BIODIESEL.In this work, the utilization of used frying oil for production biodiesel is presented.The performance in diesel engines, as well characterization emissions derived from process, are also discussed and compared to engines running on unused vegetable oils conventional diesel.

Oxidation stability is an important quality parameter for biodiesel. In general, the methods used to evaluate oxidation of oils and biodiesels are time-consuming. This work reports use spectrofluorimetry, a fast analytical technique, associated with multivariate data analysis as powerful tool prediction stability. The showed good agreement results obtained by EN14112 reference method Rancimat. models presented high correlation (0.99276 0.97951) between real predicted values. R(2) values...

R&D&I OPPORTUNITIES AND TASKS.Contextualized overview of the Biodiesel Production Chain, from lab bench to industry, with critical evaluation state-of-art and technological development through scientific articles patents, focusing on feedstock, reaction/production, first second generation processes, specification quality, transport, storage, co-products (effluents sub-products), emissions.Challenges are identified solutions proposed based Brazilian edaphoclimatic conditions, process...

Abstract In this study, proton NMR spectroscopy (200 MHz) was used for quantifying the content of ethyl esters in known mixtures soybean oil and soyate (biodiesel). For purpose, peak areas ester ethoxy glycerol methylenic peaks region 4.05–4.40 ppm were measured a calibration plot respective vs. composition oil/ethyl used. The transesterification values determined way compared with viscosity total determinations good correlation obtained. Therefore, routine analysis, conversion (in %) to...

Abstract In order to identify possible adulteration of onroad diesel with vegetable oil, fluorescence spectroscopy was used as the analytical technique differentiate between oil and biodiesel in blends. Diesel/oil diesel/biodiesel blends made different proportions soy, canola or waste cooking were analyzed. The reduced cost analysis using together reliability results suggest that this could be great use differentiating diesel, therefore for rapid identification confirmation adulterated...

PURIFICATION OF BIODIESEL.This work describes the results of purification methyl biodiesel, obtained by oxidized soybean oil, using different methods.After ester separation from glycerin decanting, was purified each time with distillation, washing water and adsorption bauxite, bentonite attapulgite.The removal total contamination, unsaponifiable material, concentrations free soap were analyzed in phase.The best result observed use respectively.

Recently the use of brown sugar has increased due to its nutritional characteristics, thus requiring a more rigid quality control. The development method for water content analysis in soft is carried out first time by TG/DTA with application different statistical tests. results optimization study suggest that heating rates 5°C min(-1) and an alumina sample holder improve efficiency drying process. validation showed thermo gravimetry presents good accuracy precision samples. This technique...

We report the use of an optical fiber sensor to measure soybean oil concentration in samples obtained from mixture pure biodiesel and commercial oil. The operation device is based on long-period grating sensitivity surrounding medium refractive index, which leads measurable modifications transmission spectrum. proposed analysis method results errors 0.4% 2.6% for oil, respectively. Techniques total glycerol, dynamic viscosity, density, hydrogen nuclear magnetic resonance spectroscopy were...

ANALYSIS.Total spectrofluorimetry associated to Principal Components Analysis (PCA) were used classify into different groups the samples of diesel oil, biodiesel, vegetal oil and residual as well as, identify addition non-transesterified vegetable instead oil.Using this method, mixtures biodiesel in separated well-defined groups.

In this work is assessed the Brazilian potential for Carbon Capture and Geological Storage (CCS) through CO2 capture from biomass sources with focus on bioethanol production facilities. present document their geographic distribution associated localization of sedimentary basins as well geologic reservoirs CCS presented, thus providing concrete basis to define optimize longer term goals, consistent Brazil's volunteer commitment help mitigate effects global climate change. It was found that...

This paper reports the results of study biogas purification from a sanitary landfill in city Curitiba, Paraná, Brazil, which was closed 2010. The collected at two different points site, one where municipal solid waste had been over ten years (point 1) and another disposed off around five 2). done through columns containing lead acetate solution (2% m∙v–1) sodium hydroxide (3% m∙v–1), followed by percolation silica gel activated carbon granules. Levels methane 1 2 an average increase 94% 57%,...

Neste trabalho verificou-se a eficiência de diferentes adsorventes na purificação óleo soja usado em frituras. Foi verificado, igualmente, mistura carvão ativo, tonsil e bauxita que haviasido utilizado por 18, 40, 68 79 h. A reativação reutilização da adsorvente também foi testada mostrou-se viável.

Abstract Regressions based on fluorescence spectroscopy were developed to provide relatively inexpensive and rapid measurements of the concentration, viscosity, specific gravity biodiesel-diesel blends. The methods involved obtaining a mathematical model from spectrofluorimetric data given property (concentration, dynamic or gravity) using partial least squares (PLS) regression, which was then applied as for predicting properties interest. predicted concentrations, viscosities, gravities...

A new and green loss drying method in conventional oven for moisture analysis cane syrup was developed house validated at the first time this work. According factorial design results, best conditions of were use fiber glass paper discs, temperature 70 °C 90 min. In-house validation study demonstrated that presents performance comparable to Karl Fischer titration terms precision accuracy as verified by results F-test variances comparison paired t-test. This is advantageous because it uses low...

A adulteracao de combustiveis causa problemas relacionados ao desempenho dos motores de veiculos, a emissao poluentes atmosfericos, sonegacao impostos e cria no mercado uma competicao desleal, caracterizando um quadro negativo para economia do pais. Este trabalho apresenta uma prospeccao tecnologica com foco na determinacao da clorofila ou seus derivados presentes em oleos vegetais, biodiesel produtos similares, pela tecnica espectrofluorimetria, visando usar como parâmetro detectar...

With the new global scenario turned to sustainable practices, a low carbon economy, and requirement of change in energy world matrix focused on reduction dependence petroleum, is becoming an important focus research for technologies that use renewable resources reduce or eliminate production environmental pollutants contaminants process obtaining energy.The syngas by gasification waste appears as alternative traditional forms production.It can be used directly fuel input obtain other...

Nesse trabalho tratou-se mandioca recém-colhida com radiação gama nas doses de 2; 4; 6; 8 e 10 kGy para evitar o escurecimento enzimático. As amostras irradiadas foram mantidas durante 9 dias a temperatura ambiente avaliadas através da determinação cor análise sensorial. No segundo dia armazenamento, controle já apresentou manchas escuras alterações características organolépticas, enquanto as 2 6 apresentaram ótima aparência geral aceitabilidade. Entretanto, nove estavam impróprias consumo,...