Kerosene
Mostrando 13-24 de 66 artigos, teses e dissertações.
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13. Processing of spent NiW/Al2O3 catalysts
Spent oxidized (500 ºC, 5 h) commercial NiW/Al2O3 catalysts were processed using two different routes: a) fusion with NaOH (650 ºC, 1 h), the roasted mass was leached in water; b) leaching with HCl or H2SO4 (70 ºC, 1-3 h). HCl was the best leachant. In both routes, soluble tungsten was extracted at pH 1 with Alamine 336 (10 vol.% in kerosene) and stripped
Quím. Nova. Publicado em: 2013
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14. Inclusion separation of alkali metals in emulsion liquid membranes by nanobaskets of calix[4]crown-3
Nano-assisted inclusion separation of alkali metals from basic solutions was reported by an inclusion-facilitated emulsion liquid membrane process. The novelty of this study is application of nanobaskets of calixcrown in the selective and efficient separation of alkali metals as both the carrier and the surfactant. For this purpose, two diacids, p-tert-butyl
Braz. J. Chem. Eng.. Publicado em: 2012-12
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15. Extração de ferro da cera de carnaúba utilizando sistemas microemulsionados
The constant search for biodegradable materials for applications in several fields shows that carnauba wax can be a viable alternative in the manufacturing of biolubricants. Carnauba wax is the unique among the natural waxes to have a combination of properties of great importance. In previous studies it was verified the presence of metals in wax composition
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2011
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16. Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis
Thermal degradation of waste plastics in an inert atmosphere has been regarded as a productive method, because this process can convert waste plastics into hydrocarbons that can be used either as fuels or as a source of chemicals. In this work, waste high-density polyethylene (HDPE) plastic was chosen as the material for pyrolysis. A simple pyrolysis reactor
Brazilian Journal of Chemical Engineering. Publicado em: 2011-12
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17. Avaliação da eficiência das técnicas ESI-MS e ATR/FTIR na determinação de adulteração de BX com querosene e óleo residual
Direct infusion electrospray ionization mass spectrometry in the negative ion mode, ESI(-)-MS and Fourier transform infrared spectroscopy (FTIR) were used together with partial least squares (PLS) as a tool to determine B3 adulteration (B3 - mixture of 3% v/v of biodiesel in diesel) with kerosene and residual oil.
Química Nova. Publicado em: 2011
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18. Effect of two dosages of Metarhizium anisopliae var. acridum against Rhammatocerus schistocercoides Rehn.
The fungs Metarhizizium anisopliae var. acridum, strain CG 423, was tested under fiel conditions against the gregarious grasshopper Rhannatocerus schistocercoides (Rehn) (Orthoptera: Acrididae). Conidia formulated in a rancemic mixture of soybean oil and kerosene were sprayed under field conditions using na ultralow-volume hand-held atomizer Ulva Plus adjust
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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19. Effect of two dosages of Metarhizium anisopliae var. acridum against Rhammatocerus schistocercoides Rehn.
The fungus Metarhizium anisopliae var. acridum, strain CG 423, was tested under field conditions against the gregarious grasshopper Rhammatocerus schistocercoides (Rehn) (Orthoptera: Acrididae). Conidia formulated in a racemic mixture of soybean oil and kerosene were sprayed under field conditions using an ultralow-volume hand-held atomizer Ulva Plus adjuste
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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20. Preliminary design methodology for multi fuel gas turbine combustors.
The combustors for gas turbines have been traditionally designed through trial and error, which is a time consuming and expensive process. With the development of computers and new simulation techniques the design process has been improved considerably. However, the design of combustors for gas turbines still remains an iterative process, which requires a br
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2010
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21. Preliminary design methodology for multi fuel gas turbine combustors.
The combustors for gas turbines have been traditionally designed through trial and error, which is a time consuming and expensive process. With the development of computers and new simulation techniques the design process has been improved considerably. However, the design of combustors for gas turbines still remains an iterative process, which requires a br
Publicado em: 2010
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22. Reciclagem de material asfáltico fresado utilizando solventes e microemulsões
With the increase of asphalt milling services was also a significant increase in recycling services pavements. The techniques used today are basically physical processes in which the milled material is incorporated into new asphalt mixtures or executed on site, with the addition of virgin asphalt and rejuvenating agent. In this paper seeks to analyze the eff
Publicado em: 2010
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23. Set of miniaturized structure used for manipulation of mixture. / Conjunto de estruturas miniaturizadas para manipulação de misturas.
Nowadays, mainly due to products miniaturization, engineering faces new horizons, which can be easily exemplified by the enhancement on nanotechnology development. Furthermore, not only environmental contamination but also environmental monitoring must be addressed in order to produce a systemic knowledge. Therefore, the aim of this work was to determine how
Publicado em: 2010
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24. UtilizaÃÃo de Materiais Alternativos para a ConstruÃÃo de Pavimentos Urbanos na RegiÃo Metropolitana de Fortaleza / THE USE OF ALTERNATIVE MATERIALS FOR THE CONSTRUCTION OF URBAN PAVEMENTS ON FORTALEZA METROPOLITAN REGION
The shortage of natural raw materials in large urban centers encourages the study of alternative materials. With regard to the generation of waste from construction and demolition waste (CDW) the problem goes beyond the economic barriers and their irregular arrangement results in disturbances to the population in many different ways: proliferation of vectors
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/12/2009