Diesel Oil
Mostrando 13-24 de 227 artigos, teses e dissertações.
-
13. A novel transition identification mechanism for the diesel blending and distribution scheduling problem using the discrete time representation with two time-scales granularity
ABSTRACT Transitions between tasks arise in many different scheduling problems. Sometimes transitions are undesired because they incur costs; sometimes they are undesired because they require setup time, and sometimes both. In one way or the other, frequently, transitions need to be identified and penalized in order for their frequency to be minimized. The p
Braz. J. Chem. Eng.. Publicado em: 2017-10
-
14. USO DA ESPECTROFOTOMETRIA UV-VIS PARA DIFERENCIAR AS COLORAÇÕES DO BIODIESEL DE PALMA E DO CORANTE MARCADOR DE ÓLEO DIESEL
Currently, there are two mixtures of biodiesel/diesel fuel sold in Brazil: BX/S500 and BX /S10 (X = volume/volume biodiesel percentage; S500 and S10 = sulfur content in diesel fuels - 500 ppm and 10 ppm, respectively). In order to differentiate these mixtures, red dye is added to diesel oil as required by the National Agency for Petroleum, Natural Gas and Bi
Quím. Nova. Publicado em: 2017-08
-
15. Adaptation behaviour of bacterial species and impact on the biodegradation of biodiesel-diesel
Abstract Two bacteria, namely Bacillus subtilis and Pseudomonas aeruginosa were exposed to different concentrations of diesel to increase their adaptation to the fossil fuel, and were used for the degradation of diesel-biodiesel blends. The biodegradation rate was evaluated using the redox indicator 2,6-dichlorophenol indophenol (DCPIP) test and gravimetric
Braz. J. Chem. Eng.. Publicado em: 2017-04
-
16. BIODEGRADATION OF EFFLUENT CONTAMINATED WITH DIESEL OIL AND GASOLINE USING CHITOSAN AS A NATURAL COAGULANT IN A CONTINUOUS PROCESS
Abstract This study evaluated the effects of aeration (constant aeration, intermittent aeration and a lack of aeration) and hydraulic retention time (HRT) (2, 3 and 4 days) on a continuous process with cell recycling, using chitosan as a natural coagulant for the sedimentation of a C1 mixed culture. This culture was used for the biodegradation of hydrocarbon
Braz. J. Chem. Eng.. Publicado em: 2016-12
-
17. Antimicrobial Potential of Bio-Oil for Use in Diesel Oil B10
The aim of this study was to evaluate the antimicrobial activity of bio-oil (obtained by pyrolysis of biomass: soybean oil, eucalyptus sawdust and coffee grounds) added to the blend B10 (diesel and biodiesel). The bio-oil is compatible to diesel oil and it contains promising compounds that can exhibit antimicrobial activity during fuel storage. We evaluated
J. Braz. Chem. Soc.. Publicado em: 2016-01
-
18. DESENVOLVIMENTO DE ENSAIO PARA ANÁLISE QUALITATIVA DE BIODIESEL EM MISTURAS DIESEL-BIODIESEL PARA APLICAÇÃO EM POSTOS REVENDEDORES DE COMBUSTÍVEIS
In this study, we developed a method for the visual detection of biodiesel in petrodiesel-biodiesel (BX) blends through the aminolysis of the methyl or ethyl esters of fatty acids that are found in biodiesel and that are absent from diesel and vegetable oils. This method is based on three reactional stages, which produce a dark red and easily visualized comp
Quím. Nova. Publicado em: 2016-01
-
19. GPo1
alkB gene expression for improvement of the degradation of diesel oil by a bacterial consortiumTo facilitate the biodegradation of diesel oil, an oil biodegradation bacterial consortium was constructed. The alkane hydroxylase (
alkB ) gene ofPseudomonas putida GPo1 was constructed in a pCom8 expression vector, and the pCom8-GPo1alkB plasmid was transformed intoEscherichia coli DH5Braz. J. Microbiol.. Publicado em: 2015-09
-
20. Synthesis of Triacetin and Evaluation on Motor
Triacetin (or glycerol triacetate) was obtained by acetylating the glycerol by-product of biodiesel production process. This procedure is an interesting alternative that follows the principles of green chemistry. In this work, triacetin was synthesized using reactions between glycerol and acetic acid, as well as glycerol and acetic anhydride, using homoge
J. Braz. Chem. Soc.. Publicado em: 2015-08
-
21. Determination of Adulterants in Diesel by Integration of LED Fluorescence Spectra
This paper describes a simple and rapid methodology for determining the content of adulterants in diesel by the integration of fluorescence spectra. The procedure consists of constructing analytical curves using the concentrations of each adulterant in diesel and the relative change in the fluorescence area of each blend with respect to the fluorescence a
J. Braz. Chem. Soc.. Publicado em: 2015-07
-
22. Correlation Between the Composition and Flash Point of Diesel-Biodiesel Blends
Methyl ester biodiesels from vegetable oils, including soy, corn, canola and sunflower, and from swine lard, were prepared. They were mixed with mineral diesel to produce blends from 5% v/v to 50% v/v of biodiesel, i.e., B5, B10, B20 and B50. The flash points of these mixtures, the pure diesel (B0) and the pure biodiesel (B100) were determined. In all cases,
J. Braz. Chem. Soc.. Publicado em: 2015-02
-
23. Upgrade of Biofuels Obtained from Waste Fish Oil Pyrolysis by Reactive Distillation
Bio-oil is classified as second-generation biofuel and it is produced mainly through the pyrolysis of a waste lignocellulosic biomass base. The application of this product is still very limited, due to some of its chemical characteristics. This paper presents a proposal for the reduction of the acidity of bio-oil obtained from waste fish oil, previously prod
J. Braz. Chem. Soc.. Publicado em: 2015-02
-
24. The Mutagenic Potential Caused by the Emissions from Combustion of Crude Glycerin and Diesel Fuel
This study evaluated the use of crude glycerin as an alternative of energy generation to replace the traditional fuels. The Tradescantia stamen hair mutation assay (Trad-SH) was applied to study the mutagenic effects caused by the emissions generated in the direct combustion of diesel oil and glycerin in a flame tube furnace. Tradescantia inflorescences were
Braz. arch. biol. technol.. Publicado em: 11/11/2014