Oils And Grease
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Optimization and validation of FTIR method with tetrachloroethylene for determination of oils and grease in water matrices
O desenvolvimento de metodologias para a determinação de óleos e gordura (OG) apresenta inúmeras dificuldades e desafios para laboratórios analíticos, principalmente na análise de água potável devido ao seu baixo valor paramétrico. O método de FTIR após extração com tetracloroetileno foi desenvolvido para o monitoramento e controle de OG em vá
J. Braz. Chem. Soc.. Publicado em: 2013-09
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2. 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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3. 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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4. 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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5. Estudo hidrogeológico de um aterro sanitário instalado em uma antiga área de disposição irregular de resíduos sólidos / Hydrogeological research of a landfill set up in a previously irregular solid waste disposal area
In the past, the disposal of solid residue without any type of treatment and control was a common and widespread practice. As a result of that, the old areas used as dump have become a serious environmental and public health problem. Some of these areas are being reused in constructions now known as landfills, this time in a way that they arent a threat anym
Publicado em: 2009
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6. 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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7. 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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8. Avaliação das águas superficiais do Rio Paraguai no trecho de Cáceres (MT) pelo teste de micronúcleos em peixes e teste mancha de asas de Drosophila
CAPITULO II: A atividade genotóxica de amostras de águas superficiais, de quatro sítios ao longo do Rio Paraguai em Cáceres, Estado de Mato Grosso, Brasil, foi avaliada utilizando a o Teste para Detecção de Mutação e Recombinação Somática (SMART) em asas de Drosophila melanogaster. Efluentes dos esgotos sanitários e agro-industriais (efluentes re
Publicado em: 2008
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9. Effluent generation by the dairy industry: preventive attitudes and opportunities
Work aimed to identify the effluent is generating areas in a dairy company for purpose of changing concept pollution prevention. methodology consisted measuring volumes and collecting samples effluents production sectors. analysis was conducted by sector, order those which generated excessive amounts effluents. results show that dry products (powdered milk p
Brazilian Journal of Chemical Engineering. Publicado em: 2007-12
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10. Tratamento de efluente da indústria de processamento de coco utilizando eletroflotação
Electroflotation (EF) with aluminum electrodes was applied in the treatment of Brazilian industrial coconut wastewater. The results show that EF with polarity inversion is a very good treatment when compared to others. The removal of pollutants in the wastewater after EF with polarity inversion was 96.3% of oils and grease, 99% of color and 66% of total orga
Química Nova. Publicado em: 2004-06
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11. Atomic resolution images of solid-liquid interfaces
A scanning tunneling microscope (STM) can provide atomic-resolution images of solids covered with a variety of liquids, including cryogenic fluids, both polar and nonpolar solvents, conductive aqueous solutions, oils, and even greases. This short overview includes images of solids covered with liquid nitrogen, liquid helium, paraffin oil, silicone oil, micro