Flocculation
Mostrando 25-36 de 270 artigos, teses e dissertações.
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25. Treatment of Sanitary Landfill Leachate by Photo-Fenton Process: Effect of the Matrix Composition
In this study it was evaluated the role of the composition of sanitary landfill leachate on the removal of dissolved organic carbon (DOC) by photo-Fenton process. The composition of the matrix (high turbidity and color, as well as presence of inorganic ions sulfate and chloride) does not reduce the efficiency of DOC removal by photo-Fenton reactions, but inf
J. Braz. Chem. Soc.. Publicado em: 2016-12
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26. Isolation, identification and characterization of regional indigenous Saccharomyces cerevisiae strains
Abstract In the present work we isolated and identified various indigenous Saccharomyces cerevisiae strains and screened them for the selected oenological properties. These S. cerevisiae strains were isolated from berries and spontaneously fermented musts. The grape berries (Sauvignon blanc and Pinot noir) were grown under the integrated and organic mode of
Braz. J. Microbiol.. Publicado em: 2016-03
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27. Synthesis and Characterization of Poly(Acrylamide-Co-Acrylic Acid) Flocculant Obtained by Electron Beam Irradiation
AbstractThe goal of the paper was to prepare a class of flocculants by free-radical copolymerization of acrylamide with acrylic acid in aqueous solutions in the presence/absence of potassium persulphate as initiator. Reaction medium was submitted to electron beam treatment of 0.6 to 1.5 kGy in atmospheric conditions and at room temperature. Because of the co
Mat. Res.. Publicado em: 2015-10
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28. Synthesis of graft copolymers of acrylamide for locust bean gum using microwave energy: swelling behavior, flocculation characteristics and acute toxicity study
The graft copolymer of locust bean gum (LBG) and acrylamide has been synthesized by microwave assisted method using potassium persulphate (KPS) as an initiator in aqueous medium. Different reaction parameters such as time, initiator concentration, monomer concentration, polymer concentration, and microwave power were studied to get maximum graft copolymer. T
Polímeros. Publicado em: 2015-04
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29. Effects of immobilization and remobilization on the ankle joint in Wistar rats
A sprained ankle is a common musculoskeletal sports injury and it is often treated by immobilization of the joint. Despite the beneficial effects of this therapeutic measure, the high prevalence of residual symptoms affects the quality of life, and remobilization of the joint can reverse this situation. The aim of this study was to analyze the effects of imm
Braz J Med Biol Res. Publicado em: 15/08/2014
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30. Avaliação da remoção de fármacos e de desreguladores endócrinos em águas de abastecimento por clarificação em escala de bancada
In this work, the efficiency of clarification treatment (coagulation, flocculation and sedimentation) with polyaluminum chloride (PAC) and aluminum sulfate (SA) as coagulants was evaluated in the removal of 7 microcontaminants (diclofenac - DCF, sulfamethoxazole - SMX, ethinylestradiol - EE2, bisphenol-A - BPA, estradiol - E2, estrone - E1 and estriol - E3)
Quím. Nova. Publicado em: 2014-06
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31. Characteristics of Saccharomyces cerevisiae yeasts exhibiting rough colonies and pseudohyphal morphology with respect to alcoholic fermentation
Among the native yeasts found in alcoholic fermentation, rough colonies associated with pseudohyphal morphology belonging to the species Saccharomyces cerevisiae are very common and undesirable during the process. The aim of this work was to perform morphological and physiological characterisations of S. cerevisiae strains that exhibited rough and smooth col
Braz. J. Microbiol.. Publicado em: 04/03/2014
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32. Floculação de Chlorella sp. produzida em concentrado de dessalinização e estudo de método de extração de lipídeos intracelulares
Chlorella sp. was used to assess algal lipid production with concentrated desalination. In order to investigate the action of the flocculating agent calcium chloride and pH, a Box-Behnken Design and a Central Composite Design (CCD) were carried out. Also, Soxhlet and Supercritical Fluid Extraction (SFE), with and without sonication lipid extraction methods,
Quím. Nova. Publicado em: 2014
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33. Candida albicans morphologies revealed by scanning electron microscopy analysis
Scanning electron microscope (SEM) observations were used to analyze particular morphologies of Candida albicans clinical isolate (strain 82) and mutants defective in hyphae-promoting genes EFG1 (strain HLC52) and/ or CPH1 (strains HLC54 and Can16). Transcription factors Efg1 and Cph1 play role in regulating filamentation and adhesion of C. albicans' morphol
Braz. J. Microbiol.. Publicado em: 10/12/2013
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34. Remoção de matéria orgânica de emulsões óleo-água por eletrocoagulação - 1: análise termodinâmica
Uma análise termodinâmica da remoção de matéria orgânica (DQO) de emulsões sintéticas óleo-água, pelo processo de eletrocoagulação, foi feita com o objetivo de determinar as espécies iônicas mais estáveis, em diferentes condições de pH e concentração de alumínio, de modo a identificar os possíveis mecanismos de remoção. A análise suge
Rem: Rev. Esc. Minas. Publicado em: 2013-03
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35. Método alternativo para aplicação do coagulante natural moringa oleifera no tratamento de água / Alternative method for the application of natural coagulant moringa in water treatment
O acesso à água com padrões de qualidade adequados ao consumo humano tem sido tema de muitos estudos que visam desenvolver novas tecnologias ou aprimorar tecnologias já existentes para possibilitar o uso dessa água para abastecimento público. Como muitas tecnologias dependem de elevados investimentos e mão-de-obra qualificada, uma alternativa mais ace
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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36. Improvement of the flocculation process in water treatment by using moringa oleifera seeds extract
Water scarcity encourages researchers to keep working on natural coagulant agents such as Moringa oleifera seed extract, that could be used even in developing countries. With this scope, this investigation is focused on the optimization of certain parameters affecting the use of this coagulant product in the clarification of real surface water. Acidic pH lev
Braz. J. Chem. Eng.. Publicado em: 2012-09