Exploració per tema "Zeolites"
Ara es mostren els items 1-20 de 36
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Caracterización de la adsorcion de amonio y fosfato mediante zeolitas sintéticas modificadas
(Universitat Politècnica de Catalunya, 2015-04)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorEn el contexto legal actual se exige una eliminación del fósforo y nitrógeno casi completa en las aguas residuales. Por otro lado, conseguir recuperar estos nutrientes conllevaría beneficios tanto económicos como ecológicos ... -
Characterization of ammonium and phosphate adsorption by synthetic zeolite
(Universitat Politècnica de Catalunya, 2015-06)
Projecte/Treball Final de Carrera
Accés obertThe excess of nitrogen and phosphorus in the wastewater has caused crucial distortion in the nature such as eutrophication of water basins, disturbed the ecological balance and spoiled the water quality. Moreover, continuing ... -
Characterization of natural Yemeni zeolites as powder sorbents for ammonium valorization from domestic waste water streams using high rate activated sludge processes
(2018-02-23)
Article
Accés obertBACKGROUND In this study three natural Yemeni zeolites (NZ1, NZ2 and NZ3) having major minerals such as clinoptilolite and mordenite, were evaluated as low cost sorbents for the removal and recovery of ammonium ... -
CO2 sorption and regeneration properties of fly ash zeolites synthesized with the use of differentiated methods
(Nature, 2020-02-04)
Article
Accés obertProduction of fly ash zeolites may be an attractive method for the utilization of solid wastes from the energy sector. Different methods of synthesis often yield a variety of zeolite types, thereby affecting the properties ... -
Construcción de un modelo para obtener oxígeno o nitrógeno mediante adsorción
(Universitat Politècnica de Catalunya, 2021-06-30)
Treball Final de Grau
Accés restringit per decisió de l'autorEl proceso de separación de gases por adsorción presenta grandes ventajas frente otras tecnologías, porque no requiere un cambio de fase, lo cual supone un incremento económico y/o volumétrico. En este proyecto, se ha ... -
Development of low-cost zeolites for cost-efficient CO2 capture
(Universitat Politècnica de Catalunya, 2022-07-04)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorCarbon capture and storage (CCS) is a very promising type of technology for the reduction of greenhouse gases (GHG) emissions to the atmosphere. The main problem with this kind of technology is the high cost of the ... -
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. ...