A5025136785- Phase Equilibria and Thermodynamics
- Enzyme Catalysis and Immobilization
- Petroleum Processing and Analysis
- Thermodynamic properties of mixtures
- Enhanced Oil Recovery Techniques
- Chemical Thermodynamics and Molecular Structure
- Ionic liquids properties and applications
- Electrochemical sensors and biosensors
- Hydrocarbon exploration and reservoir analysis
- biodegradable polymer synthesis and properties
- Biodiesel Production and Applications
- Spectroscopy and Chemometric Analyses
- Advanced Chemical Sensor Technologies
- Chemical and Physical Properties in Aqueous Solutions
- Agricultural and Food Sciences
- Essential Oils and Antimicrobial Activity
- Analytical Chemistry and Chromatography
- Calcium Carbonate Crystallization and Inhibition
- Catalysis and Oxidation Reactions
- Polymer Foaming and Composites
- Water Quality Monitoring and Analysis
- Phytochemicals and Antioxidant Activities
- Crystallization and Solubility Studies
- CO2 Sequestration and Geologic Interactions
- Diphtheria, Corynebacterium, and Tetanus
Universidade Tiradentes
2015-2025
Instituto de Tecnologia e Pesquisa
2016-2025
Universidade Regional Integrada do Alto Uruguai e das Missões
2004-2011
Universidade Estadual de Maringá
2006
The main objective of this work is to investigate the role two types ionic liquids, omimBF4 and omimPF6, upon microwave demulsification process. A series batch runs were carried out evaluate final emulsified water content emulsion samples after exposure microwaves at distinct liquid concentrations. Tests performed in a commercial reactor system, using high stable water-in-crude oil containing different salt contents. Similar separation tests conducted under conventional heating investigated...
The use of ionic liquids (ILs) as demulsifiers water-in-crude oil emulsions represents a new field study. main purpose this work is to investigate the effect five ILs, [C4mim]+[NTf2]−, [C8mim]+[NTf2]−, [C12mim]+[NTf2]−, [C4py]+[NTf2]−, and [C8mim]+[ [OTf]−, set operation parameters on demulsification process, including heating type (conventional microwave), IL concentration (0.74–8.9 μmol/g), alkyl chain length, cation anion efficiency. results indicated that was favored when more...
The main focus of the present work was to study influence salinity aqueous phase on interfacial properties a Brazilian crude oil/brine solutions. pendant drop technique used conduct rheological dilatational studies, and methodology for obtaining important parameters also presented. viscoelastic were evaluated through dynamic tests that accomplished up 24 h. film aging time at 40 °C compressibility investigated. results indicated values total elasticity its components, viscous elastic...
Deep eutectic solvents (DES) have been the subject of numerous studies in literature with aim replacing traditional due to their green solvents' characteristics such as low toxicity, biodegradability, and versatility. Despite advantages, it is increasingly urgent determine chemical thermophysical properties for a more accurate industrial use. This study presents experimental data on physicochemical deep containing choline different organic acids. Spectroscopy analyses confirm occurrence...
Advanced oil recovery technologies, such as low-salinity water injection (LSWI), require a detailed understanding of oil–water interfacial properties. This study investigated the effects sulfate (SO42–), carbonate (CO32–), and nitrate (NO3–) anions in presence strontium cation (Sr2+) on tension (IFT) viscoelastic properties films. The was assessed over 4 h using pendant drop tensiometry then conducted analysis after 20 solutions with different ionic strengths at 25 °C. results showed that...
Carbonate precipitation control is important in separation processes such as those involving the monoethylene glycol (MEG) regeneration process natural gas production plants reduces solubility of these salts. The use sensors that allow continuous monitoring inorganic salts aqueous solutions contributes to optimizing parameters commonly found processes. This work proposes study calcium and strontium carbonate salt H2O + MEG mixtures using near-infrared spectroscopy (NIR) a technique....
In this work are reported densities of protic and aprotic ionic liquids in a wide temperature range, at ambient pressure, thermodynamic modeling is performed through Mattedi–Tavares–Castier, the EOS based on lattice gas theory. The results quite satisfactory with deviations smaller than 0.05%. presented greater magnitudes compared to ILs, revealing significant differences between levels cohesion electrostatic contributions among liquids.
In this work, the application of microwave technology is investigated for breaking water-in-heavy crude oil emulsions focusing upon identification acidic species existing in aqueous phase recovered by demulsification process. To accomplish this, a methodology characterization based on GC/qMS (gas chromatography coupled to mass spectrometry quadrupole type) has been developed. An experimental study was conducted assess effect operating conditions, including heating mode...
Droplet size distribution (DSD) and water content (WC) are two parameters that affect the type/intensity of treatment water-in-crude oil (W/O) emulsions in production fields. Besides, crude viscosity emulsion stability strongly dependent DSD WC. Several papers have reported different techniques for evaluation these properties; however, most them were based on experiments performed at conditions temperature mainly pressure far from those found In this work, we demonstrate optical microscopy...
Caseous lymphadenitis (CLA) is a disease caused by Corynebacterium pseudotuberculosis bacteria that affects sheep and goats. The absence of serologic diagnose factor contributes for the dissemination, due to formation granuloma, treatment very expensive. Therefore, prophylaxis approach with best cost-benefit relation; however, it still lacks an effective vaccine. In this sense, work seeks apply bioinformatic tools design vaccine against CLA, using CP40 protein as standard immunodominant...