Influence of solvent addition on the physicochemical properties of Brazilian gasoline

Takeshita, Elaine Vosniak; Rezende, Ricardo Vicente de Paula; Souza, Selene M.A. Guelli U. de; Souza, Sabrina da Silva de

doi:10.1016/j.fuel.2007.11.003

Cited by 63 publications

(69 citation statements)

References 12 publications

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“…2,3 Estes resultados mostraram que a quantidade de compostos isoparafínicos e olefínicos presentes na composição química são majoritários em relação às outras classes de hidrocarbonetos, 23,3% e 22,9%, respectivamente, seguidos pelos aromáticos 18,9% e em menor quantidade os compostos naftênicos e parafínicos, 11.6% e 11,3%, respectivamente, o que é esperado para gasolina tipo A produzida no Brasil.…”

Section: Resultados E Discussão Estudo Da Variabilidade Da Composiçãounclassified

“…1 É um combustível líquido, volátil e inflamável, constituído por mais de 400 diferentes compostos, cuja composição final depende da origem do petróleo, dos processos de produção (destilação, alquilação, hidrocraqueamento, craqueamento catalítico, craqueamento térmico, reforma catalítica, entre outros). 2,3 De acordo com a composição química, os hidrocarbonetos presentes na gasolina pertencem principalmente às classes das parafinas (normal e ramificado), olefinas, naftenos e aromáticos, e em menores quantidades, por compostos oxigenados; formados basicamente por moléculas com cadeias de 4 a 12 átomos de carbono, com pontos de ebulição variando entre 30 a 220 °C. 4,5 Além dos hidrocarbonetos, a gasolina também possui contaminantes tóxicos naturais em baixas concentrações, formados por compostos contendo enxofre, oxigênio, benzeno, metais e nitrogênio.…”

Section: Introductionunclassified

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Estudo da qualidade da gasolina tipo A e sua composição química empregando análise de componentes principais

Carvalho¹,

Filho²

2014

Quím. Nova

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Section: Resultados E Discussão Estudo Da Variabilidade Da Composiçãounclassified

Section: Introductionunclassified

Estudo da qualidade da gasolina tipo A e sua composição química empregando análise de componentes principais

Carvalho¹,

Filho²

2014

Quím. Nova

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“…Gasoline is one of the most important petroleum fuels, and it is chemically composed of hydrocarbons containing 4 to 12 carbon atoms, which mainly belong to the classes of paraffins (normal and branched), olefins, naphthenes and aromatics [2]. The gasoline Brazilian type A is produced by refineries and delivered directly to the distributing companies, and the gasoline type C marketed in the gas stations is a mixture of gasoline type A with 27% v/v anhydrous ethyl alcohol used as additive and at most 1% v/v of benzene and 45% v/v aromatic hy-…”

Section: Introductionmentioning

confidence: 99%

Assessment of BTEX Concentrations in Air Ambient of Gas Stations Using Passive Sampling and the Health Risks for Workers

Cruz¹,

Alve²,

Santos³

et al. 2017

JEP

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Gas stations are important emissions source of benzene (C 6 H 6 ), toluene (C 7 H 8 ), ethylbenzene (C 8 H 10 ), and ortho, meta and para-xylene (C 8 H 10 )-better known by the acronym BTEX. The objective of this study was to determine the concentrations of BTEX compounds in the ambient air of ten gas stations in the cities of Salvador and Feira de Santana, Bahia, Brazil and evaluate the health risks to workers. Passive samplers diffusive of the Radiello®, containing activated carbon as adsorbent, were used. The samplers were exposed for 8 h and then the analytes were recovered by chemical desorption with CS 2 and determined by GC-FID. The BTEX concentrations found in the ambient air of gas stations ranged from 46.72 -435.43 μg·m −3 for benzene;25.54 -342.46 μg·m −3 for toluene, 7.10 -30.07 μg·m −3 for ethylbenzene, 9.36 -89.73 μg·m −3 for m, p-xylene and 9.79 -52.29 μg·m −3 for o-xylene. The concentrations of toluene, ethylbenzene and xylenes found in gas stations were lower than the limits recommended by the US NIOSH and NR-15 of the Ministry of Labour of Brazil; however, it should be considered the risks due to chronic exposure of workers. Benzene concentrations in three gas stations were above the exposure limit recommended by NIOSH (3.20 × 10 2 μg·m −3). Samplings were also held outdoors at 250 m of two gas stations. The total concentrations of the BTEX compounds were equal to 24.97 and 35.51 μg·m −3

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“…The composition of MOGAS can reach hundreds of different natural components (such as benzene and toluene) and also some additives such as Methyl Tertiary Butyl Ether (MTBE) [1] . The composition of the carbon atoms in the hydrocarbon-forming MOGAS between 4-12, with a range of distillate ranging from 30-225° C at atmospheric pressure [2] . Physically of MOGAS function is to convert thermal energy to mechanical work.…”

Section: Introductionmentioning

confidence: 99%

Optimizing an Octane Number of Motor Gasoline (MOGAS) 91 RON with Blending Methods

Huda

Wakimin

Sarungu

2017

Indonesian J Appl Phys

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Motor Gasoline (MOGAS) that serves as modifiers thermal energy into mechanical energy with a Research Octane Number (RON) of 91 was produced by mixing (blending) of two components. RON are high is one of MOGAS specifications needed for good engine performance. To obtain a MOGAS with high RON usually needs additional materials, chemical components. In this work, we don't need any additional materials to increase the RON. In the field of oil and gas blending method is a method that is widely used to acquire new products that are superior and achieve quality standards. The components used in blending these are products with a value of RON 88 and 92. Examination of specific gravity (ASTM D1298) was conducted to obtain specific gravity (SG) and temperature observations (T), while the ASTM D86 distillation examination was conducted to determine the components in materials. The results showed that the product specifications in accordance with the existing products on the market. The acquisition of distillate reached 95% with losses of about 3.9%, and the residue of 1.1%.

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Influence of solvent addition on the physicochemical properties of Brazilian gasoline

Cited by 63 publications

References 12 publications

Estudo da qualidade da gasolina tipo A e sua composição química empregando análise de componentes principais

Estudo da qualidade da gasolina tipo A e sua composição química empregando análise de componentes principais

Assessment of BTEX Concentrations in Air Ambient of Gas Stations Using Passive Sampling and the Health Risks for Workers

Optimizing an Octane Number of Motor Gasoline (MOGAS) 91 RON with Blending Methods

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