A5070231158- Radioactive element chemistry and processing
- Atmospheric and Environmental Gas Dynamics
- Radioactive contamination and transfer
- Analytical chemistry methods development
- Membrane Separation Technologies
- Solar-Powered Water Purification Methods
- Coal and Its By-products
- Mine drainage and remediation techniques
- Geochemistry and Geologic Mapping
- Lanthanide and Transition Metal Complexes
- Minerals Flotation and Separation Techniques
- CO2 Sequestration and Geologic Interactions
- Nuclear Materials and Properties
- Pharmaceutical and Antibiotic Environmental Impacts
- Membrane-based Ion Separation Techniques
- Catalysis and Hydrodesulfurization Studies
- Carbon Dioxide Capture Technologies
- Biosensors and Analytical Detection
- Extraction and Separation Processes
- Solar Thermal and Photovoltaic Systems
- Nuclear materials and radiation effects
- Thermochemical Biomass Conversion Processes
- Radioactivity and Radon Measurements
- Electrokinetic Soil Remediation Techniques
- Metal Extraction and Bioleaching
Fundació CTM Centre Tecnològic
2011-2024
Centre Tecnologic de Telecomunicacions de Catalunya
2021
Universitat Politècnica de Catalunya
2008
Universitat de Barcelona
2007
The near zero liquid discharge (NZLD) approach, by recovering water and dissolved valuable salts, is the most attractive clean solution for valorisation of brines from seawater desalination reverse osmosis (SWD-RO) plants. In this perspective, a key aspect calcium removal/recovery, to avoid scaling problems in successive advanced separation units other salts. work sodium citrate (Na3C6H5O7), carbonate (Na2CO3) hydrogencarbonate (NaHCO3) were tested as precipitation reagents. Different pH,...
The formation of uranyl-peroxide complexes was studied at alkaline media by using UV-Visible spectrophotometry and the STAR code. Two different were found a H2O2/U(VI) ratio lower than 2. A graphical method used in order to obtain constants such program refine values because its capacity treat multiwavelength absorbance data refining equilibrium constants. obtained for two identified were: UO22+ + H2O2 4OH− ⇆ UO2(O2)(OH)22− 2H2O: log β°1,1,4 = 28.1 ± 0.1 (1)UO22+ 2H2O2 6OH− UO2(O2)2(OH)24−...
TRLFS has been used to study the U VI O 2 2+ -PO 4 3- system, in 1 5 pH range, for [PO ] = × 10 -3 1.02 -1 M range and [UO 1.2 -5 M. The data acquisition procedure was based on four different sets of parameters, which were chosen order maximize fluorescence signal time domains. fitting simulate corresponding decays curves crosscheck results inter-comparison between solutions concentrations. Five lifetimes τ evidenced associated with five uranyl species (UO (H PO ) , UO H + HPO - ). results,...
Abstract The dissolution of non irradiated UO 2 was studied in the presence hydrogen peroxide (10 −4 mol dm −3 ) at alkaline pH (11, 11.5, 12, and 13). Both uranium concentration solution were determined as a function time. H O consumption modelled considering pseudo first order reaction, rate constants obtained 0.126±0.004 h −1 , 0.126±0.003 0.078±0.002 0.056±0.002 11, 13, respectively. concentrations measured end experiments close to solubility sodium uranate (Na U 7 ). X-ray photoelectron...