A5066634901- Biodiesel Production and Applications
- Ionic liquids properties and applications
- Thermodynamic properties of mixtures
- Phase Equilibria and Thermodynamics
- Process Optimization and Integration
- Chemical and Physical Properties in Aqueous Solutions
- Advanced Combustion Engine Technologies
- Microbial Metabolic Engineering and Bioproduction
- Biofuel production and bioconversion
- Analytical Chemistry and Chromatography
- Algal biology and biofuel production
- Thermal and Kinetic Analysis
- Enzyme Catalysis and Immobilization
- Agricultural and Food Sciences
- Catalysis and Oxidation Reactions
- Microplastics and Plastic Pollution
- Heat transfer and supercritical fluids
- Recycling and Waste Management Techniques
- Microbial Metabolites in Food Biotechnology
- Chemistry and Chemical Engineering
- Lubricants and Their Additives
- Crystallization and Solubility Studies
- Thermochemical Biomass Conversion Processes
- Catalysis for Biomass Conversion
- Enzyme Production and Characterization
Universidade Federal do Ceará
2016-2025
Universidade Estadual de Campinas (UNICAMP)
2007-2009
The objective of this new paper was to evaluate the enzymatic esterification reaction conducted in supercritical or near-critical CO2, catalyzed by immobilized lipase B from Candida antarctica (CALB). biocatalyst prepared through immobilization CALB covalent attachment using chitosan sequentially activated with Glycidol, ethylenediamine (EDA) and glutaraldehyde as support. In order determine best operational conditions (1: 1 (alcohol-acid); content, 10% (by substrate mass); 45 °C), an...
Density ρ and viscosity η were measured for binary mixtures of cotton seed + babassu soybean biodiesel over the composition range at several temperatures (293.15, 313.15, 333.15, 353.15, 373.15) K atmospheric pressure. The deviation (Δη) was determined fitted by a Redlich−Kister type function in terms mass fraction (w). Joback's method combined with Lee−Kesler Rackett equations used to calculate densities biodiesel. experimental estimated density values gave almost identical relative...
Biodiesel has many advantages because it is a biodegradable, nontoxic fuel and its production results in less particulate matter. For this reason been studied fields of science as substitute for mineral fuels. Short chain alcohols such ethanol have used extraction soybean sunflower biodiesel the literature. The present paper reports liquid–liquid equilibrium data systems containing + glycerol at (293.15 323.15) K (298.15 313.15) K. Binodal curves were obtained by cloud-point method, while...
This paper presents the values of viscosity (η) and density (ρ) binary blends sunflower biodiesel + diesel fish oil over entire range proportion at several temperatures. Temperatures (293.15, 313.15, 333.15, 353.15, 373.15) K atmospheric pressure were studied. Excess volumes (VE) deviations viscosities (Δη) have been calculated from experimental data. These thermodynamic properties are essential in understanding intermolecular interactions between different molecules biodiesel, it is...
Ionic liquids are potential solvents for liquid extraction processes; thermodynamic modeling of liquid–liquid equilibrium (LLE) data is essential the optimization and operation these processes. Therefore, ternary LLE in systems involving ionic have been investigated by several years. In most cases, has made using NRTL model; some UNIQUAC model also used. The structural parameters determined either empirical correlations or, more recently, through quantum mechanics calculation. This work a...
Sulfolane, alcohols, and glycols are commonly used as solvents in different industrial recovery processes. The focus of the present work is to measure volumetric (densities, ρ) transport (dynamic viscosity, η) properties binary mixtures sulfolane + 2-butanol (or 2-propanol, diethylene glycol, or triethylene glycol) within a temperature range from T = 303.15 K 343.15 K, at atmospheric pressure. Densities viscosities were measured using viscodensimeter (Anton Paar SVM 3000 Digital Oscillation...
Liquid–liquid equilibria (LLE) data play an important role in the project and design of separation processes. The aim this work was to study LLE solubility (binodal) curves tie-lines for glycerol (1) + ethanol (2) coconut biodiesel (3) system at two different temperatures [(293.15 323.15) K], atmospheric pressure. From experimental data, it could be observed that relative mutual is higher phase than phase. A consistency analysis has been performed by using Othmer–Tobias correlation....
This work presents density (ρ) and dynamic viscosity (η) data correlations for binary systems containing (linseed or corn) oil, biodiesel petroleum diesel at T = 293.15 K to 333.15 in steps of 10 the linseed system 373.15 20 corn atmospheric pressure. Density were adjusted by a proposed function showing second-order behavior with mole fraction (x) linear temperature. Viscosity an equation temperature (T) mass (w) as independent variables exponential dependence inverse proportional fraction....
Densities, ρ, of binary mixtures diesel + soybean biodiesel and n-hexadecane have been measured as a function the composition at different temperatures (293.15, 313.15, 333.15, 353.15, 373.15) K atmospheric pressure, over entire range, using an Anton Paar SVM 3000 oscillating U-tube densimeter. The excess molar volume, VE, partial V̅E, were calculated from density data. These data correlated Redlich−Kister type in terms mass fraction (w), with maximum standard deviation 0.152 cm3·mol−1....
This work presents density (ρ) and viscosity (μ) data correlations of binary ternary blends containing soybean oil, biodiesel, petroleum diesel. The were obtained for different composition ranges, in a mass fraction (w) an interval 0.100 to 0.900. Additionally, taken by random range, at T = (293.15, 313.15, 333.15, 353.15, 373.15) K, atmospheric pressure. experimental compared predictive models based on group contribution method. Density correlated temperature equation (T w, as independent...