Exploració per tema "Zeolites"
Ara es mostren els items 23-36 de 36
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Recuperació d’amoni d’efluents de plantes depuradores d’aigües residuals mitjançant zeolites: estudi de les condicions d'operació de l'intercanvi iònic i del procés de regeneració
(Universitat Politècnica de Catalunya, 2019-07-03)
Treball Final de Grau
Accés restringit per decisió de l'autorL’amoni (NH4+) present als ecosistemes aquàtics és utilitzat per les algues per poder créixer i, per tant, si aquest es troba en excés pot suposar un greu problema d’eutrofització. Com a resultat de la gestió de les ... -
Removal of transition metals from contaminated aquifers by prb technology: Performance comparison among reactive materials
(2021-06-04)
Article
Accés obertThe most common reactive material used for the construction of a permeable reactive barrier (PRB) is zero valent iron (ZVI), however, its processing can generate corrosive effects that reduce the efficiency of the barrier. ... -
Separación y recuperación de fosfato y amonio de purines mediante sorción con zeolites sintéticas
(Universitat Politècnica de Catalunya, 2016-09-05)
Projecte Final de Màster Oficial
Accés obertLos purines de cerdo han sido tradicionalmente un problema medioambiental debido a su potencial para contaminar el suelo y las aguas cercanas. La gran concentración de granjas en zonas concretas y el hecho de que los purines ... -
Simultaneous ammonium and phosphate removal by metal inorganic salt modification of natural zeolite
(Universitat Politècnica de Catalunya, 2015-01)
Treball Final de Grau
Accés obertNutrients 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
(2015-07-01)
Article
Accés obertA 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 ... -
Simultaneous recovery of ammonium and phosphate from simulated treated wastewater effluents by activated calcium and magnesium zeolites
(2017-01-01)
Article
Accés obertBACKGROUND In this study a sodium zeolite synthesized from coal fly ash (NaP1-NA) was modified to calcium and magnesium forms (Ze-Ca, Ze-Mg) as sorbent materials for simultaneous recovery of ammonium and phosphate from ... -
Síntesis de zeolitas a partir de cenizas volantes de centrales termoeléctricas de carbón
(Universitat Politècnica de Catalunya, 2002-04-11)
Tesi
Accés obertLos sub-productos de combustión del carbón producidos en centrales térmicas, están compuestos generalmente por más de un 70% de material vítreo aluminosilicatado. Esta composición los hace potencialmente utilizables en ... -
Synthesis of zeolites from coal fly ash: an overview
(2002-05-02)
Article
Accés restringit per política de l'editorialCoal 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 ... -
Towards the wastewater treatment plant of the future : integration of carbon redirection and nitrogen recovery technologies
(Universitat Politècnica de Catalunya, 2018-12-12)
Tesi
Accés obertMost of the urban wastewater treatment plants (WWTP), based on conventional activated sludge (CAS) systems, cannot be considered sustainable since the concept of resources (energy and nutrients) recovery is not taken into ... -
Validation of zeolites to maximize ammonium and phosphate removal from anaerobic digestate by combination of zeolites in Ca and Na forms
(Universitat Politècnica de Catalunya, 2016-04)
Projecte/Treball Final de Carrera
Accés obertAmmonium 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 ... -
Valorisation of N and P from waste water by using natural reactive hybrid sorbents: Nutrients (N,P,K) release evaluation in amended soils by dynamic experiments
(Elsevier, 2018-01-15)
Article
Accés obertThe removal of nutrients (nitrogen (N), phosphorous (P)) from waste water has become a resource recovery option in recent regulations worldwide, as observed in the European Union. Although both of these nutrients could be ... -
Valorización de amonio de aguas residuales urbanas como fertilizante líquido utilizando contactores de membrana de fibra hueca
(Universitat Politècnica de Catalunya, 2016-06-23)
Treball Final de Grau
Accés obertEl concepto de Estación Depuradora de Aguas Residuales (EDAR) ha evolucionado en los últimos años hacia una instalación más eficiente y que cada vez más se encamina a un diagrama de flujo basado en la recuperación de ... -
Valorización de cenizas volantes para la síntesis de zeolitas mediante extracción de sílice y conversión directa : aplicaciones ambientales
(Universitat Politècnica de Catalunya, 2002-09-16)
Tesi
Accés obertAquest estudi es centra en la síntesi de zeolites a partir de cendres volants de carbó i les aplicacions ambientals dels materials zeolítics resultants. La síntesi de zeolites es va desenvolupar mitjançant dos processos ... -
Zeolite-coated interdigital capacitors for humidity sensing
(2011-05-06)
Article
Accés restringit per política de l'editorialInter-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 ...
