Browsing by Subject "Membranes (Tecnologia)"
Now showing items 1-20 of 102
-
A comparative study of the selective transport of Zn/Cd and Pt/Pd couples with activated composite membranes and hybrid membranes
(2009-05-15)
Article
Restricted access - publisher's policySupported liquid membranes (SLMs) have demonstrated all along the years every high selectivity in facilitated transport of metal ions, however, they have some well known limitations, such as the gradual loss of the organic ... -
Application of nanofiltration for acidic waters containing rare earth elements: Influence of transition elements, acidity and membrane stability
(2018-03-15)
Article
Restricted access - publisher's policy© 2017 Elsevier B.V. Acid mine drainage (AMD) is considered the main environmental problem in mining operation due to its acidity, metal content (Fe, Al, Zn, Cu) and onerous associated treatment cost. However, the presence ... -
Application of PVDF ultrafiltration membranes to treat and reuse textile wastewater
(2016)
Article
Open AccessIn this work, the feasibility of polyvinylidene difluoride ultrafiltration membranes to treat textile wastewater was studied. The C.I. Disperse Orange 30 and C.I. Disperse Rubine 73 were selected as pollutant for the ... -
Application of selectrodialysis for the removal of as from metallurgical process waters: Recovery of Cu and Zn
(2017-12-19)
Article
Restricted access - publisher's policyIn this work, selectrodialysis (SED) was used to separate arsenic (As(V)) from copper (Cu(II)) and (Zn(II)) of acidic metallurgical process streams by integrating non-selective and selective membranes. The separation process ... -
Asymmetric electroosmotic pumping across porous media sandwiched with perforated ion-exchange membranes
(2017-07-01)
Article
Open AccessTo have non-zero net flow in AC electroosmotic pumps, the electroosmosis (EO) has to be non-linear and asymmetric. This can be achieved due to ionic concentration polarization. This is known to occur close to micro-/nano ... -
Atomic force microscopy as a suitable technique for surface characterization of activated composite membranes for metal ion facilitated transport
(2006)
Article
Restricted access - publisher's policyActivated composite membranes (ACM) have been made based on a polysulfone layer over a non-woven support with a dense layer of aromatic polyamide, and deposited on the polysulfone using interfacial polymerisation by a ... -
Avaluació del transport d’espècies iòniques en membranes de nanofiltració mitjançant membrana plana i espiral
(Universitat Politècnica de Catalunya, 2013-11)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEn el present projecte es realitza l’avaluació del transport de les espècies iòniques en membranes de nanofiltració (NF) mitjançant una membrana plana i una membrana en espiral. La finalitat és estudiar l’efecte de la ... -
Bending test of an inflatable structure. Client BuildAir
(2012-05)
External research report
Restricted access - confidentiality agreement -
Caracterización de los procesos de modificación de membranas poliméricas de poliamida en procesos de tratamiento de agua
(Universitat Politècnica de Catalunya, 2013-11)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEn el presente proyecto se estudian los procesos de modificación de membranas poliméricas de poliamida de ósmosis inversa que tienen lugar en plantas de tratamiento de agua, en concreto en plantas potabilizadoras. La ... -
Caracterización del transporte de especies iónicas en procesos de Nanofiltración
(Universitat Politècnica de Catalunya, 2013-07)
Bachelor thesis
Open AccessEn este proyecto se estudia la caracterización del transporte de especies iónicas en procesos de nanofiltración. Primeramente se realiza un estudio de los procesos de membranas, principalmente de los procesos que envuelven ... -
Caracterización electroquímica fisicoquímica de un nanomaterial híbrido Nafion/Ag-NPs
(2014)
Conference lecture
Restricted access - publisher's policyLa particular estructura química de la matriz perfluorosulfónica del Nafion, con dominios hidrofílicos e hidrofóbicos segregados formando canales nanoscópicos, ha dado pie a su uso como modelo de estructura para la fabricación ... -
Cleaning optimisation of reverse osmosis membranes used for wastewater reclamation
(2012)
Article
Open AccessWastewater reclamation contributes to the preservation of conventional water resources and thus helps to ensure appropriate human development for future generations. Wastewater reclamation can be achieved through several ... -
Comparativa técnica, energética y económica de tres operaciones de concentración en la industria alimentaria: La evaporación, la tecnologia de membranas y la crioconcentración
(Universitat Politècnica de Catalunya, 2011-07-14)
Master thesis
Open AccessLa industria alimentaria se encuentra ante la necesidad de concentrar alimentos líquidos y para ello aplica sistemas tecnológicos que permiten eliminar parte del agua. En la práctica también representa un procedimiento ... -
Composition and reversibility of fouling on low-pressure membranes in the filtration of coagulated water: insights into organic fractions behaviour
(2016-11-01)
Article
Open AccessThe primary problem for the application of microfiltration (MF) and ultrafiltration (UF) membrane technology is membrane fouling. Such is the case that understanding membrane fouling has become one of the major factors ... -
Desarrollo y caracterización de membranas poliméricas microporosas
(Universitat Politècnica de Catalunya, 2015-01)
Master thesis
Open AccessDentro del abanico de técnicas de producción de membranas poliméricas, se encuentra aquella que se basa en una de las técnicas generales de procesado de materiales poliméricos termoplásticos con mayor implantación en el ... -
Design of environmental monitoring systems pH sensing
(Universitat Politècnica de Catalunya / University of Alberta, 2013)
Bachelor thesis
Open Access
Covenantee: University of AlbertaThis document explains the design process and methods of a pH sensor and data logger. It shows how taking advantage of the unique spectral properties of a polymeric membrane, a circuit can be conceived to measure the ... -
Development and characterization of hybrid membranes based on an organic matrix modified with silanes for metal separation
(2007-02-15)
Article
Restricted access - publisher's policyNew hybrid membranes for metal ion transport were synthesized with the aim of improving mechanical and chemical stabilities, mean lifetime and loss of carrier. Hybrid organic–inorganic materials present several advantages ... -
Development of polymeric hollow fiber membranes containing catalytic metal nanoparticles
(2010-10-31)
Article
Open AccessMetal nanoparticles (MNPs) have unique physico-chemical properties advantageous for catalytic applications which differ from bulk material. However, the main drawback of MNPs is their insufficient stability due to a high ... -
Effect of micro-coagulation by FeCl3 in organic fouling in ultrafiltration membranes: Study using fluorescence emission-excitation techniques and application water treatment plant of Sant Joan Despí
(Universitat Politècnica de Catalunya, 2015-06)
Bachelor thesis
Open AccessCoagulation is an essential treatment step in many drinking water treatment plants (DWTP) to remove small particles and certain dissolved natural organic matter (NOM) from water. The coagulation process typically includes ... -
Electrospun PLLA membranes for caffeine delivery: diffusional approach
(Springer, 2017-12-29)
Article
Open AccessOne of the great advantages of electrospun fibers is the large tridimensional area produced, capable of storing any type of material. The aim of our investigation is to study the electrospinning technique to produce polymer ...
