A5055855613- Nuclear Materials and Properties
- Radioactive element chemistry and processing
- Nuclear reactor physics and engineering
- Nuclear and radioactivity studies
- Radioactive contamination and transfer
- Edible Oils Quality and Analysis
- Graphite, nuclear technology, radiation studies
- Thermochemical Biomass Conversion Processes
- Nuclear materials and radiation effects
- Minerals Flotation and Separation Techniques
- Wastewater Treatment and Reuse
- Catalysis and Hydrodesulfurization Studies
- Metal Extraction and Bioleaching
- Membrane Separation Technologies
- Mine drainage and remediation techniques
- Fecal contamination and water quality
- Environmental Impact and Sustainability
- Recycling and Waste Management Techniques
- Carbon Dioxide Capture Technologies
- Coal and Its By-products
- Geothermal Energy Systems and Applications
- Lignin and Wood Chemistry
- Chemical and Environmental Engineering Research
- Mining and Resource Management
- Constructed Wetlands for Wastewater Treatment
Fundació CTM Centre Tecnològic
2013-2025
Universitat Politècnica de Catalunya
2000-2009
Clínica Diagonal
2006
Universitat de Barcelona
2004
Bio-oil is lacking of many quality standards required for the engine fuel. Many types catalysts have been used to upgrade bio-oil. However, they deactivated quickly or had high price. In this study, catalytic pyrolysis wastewater treatment plant sludge, pine wood, municipal waste and their mixture over synthesized zeolite (A type) from steel factory was studied. The results indicated that led slight increase bio-oil yield (46.0 46.2 wt%) improved For instance, it reduced content oxygen...
Understanding the formation of alteration phases on surface spent nuclear fuel, such as those observed during leaching experiments, is necessary in order to predict concentration radionuclides near-field a final repository. Hydrogen peroxide has been identified one oxidants formed by radiolysis water presence fuel; especially due α activity. The this species solution can contribute uranium secondary phases. In work, we have studied oxidative dissolution synthetic UO2 disks hydrogen solutions...
MSocial Life Cycle Assessment (S-LCA) uses a life cycle perspective to assess social impacts of products, and the S-LCA guidelines describe developing system boundaries based on factory-level perspective. However, such may exclude stakeholders with negative performance which are cooperating factory but not directly involved product under study, it can result in step back corporate responsibility (CSR). Our study aimed align CSR concept. Therefore, we designed case for manufacturing sector...
A prototype pilot plant testing for a novel complete treatment strategy landfill leachate aimed to decrease its environmental impact was studied. Pre-treatment of performed by means membrane bioreactor (MBR) decreasing inorganic carbon concentration 92 ± 8% and achieving N removals 85%. Suspended solids removal in the MBR >99.9% conditioned next step. Spiral-would reverse osmosis (RO) regenerated membranes were used treat effluent. This RO unit achieved global recovery 84% along with...
Herein, it is aimed to investigate the effect of zeolite catalyst on co‐pyrolysis process waste tyre and poplar wood. A laboratory‐sized reactor used pyrolyze 15 g sample at 500 °C under atmospheric pressure. In results, indicated that affects properties products. Comparing single feedstock, enhances yields bio‐oil, while reducing formation char. The pyrolysis wood produces 23.3 wt% 25 bio‐oil. However, 31.29 for process. Higher content valuable compounds are formed in which improve fuel...
The influence of both hydrogen peroxide (H2O2) and bicarbonate (HCO3-) on the dissolution UO2 has been studied in this work. Two different series experiments have carried out using a flow-through reactor. In first series, H2O2 concentration (between 10-6 5×10-4 mol dm-3) rate at fixed 2×10-3 dm-3. An increase is observed as increases. second 10-4 10-2 presence (10-4 dm-3). main result was that rates increased with concentration. From experimental data, an oxidative model developed can...
This work presents experimental data and modelling of the release Mo from high-burnup spent nuclear fuel (63 MWd/kgU) at two different pH values, 8.4 13.2 in air. The SF to solution is around orders magnitude higher = than 8.4. high would indicate that not be congruently released with uranium have an important contribution Instant Release Fraction, a value 5.3%. Parallel experiments pure non irradiated Mo(s) XPS determinations indicated faster dissolution could consequence releases metallic...
Summary In this work we studied the effect of external β radiation ( 90 Sr- Y source with an activity 7 mCi) on dissolution rate non-irradiated UO 2 as a chemical analogue spent nuclear fuel (SF). The experiments were carried out at three different pH values inside glove-box in nitrogen atmosphere to avoid oxygen contamination. MAKSIMA code was used model generation radiolytic products, both molecular species and radicals. formation hydrogen peroxide solution observed experiments, predicted...
The dissolution behaviour of powdered commercial spent fuel (UO2 with burn-up 53 MW/d kg U) has been studied in a carbonate-containing solution ([HCO3-] =0.001 mol dm-3) by using flow-through reactor specially designed for the use hot cell. This method allows studying while avoiding parallel process secondary solid phase formation. U, Np, Pu, Sr and Cs was studied. main trend results obtained this work is that only neptunium releases congruently uranium (FIAPNp/FIAPU=1.21±0.01) because both...