Redução da emissão de material particulado em função da inserção de misturas do biodiesel de soja e mamona ao diesel

Guimarães, Camila Coelho; Santos, Vivianni Marques Leite dos; Cortez, Jorge Wilson; Santos, Lucas Di Paula Gama dos

doi:10.1590/s1413-41522018168718

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…Vegetable oils, in their natural states, can be used as fuel for internal combustion engines, but occasionally cause increased damage (wear and tear) to the engine and, consequently, poor combustion. The development of biofuels for transportation has been based on converting plant sugar into ethanol through fermentation and optimizing vegetable oils by transesterification (Guimarães et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Agricultural tractor performance fueled with proportions of biodiesel

et al. 2022

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Among the fuel sources used nowadays, biofuels stand out for being renewable and biodegradable. In this sense, this work aimed to evaluate the performance and smoke opacity of an agricultural tractor in soil tillage activities, depending on the biodiesel blends and the engine rotation. Were used six blends of soy (S) and murumuru (M) biodiesel and seven engine rotation speeds. The results showed a directly proportional relationship between the drawbar power and the engine rotation decrease. Regarding hourly volumetric and weighted consumption, both presented the same behavior: the lowest consumptions were reached when using the two highest proportions of murumuru biodiesel, yet the highest specific consumption was obtained when using the 90M10S blend. Furthermore, the lowest opacity was emitted when the tractor was fueled with the three blends having the highest proportions of murumuru biodiesel. Blends with more than 80% of murumuru biodiesel promote lower fuel consumption than blends with a higher concentration of soy biodiesel. Regardless of the biodiesel blend, the traction force at the drawbar is directly proportional to an increase in the engine rotation speed. In smoke opacity, mixtures with more than 70% murumuru biodiesel promote less opacity than mixtures with a higher concentration of soy biodiesel.

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Section: Introductionmentioning

confidence: 99%

Agricultural tractor performance fueled with proportions of biodiesel

et al. 2022

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“…In an attempt to meet the demand for fuels, along with ecological awareness, researchers (Lima et al, 2013;Cunha et al, 2015;Guimarães et al, 2018) have been studying the use of biofuels that cause less damage to the environment and supply the needs of machines.…”

Section: Introductionmentioning

confidence: 99%

“…Among biofuels, biodiesel stands out for having physicochemical characteristics similar to diesel, in addition to minimizing the emission of pollutants during combustion and being used without mechanical alteration in diesel cycle engines (Guimarães et al, 2018). Biodiesel is considered a renewable fuel because the plants that are used as feedstock consume carbon, thus offsetting the carbon emitted during combustion (Lima et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Multivariate analysis to identify groups of biodiesels in the operation of an agricultural engine

Pinto

Câmara

Lopes

et al. 2021

Agraria

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The increase in the use of diesel engines in the transport sector and in agriculture has led researchers to study new alternative sources of fuels. The objective was to identify the agglomerates existing in a set of biodiesels through multivariate exploratory analysis and determine the variables that most influenced the division of agglomerates to assist in the understanding of the functioning of the engines with these biodiesels. The present work was carried out in two tests: test I -tractor performance test and test II -exhaust smoke opacity. The tractors used in the experiment were the so-called traction tractor (tractor 1), the Valtra brand, model BM100, 4X2 with auxiliary front-wheel drive, 74 kW (100 hp) at 2,300 rpm on the engine and braking tractor (Tractor 2), the Valtra brand, model BH140, 4X2 with auxiliary front-wheel drive, 103 kW (140 hp) at 2,400 rpm on the engine. The hierarchical, non-hierarchical analysis and the main component analysis grouping allowed the ordering of the biodiesels into three groups. The variables that most influenced the division of the groups were volumetric hourly consumption, hourly weight consumption, and specific consumption. The biodiesels that are part of group one have greater calorific power resulting in less consumption of biodiesel in agricultural operations.

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Venturi: dispositivo de cavitação hidrodinâmica para acelerar a síntese de biodiesel

Rezende

Fernandes

Ferreira

et al. 2021

Eng. Sanit. Ambient.

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RESUMO O objetivo deste trabalho foi avaliar o potencial do Venturi para a síntese de biodiesel a partir de óleo comestível residual em rota metílica. Para tanto, foi construído em escala de laboratório um aparato experimental constituído de um tanque de 5,2 L e um dispositivo Venturi projetado para produzir o fenômeno de cavitação. A produção de biodiesel foi avaliada em três diferentes pressões de entrada do Venturi: 4,4; 2,9; e 1,4 bar. Os teores de ésteres metílicos foram determinados por cromatografia gasosa. O tempo de síntese de 5,2 L de biodiesel, com o Venturi, foi de 23,2 segundos (ou 4,5 segundos por litro de biodiesel produzido), o que equivale a um único ciclo de passagem pelo sistema a pressão máxima (4,4 bar). Nessa condição, o rendimento dos teores de ésteres foi superior a 98%. Não há na literatura outro caso de síntese tão rápida como a encontrada neste trabalho. A caracterização do biodiesel mostrou que os parâmetros viscosidade cinemática, índice de acidez, ponto de entupimento a frio e massa específica estão dentro dos limites estabelecidos pela Agência Nacional de Petróleo. A comparação com outros estudos da literatura mostrou que o Venturi é superior às placas de orifício na síntese de biodiesel.

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Redução da emissão de material particulado em função da inserção de misturas do biodiesel de soja e mamona ao diesel

Cited by 3 publications

References 24 publications

Agricultural tractor performance fueled with proportions of biodiesel

Agricultural tractor performance fueled with proportions of biodiesel

Multivariate analysis to identify groups of biodiesels in the operation of an agricultural engine

Venturi: dispositivo de cavitação hidrodinâmica para acelerar a síntese de biodiesel

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