Floculation
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Pós-tratamento de efluente têxtil usando coagulação/floculação combinado com processos de separação por membranas
The textile industry uses large volumes of water in their processes, especially in the dyeing step, which are also used large quantities of coloring agents and textile auxiliaries. The presence of these products in the effluent generates a harmful effect and clearly visible to the environment because they cause changes in the parameters of the receiving body
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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2. Methods studies : calcium carbonate floculation and adptation of membrane filtration and immunomagnetic separation techniques for Cryptosporidium and Giardia detection in water samples / Estudo dos metodos : floculação em carbonato de calcio e adaptação das tecnicas de filtração em membrana e separação imunomagnetica para a detecção de Cryptosporidium e Giardia em amostras hidricas
The waterborne transmission route of giardiosis and criptosporidiosis has been considered the major one, causing the occurrence of several gastroenteritis outbreaks in several countries in the last years. Looking to this panorama, was published in Brazil the Governmental Decree 518/04 (Health Department), that recommends the research of these protozoa in wat
Publicado em: 2008
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3. Estudos de remoção de 17 alfa -etinilestradiol de aguas para abastecimento, utilizando dioxido de cloro, hipoclorito de sodio, carvão ativado em po (cap) e tratamento fisico-quimico / Studies of 17 alfa -etinilestradiol removal from supplying water, using chorine dioxide, sodium hipoclorite, powder activated carbon (cap) and physicist-chemistry treatment
The 17`alfa´-Etinilestradiol is a synthetic active pharmaceutical ingredient presents in the formulation of contraceptives used by a large amount of the female population. As a bioaccumulative molecule, the 17`alfa´-Etinilestradiol is not completely absorbed by woman organism; up to 80% can be eliminated by user, mainly by urine. Even after sewage treatmen
Publicado em: 2007
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4. ASPECTOS DA UTILIZAÇÃO DE SUBSTÂNCIA HÚMICA NO TRATAMENTO DE ÁGUA DE PRODUÇÃO / ASPECTS OF THE UTILIZATION OF HUMIC SUBSTANCE IN PRODUCED WATER TREATMENT
Produced water consists in one of the biggest environmental concerns related to oil production activities. Humic Substances (HS) are naturally formed during the humification organic residues by microorganisms and present several properties, amongst them, the ability to bind great part of the metal ions. The present work objectifies the avaluation the viabili
Publicado em: 2006
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5. Variabilidade espacial de atributos de um Argissolo Vermelho-Amarelo sob pastagem e vegetação nativa na Bacia Hidrográfica do Itapemirim / Spatial variability of physical attributes in a Yellow Red Argisols under pasture and native vegetation, in the Itapemirim River Basin.
In the rural areas of the Itapemirim River watershed the pastures prevail. These areas present erosion signs and disturbances of physical order in several levels, where inadequate handling systems to the relief conditions strongly uneven contribute to significant alterations of attributes of the soil. The objective of the present work was to verify the behav
Publicado em: 2006
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6. Propriedades de três amostras de solos da Zona da Mata de Pernambuco sob aplicação de carbonato de cálcio,carbonato de cálcio e magnésio e sulfato de cálcio / Properties of three soil samples of Mata region (Pernambuco state, Brazil) treated with calcium carbonate, calcium and magnesium carbonate, and calcium sulfate.
Samples of the surface and B horizons of a Plintosol as well as the B horizon of a Nitosol were treated with calcium carbonate, calcium and magnesium carbonate, and calcium sulfate. The objective was to study the effects of such amendments on chemical and physical properties of the soils. The experiment was carried out in a completely randomized design with
Publicado em: 2004
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7. Influencia da contaminação por bacteriaslacticos na fermentação alcoolica pelo processo de batelada alimentada
This research was carried out in 2 stages. The first stage involved isolation, taxonomy, tests of resistance to ethanol and commercial yeast flocculation tests, all aimed at selecting lactic bacteria which were natural contaminants of fermentation vats. In the second stage, a pilot system was set up to carry out fermentation assays simulating distillery cond
Publicado em: 1990
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8. Contribuição ao estudo da ação das enzimas coagulantes sobre a caseina acida e suas frações Alfa, Beta e K
Calf rennin and coagulating enzymes from Mucor miehei, Endothia parasitica were used in tests to compare their actions upon acid casein and its fractions α, β and K. The three coagulating enzymes showed distinct diffusion bands in casein-agar gel which indicated that they have different physical properties. Incubation of whole acid casein and its f
Publicado em: 1980