Exploració per tema "Zeolites"
Ara es mostren els items 7-26 de 36
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Estudi de la precipitació de fosfat i l’adsorció d’amoni a l’efluent de la línea de fangs
(Universitat Politècnica de Catalunya, 2016-10-03)
Treball Final de Grau
Accés obertEl nitrogen i el fòsfor són dos elements essencials per a la supervivència dels éssers vius. Actualment, el fòsfor és un recurs limitat degut a la sobreexplotació de roca fosfàtica de qualitat per a la producció de ... -
Estudi de la recuperació de fosfats d’aigües residuals amb zeolites sintètiques
(Universitat Politècnica de Catalunya, 2015-06)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorEn aquest projecte final de carrera s’estudia la recuperació de fosfats d’aigües residuals mitjançant l’adsorció en zeolites sintètiques i cendres volants de centrals tèrmiques de carbó. Es fan servir dues cendres volants ... -
Estudio de la recuperación de nutrientes de aguas residuales para la producción de fertilizantes low cost
(Universitat Politècnica de Catalunya, 2015-06)
Projecte/Treball Final de Carrera
Accés restringit per acord de confidencialitat -
Evaluation of natural zeolite for Ammonium and Phosphorus removal from tertiary treatment in urban wastewater plants
(Universitat Politècnica de Catalunya, 2014-06)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorIn the present work was evaluated the capacity of natural zeolite for ammonium and phosphorus removal and recovery from residual effluents in tertiary treatments of urban wastewater plants. Two different natural zeolites ... -
Evaluation of phosphate and ammonium removal and valorization from urban waste waters by impregnated metal hydrated oxides inorganic natural zeolites
(Universitat Politècnica de Catalunya, 2017-03-22)
Tesi
Accés obertPhosphate and ammonium removal from waste water by adsorption using inorganic natural sorbents has been identified as a promising technology. The advantages of this methodology are associated with its availability and ... -
Infuence of zeolite structure and chemistry on the electrical response and crystallization phase of poly(vinylidene fluoride)
(2012-11-21)
Article
Accés restringit per política de l'editorialZeolites with framework types LTL, LTA, FAU, and MFI were synthesized and used as fillers to prepare PVDF/zeolite composites. The obtained composites showed structural and electrical dependence on the pore system and ... -
Integration of powdered Ca-activated zeolites in a hybrid sorption-membrane ultrafiltration process for phosphate recovery
(2016-05-04)
Article
Accés obertThe feasibility of continuous phosphate recovery, by adsorption on powdered Ca-activated zeolite (PAZ), was assessed in a hybrid sorption membrane ultrafiltration (UF) system. The objective was to explore the influence of ... -
Investigation of zeolite acid sites for 2,5-dimethylfuran conversion
(Universitat Politècnica de Catalunya, 2022-07-04)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorFinding new routesfor chemical valorisation of biological feedstocksis an essential part for developing a biobased economy and reducing the use offossilfuels. This projecttailor’s new zeolite‐based catalytic materials ... -
Modification of a natural zeolite with Fe(III) for simultaneous phosphate and ammonium removal from aqueous solutions
(2016-06-01)
Article
Accés obertBACKGROUND: The incorporation of Fe(III) was performed in a natural clinoptilolite (Z-N) for simultaneous phosphate and ammonium removal. RESULTS: The existence of hydroxyl groups (congruent to Fe-OH) in the iron zeolite ... -
Nutrient recovery from wastewater by adsorption on Magnesium/Potassium-zeolites in adsorption-ultrafiltration hybrid systems
(Universitat Politècnica de Catalunya, 2016-01-12)
Treball Final de Grau
Accés obertA zeolitic material synthesized from coal fly ash (Na-Ze) was modified to magnesium (Mg-Ze) and magnesium-potassium (Mg/K-Ze) forms for being used as a sorbent material to enhance simultaneous removal of ammonium and ... -
Phosphate recovery by synthetic zeolite and fly-ash: sorption characterization and performance assessment in hybrid sorption-ultrafiltration pilot plant
(Universitat Politècnica de Catalunya, 2015-09)
Projecte/Treball Final de Carrera
Accés obertPhosphorus is a limited global resource; current studies have to be focused mainly on its recovery rather than its disposal. Thereby, the operational lifespan of this resource would be extended and in turn the phosphorus ... -
Phosphate recovery from aqueous solution by K-zeolite synthesized from fly ash for subsequent valorisation as slow release fertilizer
(Elsevier, 2020-08-20)
Article
Accés obertThe sorption of phosphate by K-zeolites synthesized from fly ash (FA) by hydrothermal conversion is investigated in this study. The aim is the synthesis of Ca bearing K-zeolites to recover phosphate from urban and industrial ... -
Phosphate recovery using calcium zeolite in ultrafiltration pilot plant
(Universitat Politècnica de Catalunya, 2015-10)
Treball Final de Grau
Accés obertOne of the most important ecological problems is the eutrophication, this process consist in the uncontrolled growing of algae and phytoplankton, which can destroy entire aquatic ecosystems. The reason of this process ... -
Powdered Ca-activated zeolite for phosphate removal from treated waste-water
(2016-01-01)
Article
Accés obertBackground: A powdered zeolitic material synthesised from fly ash (FA) (NaP1-FA) and its calcium modified form (CaP1-NA) were studied as sorbent materials for the recovery of phosphate from treated waste-water effluents. ... -
Qué són les Zeolites?
(2010-04-28)
Audiovisual
Accés obert -
Recovery of ammonia from domestic wastewater effluents as liquid fertilizers by integration of natural zeolites and hollow fibre membrane contactors
(2017-04-15)
Article
Accés obertThe integration of up-concentration processes to increase the efficiency of primary sedimentation, as a solution to achieve energy neutral wastewater treatment plants, requires further post-treatment due to the missing ... -
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 ...