Oil And Grease
Mostrando 13-24 de 34 artigos, teses e dissertações.
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13. Characterization of produced water in the oil industry for disposal and optimization of oil water separation. / Caracterização de água produzida na indústria de petróleo para fins de descarte e otimização do processo de separação óleo/água
The oil industry has several segments that can impact the environment. Among these, produced water which has been highlight in the environmental problem because of the great volume generated and its toxic composition. Those waters are the major source of waste in the oil industry. The composition of the produced water is strongly dependent on the production
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
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14. Seleção de fungos produtores de lipases a partir de resíduos oleosos derivados do saneamento ambiental
The selection of fungi producing lipase from oily residues of environmental sanitation is the main objective of this work. Of 113 fungal isolates obtained, 75 were pre-selected as producers of lipase. Of these,16 were selected by the largest indices enzymatic and four by growth and response to rhodamine-B test, having quantified its specific lipolytic activi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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15. Comportamento hidrodinâmico e cinético dos reatores anaeróbios compartimentado (RAC) e manta de lodo (UASB) operados em série / The hydrodynamic and kinetic bahavior of the anaerobic baffled reactor (ABR) and upflow anaerobic Sludge blanket (UASB) operated in serie
The aim of this research was to determine the hidrodymanic and kinetics behavior of a pilot system plant, treating swine liquid effluent, installed in the Zootechnical Department of the Federal University of Lavras. The pilot system was composed by several units working in series, such as sand retention box (SRB), static sieve (SS), acidification and equaliz
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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16. Synthesis of biodiesel from transesterification os soybean oil by homogeneous and heterogeneous catalysis / Síntese de biodiesel a partir da transesterificação do óleo de soja por catálises homogênea e heterogênea
Biodiesel is defined as a mono alkyl ester of fatty acids of long chain derived from renewable sources such as vegetable oils and animal fats. Its importance is related to the use as an alternative fuel for diesel cycle engines. The biodiesel could be obtained by the transesterification reaction in which triacylglycerides (oil or grease) react with alcohol i
Publicado em: 2010
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17. Effects of ultrasound on the performance improvement of wastewater microfiltration through a porous ceramic filter
Filtration under an ultrasonic field is a technique that is gaining importance in the wastewater treatment research field, not only due to its ability as a cleaning mechanism, but also as a filtration intensifier. The main objective of this research was the study of the influence of ultrasonic waves on the filtration of theoilfield wastewater (known as produ
Brazilian Journal of Chemical Engineering. Publicado em: 2009-12
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18. Avaliação de desempenho de reator anaeróbio-aeróbio com recirculação da fase líquida no tratamento de água residuária proveniente de abatedouro de aves / Performance evaluation of an anaerobic-aerobic reactor with recycle of the liquid phase for treatment of poultry slaughterhouse wastewater
This work aimed to evaluate the performance of an up-flow fixed bed reactor, operated in a continuous way, using expanded clay and polyurethane foam as supports for immobilization of the biomass, for treatment of poultry slaughterhouse wastewater. Initially, the reactor was operated under anaerobic and anaerobic-aerobic conditions for the treatment of poultr
Publicado em: 2009
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19. Vocal symptoms in workers of an alcohol and sugar mill / Sintomas vocais em trabalhadores de uma usina de álcool e açúcar
Aim: To investigate the vocal symptoms reported by workers of an alcohol and sugar mill exposed to noise and/or chemical substances. Justification: The vocal demand, physical and chemical agents may be considered risk factors for vocal disorders. Continuous exposure to noise and the presence of some pollutants (dust, smoke and others) may potentially lead to
Publicado em: 2009
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20. Filtração em campo ultrassônico.
Filtration under ultrasonic condition is a technique that is gaining importance in wastewater treatment field. The main objective of this research was the study ultrasonic waves influence on the filtration of solid-liquid systems, in order to increase the operation performance and the regenerative capacity of the filter medium. A porous ceramic filter, whose
Publicado em: 2009
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21. Filtração em campo ultrassônico.
Filtration under ultrasonic condition is a technique that is gaining importance in wastewater treatment field. The main objective of this research was the study ultrasonic waves influence on the filtration of solid-liquid systems, in order to increase the operation performance and the regenerative capacity of the filter medium. A porous ceramic filter, whose
Publicado em: 2009
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22. Caracterização do conteúdo de fossas e tanques sépticos na cidade de Natal
Only 32% of the population of Natal is attended by sewage, while the remaining population use pits and septic tanks. The characterization of the contents of septic tanks and pits contributes to the performance of such system and may guide the decision on treatment of these contents. The main of this research is to characterize the contents of interior reside
Publicado em: 2009
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23. Novas formulações de fluidos de corte: otimização, propriedades e recuperação do óleo usado
Cutting fluids are lubricants used in metal-mechanical industries. Their complex composition varies according to the type of operation carried out, also depending on the metals under treatment or investigation. Due to the high amount of mineral oil produced in Northeastern Brazil, we have detected the need to better use this class of material. In this work,
Publicado em: 2008
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24. Aperfeiçoamento no projeto de um protótipo de misturador-decantador à inversão de fases visando aplicação na indústria do petróleo
In the oil industry the mixture oil/water occurs in the operations of production, transportation and refining, as well as during the use of its derivatives. The amount of water produced associated with the oil varies and can reach values of 90% in volume in the case of mature phase of the production fields. The present work deals with the development of new
Publicado em: 2008