Lílian Lefol Nani Guarieiro

Metodologia analítica para quantificar o teor de biodiesel na mistura biodiesel:diesel utilizando espectroscopia na região do infravermelho

Considered the best substitute for diesel, biodiesel can be blended with diesel in any ratio, bringing lots of environmental, economic and social advantages. Brazilian law No 11097/2005, proposes the introduction of biodiesel in to the Brazilian energy matrix, mixed with diesel at a minimum percentage of 2%. For consumers and sellers to be sure that the commercialized mixture of biodiesel:diesel contains the correct percentage, it is necessary to develop analytical methodologies to quantify the amount of biodiesel added. This work presents a fast, low-cost and simple methodology to determine the biodiesel proportion in mixtures of biodiesel:diesel, based on infrared spectroscopy.

Particle emission from heavy-duty engine fuelled with blended diesel and biodiesel

In this study, particulate matter (PM) were characterized from a place impacted by heavy-duty vehicles (Bus Station) fuelled with diesel/biodiesel fuel blend (B3) in the city of Londrina, Brazil. Sixteen priority polycyclic aromatic hydrocarbons (PAH) concentrations were analyzed in the samples by their association with atmospheric PM, mass size distributions and major ions (fluorite, chloride, bromide, nitrate, phosphate, sulfate, nitrite, oxalate; fumarate, formate, succinate and acetate; lithium, sodium, potassium, magnesium, calcium and ammonium). Results indicate that major ions represented 21.2% particulate matter mass. Nitrate, sulfate, and ammonium, respectively, presented the highest concentration levels, indicating that biodiesel may also be a significant source for these ions, especially nitrate. Dibenzo[a,h]anthracene and indeno[1,2,3,-cd]pyrene were the main PAH found, and a higher fraction of PAH particles was found in diameters lower than 0.25xa0μm in Londrina bus station. The fine and ultrafine particles were dominant among the PM evaluated, suggesting that biodiesel decreases the total PAH emission. However, it does also increase the fraction of fine and ultrafine particles when compared to diesel.

Experimental Evaluation of Marine Diesel Engine Performance Using Blends of Biodiesel and Diesel with High-Sulfur Concentration

The diesel fuel is widely used in Brazil and its composition can have high sulfur contents (up to 5000 ppm, 0.5 wt%) depending on its purpose, such as the fuel used in vessels called marine Diesel. Thus, this study aimed to evaluate the performance (power, torque and fuel consumption) of diesel engines fueled with mixtures of marine diesel and biodiesel. The fuels were evaluated mixtures of 5% (B5); 10% (B10); 20% (B20); 40% (B40), 60% (B60) of biodiesel added to marine diesel and pure biodiesel (B100). The results obtained for power showed that biodiesel blends performed better around 2500 rpm. The results of torque to the fuel blends were in the range 366-374 Nm in rotation around 1500 rpm and 370 Nm for the same speed marine diesel. The marine diesel showed the best results in fuel consumption (20.8 kg / ha 1500 rpm). The use of 5% biodiesel added to marine diesel was 7.7% economically more advantageous than pure marine diesel.O oleo diesel e um combustivel muito utilizado no Brasil e sua composicao pode apresentar teores de enxofre elevados podendo chegar ate 5.000 ppm (0,5% em massa) a depender de sua finalidade, como e o caso do combustivel utilizado em embarcacoes, o chamado diesel maritimo. Neste contexto, este trabalho teve como objetivo avaliar o desempenho (potencia, torque e consumo de combustivel) de motores do ciclo diesel abastecidos com misturas de diesel maritimo e biodiesel. Os combustiveis avaliados foram as misturas de 5% (B5); 10% (B10); 20% (B20); 40% (B40), 60% (B60) de biodiesel adicionado ao diesel maritimo e o biodiesel puro (B100). Os resultados obtidos para potencia demonstram que as misturas de biodiesel tiveram melhor desempenho na rotacao em torno de 2500 rpm. Os resultados de torque para as misturas combustiveis estiveram na faixa de 366 – 374 Nm na rotacao em torno de 1500 rpm e 370 Nm para o diesel maritimo em mesma rotacao. O diesel maritimo apresentou os melhores resultados de consumo de combustivel (20,8 kg/h a 1500 rpm). A utilizacao 5% de biodiesel adicionado ao diesel maritimo foi 7,7% mais vantajoso economicamente do que diesel maritimo puro. DOI: 10.5935/1984-6835.20160085

Avaliação Experimental do Desempenho de Motores do Ciclo Diesel Utilizando Misturas Biodiesel/Diesel Marítimo

O oleo diesel e um combustivel muito utilizado no Brasil e sua composicao pode apresentar teores de enxofre elevados podendo chegar ate 5.000 ppm (0,5% em massa) a depender de sua finalidade, como e o caso do combustivel utilizado em embarcacoes, o chamado diesel maritimo. Neste contexto, este trabalho teve como objetivo avaliar o desempenho (potencia, torque e consumo de combustivel) de motores do ciclo diesel abastecidos com misturas de diesel maritimo e biodiesel. Os combustiveis avaliados foram as misturas de 5% (B5); 10% (B10); 20% (B20); 40% (B40), 60% (B60) de biodiesel adicionado ao diesel maritimo e o biodiesel puro (B100). Os resultados obtidos para potencia demonstram que as misturas de biodiesel tiveram melhor desempenho na rotacao em torno de 2500 rpm. Os resultados de torque para as misturas combustiveis estiveram na faixa de 366 – 374 Nm na rotacao em torno de 1500 rpm e 370 Nm para o diesel maritimo em mesma rotacao. O diesel maritimo apresentou os melhores resultados de consumo de combustivel (20,8 kg/h a 1500 rpm). A utilizacao 5% de biodiesel adicionado ao diesel maritimo foi 7,7% mais vantajoso economicamente do que diesel maritimo puro. DOI: 10.5935/1984-6835.20160085

Synergy Between Industry and Graduate Programs in Brazil: A Success Story on the Theme of Environmental Management

This paper discusses research activities for innovative industry in the state of Bahia under the theme of Environmental Management through the course of professional master. We describe several lines of research initiated and influenced by demand from industry in Bahia, especially in the role of the student graduate professional masters program in Management and Industrial Technology (GETEC), Campus Integrated Manufacturing and Technology (CIMATEC) from SENAI-BA. It is observed that, even in the case of a masters degree included in the interdisciplinary area, themed in management and engineering, research in topics typically considered in the context of chemistry is essential, especially when considering the huge demand for industry-related topics environment, clean technologies and environmentally friendly materials.