Browsing by Subject "Ions"
Now showing items 1-20 of 20
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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 potential lignocellulosic biomass based on banana waste for critical rare earths recovery from aqueous solutions
(2020-04-29)
Article
Open AccessRare earth elements (REE) present multiple applications in technological devices but also drawbacks (scarcity and water contaminant). The current study aims to valorise the banana wastes - banana rachis (BR), banana ... -
Computational analysis of ion cyclotron resonance frequency heating for DEMO
(Universitat Politècnica de Catalunya, 2015-06)
Master thesis
Open AccessIon cyclotron resonance frequency heating (ICRH) is one of the most important mechanisms to heat fusion plasma. The magnetic field generated by the magnetic coils forces ions to follow a cyclotron trajectory around the ... -
Degradation of Monochloroacetic acid by aluminium modified Fenton process
(Universitat Politècnica de Catalunya, 2017-06)
Master thesis
Open AccessThis study investigates the degradation of monochloroacetic acid (MCA) by aluminium modified Fenton Process. Fenton reaction and its modifications using zero-‐valent aluminium (ZVAl) and Al3+ io ... -
Effect of inclusion of pitch-angle dependence on a simplified model of RF deposition in tokamak plasma
(IOP Publishing, 2022-04)
Article
Open AccessUsing the PION ICRH modelling code and comparisons against JET tokamak experiments, the effect of including pitch angle dependence within the RF diffusion operator on the fast ion particle distribution functions is quantified. ... -
Effects of concentration on structure, dielectric, and dynamic properties of aqueous NaCl solutions using a polarizable model
(American Institute of Physics (AIP), 2010-06-03)
Article
Restricted access - publisher's policyThe study of NaCl solutions in water at finite concentration, explicitly including polarization in water molecules and ions, has been carried out by molecular dynamics simulations. A comparison of the RPOL polarizable model ... -
Experimental tools for quantum networking operations with single photons and sinlge ions
(Universitat Politècnica de Catalunya, 2014-01-29)
Doctoral thesis
Open AccessOne promising approach for future quantum networks is the combination of strings of trapped ions as quantum-information processors with entangled photon pairs produced by spontaneous parametric down conversion (SPDC) to ... -
Heating bulk ions in DEMO with ICRF waves
(Barcelona Supercomputing Center, 2015-05-05)
Conference report
Open AccessIon cyclotron resonance frequency heating (ICRF) is one of the auxiliary heating schemes presently envisaged for ITER and DEMO. In this paper we analyse the potential of ICRF waves to heat the fuel ions in DEMO. Our ... -
On the structure of water and chloride ion interactions with a peptide backbone in solution
(2013-12-28)
Article
Restricted access - publisher's policyThe arrangement of water and chloride ions around a model peptide (glycyl-L-prolyl-glycine-NH2) was investigated using Molecular Dynamics (MD) simulations and complementary Empirical Potential Structure Refinement (EPSR) ... -
Puesta en marcha de una planta piloto para el tratamiento de aguas del acuífero de Sant Adrià del Besòs
(Universitat Politècnica de Catalunya, 2020-10-21)
Master thesis
Open AccessA Sant Adrià del Besòs hi ha un excés d’aigües freàtiques que son bombejades per evitar inundacions en soterranis i son abocades al clavegueram. Aquestes aigües no es poden utilitzar degut a l’alta càrrega de contaminant ... -
Recovery of lithium carbonate from dilute Li-Rich brine via homogenous and heterogeneous precipitation
(American Chemical Society (ACS), 2022-08-30)
Article
Open AccessAn extensive experimental campaign on Li recovery from relatively dilute LiCl solutions (i.e., Li+ ~ 4000 ppm) is presented to identify the best operating conditions for a Li2CO3 crystallization unit. Lithium is currently ... -
Recuperació de la cel·lulosa provinent de teixits polièster/cotó a partir de la utilització de líquids iònics
(Universitat Politècnica de Catalunya, 2022-06-02)
Bachelor thesis
Restricted access - author's decisionEl consum de tèxtil per habitant creix de manera exponencial, de manera que, el desenvolupament de nous processos sobre la gestió i els tractaments de residus tèxtils resulta una oportunitat clau per aconseguir models ... -
Role of oxygen vacancy ordering and channel formation in tuning intercalation pseudocapacitance in Mo single-ion-implanted CeO2–x nanoflakes
(2021-12-22)
Article
Open AccessMetal oxide pseudocapacitors are limited by low electrical and ionic conductivities. The present work integrates defect engineering and architectural design to exhibit, for the first time, intercalation pseudocapacitance ... -
Síntesis de microesferas cargadas con nanopartículas dopadas con iones para la estimulación de la regeneración ósea
(Universitat Politècnica de Catalunya, 2021-01-28)
Bachelor thesis
Restricted access - confidentiality agreement -
Solvation dynamics and ion transport in conventional solvents and plasticizers
(Universitat Politècnica de Catalunya, 2005-10-24)
Doctoral thesis
Open AccessEl argumento fundamental de esta tesis es el estudio de la solvatación iónica por medio de cálculos con ordenador. Tres lineas de investigación han sido seguidas:<br/>(i) Solvatación y mobilidad ionica. Las características ... -
Specific ion binding at phospholipid membrane surfaces
(2015-08-18)
Article
Open AccessMetal cations are ubiquitous components in biological environments and play an important role in regulating cellular functions and membrane properties. By applying metadynamics simulations, we have performed systematic ... -
Specific ion effects in aqueous eletrolyte solutions confined within graphene sheets at the nanometric scale
(2012-08-14)
Article
Restricted access - publisher's policyThe underlying mechanisms of specific ion effects on structure and dynamics of aqueous solutions have been long debated. On the other hand, the role of polarization at hydrophobic interfaces when aqueous electrolytes are ... -
Towards cavity enhanced detection of single ions in the solid-state
(Universitat Politècnica de Catalunya, 2018-09-06)
Master thesis
Open AccessThe goal of this master thesis was to take initial steps towards cavity-enhanced detection of single rare-earth ions in the solid state. A fibre microcavity set-up for use with Praseodymium-doped nanocrystals was designed, ... -
Transient membrane potential after concentration step: A new method for advanced characterization of ion-exchange membranes
(2019-09-01)
Article
Open AccessA better understanding of ion-transport mechanisms requires separate information on the equilibrium (partitioning) and kinetic (diffusivity) properties of the membranes with respect to ions. This work presents a novel ... -
Transport of Metallic Ions through Polyaniline-containing composite membranes
(2010-09-30)
Article
Open AccessThe extraction of Na+, Ni2+, and Cr3+ using six different membranes made of polyaniline composited with high-impact polystyrene, which differ in the doping agent and/or the preparation method, has been investigated. The ...
