Browsing by Subject "Membranes (Tecnologia)"
Now showing items 1-20 of 125
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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 ... -
A limiting case of constant counterion electrochemical potentials in the membrane for examining ion transfer at ion-exchange membranes and patches
(2019-10-08)
Article
Open AccessIon passage through ion-exchange membranes is vital in electrodialysis desalination, batteries and fuel cells, and water splitting. Simplified models of ion transport through such membranes frequently assume complete ... -
A study on behaviour, interaction and rejection of paracetamol, diclofenac and ibuprofen (PhACs) from wastewater by nanofiltration membranes
(2020-01-23)
Article
Restricted access - publisher's policyNon-steroidal anti-inflammatory drugs are frequently reported in drinking and treated waters. Membranes can be used to inhibit the passage of micropollutants (Pharmaceuticals) into water that can be further reused. In this ... -
Aplicació de tecnologia de membranes de nanofiltració per a la recuperació de metalls d'aigües àcides d'indústries hidrometal·lúrgiques
(Universitat Politècnica de Catalunya, 2019-10-31)
Bachelor thesis
Open AccessActualment és conegut per tothom que existeix una necessitat d’aprofitar els recursos dels que disposem i als que encara es pot donar ús. Les membranes de nanofiltració (NF) són un exemple de tecnologia aplicada ... -
Application of nanofiltration for acidic waters containing rare earth elements: Influence of transition elements, acidity and membrane stability
(2018-03-15)
Article
Open Access© 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
Open AccessIn 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 ... -
Arsenic impact on the valorisation schemes of acidic mine waters of the Iberian Pyrite Belt: Integration of selective precipitation and spiral-wound nanofiltration processes
(2021-02-05)
Article
Restricted access - publisher's policyArsenic and selenium presence in acid mine waters (AMWs) limits their disposal due to environmental regulations. The focus to solve the economic infeasibility is directed to sustainable solutions, promoting resource recovery. ... -
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 -
Ca-alginate/carboxymethyl chitosan/Ni0.2Zn0.2Fe2.6O4 magnetic bionanocomposite: Synthesis, characterization and application for single adsorption of Nd+3, Tb+3, and Dy+3 rare earth elements from aqueous media
(2020-05-15)
Article
Restricted access - publisher's policyThis study aims to research the adsorption of Nd+3, Tb+3, and Dy+3 from aqueous media onto the magnetic calcium alginate/carboxymethyl chitosan/Ni0.2Zn0.2Fe2.6O4 (CA/CMC/Ni0.2Zn0.2Fe2.6O4) bionanocomposite in a single ... -
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 ... -
Comparison of acid-resistant ceramic and polymeric nanofiltration membranes for acid mine waters treatment
(2020-02-15)
Article
Restricted access - publisher's policyAcid-resistant ceramic and polymeric nanofiltration (NF) membranes have been identified as relevant materials for sustainable management of acidic streams. NF properties such as a high passage of single-charged ions and ... -
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 ...
