Oil And Grease
Mostrando 25-34 de 34 artigos, teses e dissertações.
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25. Utilização de lírio amarelo (Hemerocallis flava) em sistemas alagados construídos para tratamento de esgoto doméstico / Use of yellow lily (Hemerocallis flava) in construtect wetlands for treatment of domestic sewage
The objective of the present study was to evaluate the performance of four constructed wetlands subsurface flow systems (CW), operated with different rates of application in the treatment of domestic sewage. The experiment was conducted at the Experimental Area for Treatment of Municipal Waste, Department of Agricultural Engineering, Federal University of Vi
Publicado em: 2008
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26. Proposal of environmental management of a poultry slaughterhouse focusing use and reuse of water / AvaliaÃÃo da gestÃo do uso e reÃso de Ãgua em abatedouro de aves
Poultry industry in Pernambuco State is of social and economic relevance, mainly the activities connected to broiler production and processing. So far, the environmental sustainability of the supply chain is of main importance. The objective of this research was to identify the environment impacts of poultry slaughterhouses wastewater and to consider solutio
Publicado em: 2007
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27. Photocatalysis as a tertiary treatment for petroleum refinery wastewaters
Photocatalysis has been used as tertiary treatment for petroleum refinery wastewaters to comply with the regulatory discharge limits and to oxidize persistent compounds that had not been oxidized in the biological treatment. The wastewater is generated by the refinery and directly discharged into the Guanabara Bay (Rio de Janeiro). Although BOD removal is hi
Brazilian Journal of Chemical Engineering. Publicado em: 2006-12
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28. Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy
The aim of this research is to study the biodegradation of a polyurethane derived from castor oil, which contains polyester segment in its molecular structure, thus becoming susceptible to the microorganisms attack. The biodegradation of polyurethane was tested in contact with microorganisms resulting from microbiological grease degrading agents, in appropri
Polímeros. Publicado em: 2006-06
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29. A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content
This paper discusses the performance of an 800m³ full-scale UASB reactor in treating meat-packing plant and slaughterhouse effluents containing high concentrations of oil and grease (O&G) (413-645 mg/L), resulting in a COD/O&G ratio of 26-32%. Those macromolecules were considered responsible for the unbalance of the system resulting in a total washout of th
Brazilian Journal of Chemical Engineering. Publicado em: 2005-12
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30. Adsorption of residual oil from palm oil mill effluent using rubber powder
A synthetic rubber powder was used to adsorb the residual oil in palm oil mill effluent (POME). POME is the wastewater produced by the palm oil industry. It is a colloidal suspension which is 95-96% water, 0.6-0.7% oil and 4-5% total solids including 2-4% suspended solids originating in the mixing of sterilizer condensate, separator sludge and hydrocyclone w
Brazilian Journal of Chemical Engineering. Publicado em: 2005-09
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31. Estudo da Aptidão ao Desaguamento e do Potencial de Lixiviação Em Diferentes Tipos de Lodos Produzidos na Estação de Tratamento de Águas Residuárias da Coqueria da Companhia Siderúrgica de Tubarão
The coke oven production in steel industry generates a solid waste denominated coke sludge or coke mud. The large production of this material presenting substances with high environmental toxicity, demands a consolidated management comprising the processes of thickening, stabilization, conditioning, dewatering, sanitization and final disposition. Literature
Publicado em: 2004
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32. Caracterização de Efluente Têxtil e Proposta de Tratamento
Textile industry deals with a high diversity of processes and generation of wastewaters with a high content of pollutant material. Before being disposed of in water bodies, a pre-treatment of the effluent is carried out, which is sometimes ineffective. In order to be properly treated, physical and chemical properties of the effluent must be known, as well as
Publicado em: 2000
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33. 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
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34. Potential health risks from the use of fibrous mineral absorption granulates.
Attapulgite (palygorskite) and sepiolite are fibrous clay minerals used commercially as components in a wide variety of products including oil and grease adsorbents, carriers for pharmaceuticals, cosmetics, and pesticides. They are also components of drilling muds and animal litter and they are used as paint thickeners. The current annual worldwide productio