: Evidence for zeolite formation in cooling marine pyroclastic flow deposits
ArticleAbstract: This paper describes the quantitative mineralogy, the mineral chemistry and the distribution of natuPalabras claves:Cayo Formation, ECUADOR, Geoautoclave, Hydrothermal alteration, natural zeolite, Pyroclastic flow depositsAutores:Cecilia A. Paredes, Daniel Garcés-León, Elsen J., Fernando Morante-Carballo, Machiels L., Snellings R., Vilema W.Fuentes:googlescopusPreparation, characterization and reaction kinetics of green cement: Ecuadorian natural mordenite-based geopolymers
ArticleAbstract: This study was carried out to develop geopolymers derived from mordenite-rich tuffs. First the synthPalabras claves:compressive strength, Geopolymers, Mordenite, Reaction kineticsAutores:Andrea Gavilanes, Cecilia A. Paredes, Elsen J., Haci Baykara, Mauricio Heriberto Cornejo, Roberto MurilloFuentes:scopusPotential of inorganic polymers (geopolymers) made of halloysite and volcanic glass for the immobilisation of tailings from gold extraction in Ecuador
ArticleAbstract: In the present study, inorganic polymers (geopolymers) were synthesised using volcanic glass, calcinPalabras claves:ECUADOR, geopolymer, Halloysite, Heavy metal leaching, Inorganic polymer, Mine tailings, Tailing pastes, Volcanic glassAutores:Adriaens R., Barrie E., Cappuyns V., Cecilia A. Paredes, Daniel Garcés-León, Elsen J., Hollanders S., Machiels L., Pontikes Y., Vassilieva E.Fuentes:googlescopusThermomechanical treatment of two Ecuadorian zeolite-rich tuffs and their potential usage as supplementary cementitious materials
ArticleAbstract: Two Ecuadorian zeolite-rich tuffs, coded as Zeo1 (Mordenite) and Zeo2 (Clinoptilolite-Heulandite-MorPalabras claves:Hydration process, Natural zeolites, Pozzolanic reaction, Thermomechanical treatmentAutores:Cecilia A. Paredes, Elsen J., Haci Baykara, Mauricio Heriberto CornejoFuentes:scopus