A5034353386- Catalytic Processes in Materials Science
- Iron oxide chemistry and applications
- Environmental remediation with nanomaterials
- Catalysis and Hydrodesulfurization Studies
- Advanced oxidation water treatment
- Catalysis for Biomass Conversion
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Adsorption and biosorption for pollutant removal
- Graphene research and applications
- Mesoporous Materials and Catalysis
- Advanced Photocatalysis Techniques
- Catalysts for Methane Reforming
- Biodiesel Production and Applications
- Clay minerals and soil interactions
- Carbon Nanotubes in Composites
- Supercapacitor Materials and Fabrication
- Magnetic Properties and Synthesis of Ferrites
- Bauxite Residue and Utilization
- Analytical chemistry methods development
- Extraction and Separation Processes
- Minerals Flotation and Separation Techniques
- Science and Science Education
- Thermal and Kinetic Analysis
- Odor and Emission Control Technologies
Universidade Federal de Minas Gerais
2014-2024
Universidade Federal de Viçosa
2023
Weatherford College
2023
Prefeitura Municipal de Belo Horizonte
2019
Casablanca (Brazil)
2014
University of Havana
1987-1998
Universidad Autónoma de Madrid
1997
Instituto de Catálisis y Petroleoquímica
1997
University of Oxford
1993-1996
Gifu University
1992
Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization application two typical IOT, i.e., fine coarse wastes. The physicochemical these IOT by different techniques such as XRF (X-ray fluorescence), XRD diffraction), Mössbauer spectroscopy, granulometry, indicates for a composition Fe2O3/FeOOH (10-55%), SiO2 (18-65%) Al2O3 (up to 15%) with particles 6-40 μm, whereas...
Mineral extraction is of ultimate importance for the economies different countries, and Brazil one world’s leading producers iron ores. Unfortunately, dams are still main problem, mainly in Minas Gerais, especially after Fundão Dam rupture 2015. Additionally, there a massive presence buildings built on earth throughout Gerais mining region, from 18th century to today. Investigating potential ore tailings (IOT) be incorporated into traditional earthen construction techniques regions affected...
The filling of carbon nanotubes with palladium metal crystallites is described and it shown that when the nanotube samples are opened using nitric acid, surface acid groups (CO2H OH) present on both nanoparticles these interact strongly ions: ultrasound pre-treatment prior to oxidation increases number groups.
In this work, controlled reduction of red mud with H(2) was used to produce active systems for two different environmental applications, i.e. the heterogeneous Fenton reaction and Cr(VI). Mössbauer, powder X-ray diffraction, thermal analyses scanning electron microscopy showed that at temperatures, 300, 400, 500 600 degrees C, reduces phases, mainly Fe(3)O(4), Fe(0)/Fe(3)O(4) Fe(0). These Fe phases are dispersed on Al, Si Ti oxides present in show high reactivity towards Reduction 400 C best...