Browsing by Author "Pavón Regaña, Sandra"
Now showing items 1-13 of 13
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Comparison of Cyanex 272 and Cyanex 572 for the separation of Neodymium froma Nd/Tb/Dy mixture by pertraction
(2017-09-29)
Article
Open AccessRecovering Nd(III) from wastemagnets is an alternative method to satisfy the increasing demand for this metal. For this reason, the separation of Nd from a mixture containing Nd/Tb/Dy in chloride media using Cyanex 272 and ... -
Estudi de la capacitat d’adsorció de seleni sobre siderita (FeCO3)
(Universitat Politècnica de Catalunya, 2014-09)
Master thesis (pre-Bologna period)
Open AccessEn els darrers anys ha augmentat la preocupació sobre els productes de fissió, entre ells l’isòtop 79 del seleni, ja que són molt tòxics i mòbils i això fa que puguin arribar fàcilment a la biosfera. Per tant, per evitar ... -
Improved rare earth elements recovery from fluorescent lamp wastes applying supported liquid membranes to the leaching solutions
(2019-10-01)
Article
Open AccessDue to the continuously growing demand of rare earths in advanced technologies, end-of-life fluorescent lamps may become feasible rare earth elements (REEs) raw materials, reducing thus their supply risk. Considering acid ... -
Neodymium recovery from NdFeB magnet wastes using Primene 81R·Cyanex 572 IL by solvent extraction
(2018-09-15)
Article
Open AccessThe necessity of Rare Earth Elements (REEs) recycling is crucial to minimizing their supply risk and provide an alternative to greener technologies. Hence, the REEs recovery from NdFeB magnet wastes using cationic extractants ... -
Neodymium recovery from the aqueous phase using a residual material from saccharified banana-rachis/polyethylene-glycol
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-03-27)
Article
Open AccessNeodymium (Nd) is a key rare earth element (REE) needed for the future of incoming technologies including road transport and power generation. Hereby, a sustainable adsorbent material for recovering Nd from the aqueous ... -
Permeability dependencies on the carrier concentration and membrane viscosity for Y(III) and Eu(III) transport by using liquid membranes
(2020-05-15)
Article
Open AccessThe recovery of Y(III) and Eu(III) from fluorescent lamp leachates via supported liquid membranes using Cyanex 923 as a carrier has been studied. The results reveal that the transport process is mainly controlled by the ... -
Rare earth elements recovery from E-wastes by solvent extraction and supported liquid membrane processes
(Universitat Politècnica de Catalunya, 2019-11-28)
Doctoral thesis
Open AccessNowadays, rare earth elements (REEs) have gained importance due to their indispensable and critical use in many high-tech industries like hybrid cars, fluorescent lamps, flat screen televisions, mobile phones, disc drives ... -
Rare earth elements recovery from secondary wastes by solid-state chlorination and selective organic leaching
(2021-03-01)
Article
Open AccessProcessing of end-of-life products (EoL) containing rare earth elements (REE) has gained increasing importance in recent years with the aim of avoiding supply risks. In addition, circular economy renders complete recirculation ... -
Rare earths separation from fluorescent lamp wastes using ionic liquids as extractant agents
(2018-10-19)
Article
Open AccessProcessing of end-of-life products has become essential in the rare earth elements (REEs) recovery field because the demand for these metals has increased over the last years due to their intensive use in advanced technologies. ... -
Recycling of rare earths from fluorescent lamp waste by the integration of solid-state chlorination, leaching and solvent extraction processes
(2021-10-01)
Article
Restricted access - publisher's policyRare earths (RE) are currently considered some of the most critical elements, being crucial in future sustainable applications. Their high demand, price fluctuations, supply risk and geopolitical factors increase the ... -
Se(IV) immobilization onto natural siderite: implications for high-level nuclear waste repositories
(2021-07-01)
Article
Open AccessSorption processes of metals and semimetals on siderite are studied because of its potential adequacy for removing contaminants from natural waters and its wide availability, as well as its capacity to reduce the oxidation ... -
Solvent extraction modeling of Ce/Eu/Y from chloride media using D2EHPA
(2019-05-03)
Article
Open AccessEnd-of-life fluorescent lamps are becoming essential in the rare earths (REEs) field and suppose a feasible secondary source for getting them, reducing thus their supply risk. Considering the proved viability of the cationic ... -
Valorization of cocoa's mucilage waste to ethanol and subsequent direct catalytic conversion into ethylene
(2022-01-01)
Article
Open AccessBACKGROUND: The identification of new resources for producing biofuels and chemical-based products is crucial for processes sustainability. This study presents a valorization route to produce ethanol and ethylene using ...
