Process Of Separation For Membrane
Mostrando 1-12 de 59 artigos, teses e dissertações.
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1. Influence of the methodology on the formation of zeolite membranes MCM-22 for the oil/water emulsion separation
Resumo Esse trabalho teve por objetivo produzir membranas zeolíticas MCM-22 utilizando dois métodos distintos de síntese, dip coating (DC) e transporte em fase vapor (VPT), para serem avaliadas no processo de separação emulsão óleo/água. As membranas foram preparadas a 150 °C por 10 dias, caracterizadas por difração de raios X e microscopia eletr�
Cerâmica. Publicado em: 14/11/2019
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2. Membranas Compuestas: propiedades superficiales y estabilidad térmica
ABSTRACT The composite membranes were manufactured with crosslinking poly(vinyl alcohol) on polyethersulfone porous membranes by coating process. PES membranes were exposed to air plasma for the purpose of surface modification. The coating of the support membrane was carried out by using a polymer matrix with a crosslinking agent. The physico-chemical proper
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Evaluation of membrane microfiltration fouling in landfill leachate treatment
ABSTRACT The membrane separation capacity allows the retention of the remaining organic matter that could not be removed by the biological process, increasing the treatment efficiency. The aim of this study was to evaluate the microfiltration (MF) process in a tertiary treatment system for landfill leachate from the Rincão das Flores, Caxias do Sul/RS/Brazi
Matéria (Rio J.). Publicado em: 05/03/2018
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4. Analysis of Composite Membranes in the Separation of Emulsions Sunflower oil/water
Oil is a major pollutant of water resources, affects aquatic life, causing environmental degradation. Currently there is an increase in studies of membrane applied to separation of oil-water. Among these membranes, there are composite membranes, which show as main characteristic an association of organic and inorganic membrane properties. In a tangential flo
Mat. Res.. Publicado em: 18/05/2017
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5. OBTAINING FRUCTOOLIGOSACCHARIDES FROM YACON (Smallanthus sonchifolius) BY AN ULTRAFILTRATION PROCESS
Abstract The objective of this study was to evaluate the separation of fructooligosaccharides (FOS) from yacon extract by an ultrafiltration process using membranes of 10 and 30 kDa. The total resistance (Rt), membrane resistance (Rm), fouling resistance (Rf), and concentration polarization (Rc) during the separation process were also assessed. The operating
Braz. J. Chem. Eng.. Publicado em: 2016-12
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6. DEVELOPMENT OF A NEW PROCESS FOR PURIFICATION OF CAPSULAR POLYSACCHARIDE FROM Streptococcus pneumoniae SEROTYPE 14
Abstract The main virulence factor of Streptococcus pneumoniae is the capsular polysaccharide (PS), which is the antigen of all current vaccines that are prepared with PS purified from serotypes prevalent in the population. In this work, three purification strategies were evaluated and a new process was developed for purification of serotype 14 PS (PS14), re
Braz. J. Chem. Eng.. Publicado em: 2016-09
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7. Selective Separation of Silver(I) Ion Through a Bulk Liquid Membrane Containing 1,1'-(1,3-Phenylene)bis(3-allylthiourea) as Carrier
The competitive bulk liquid membrane transport of six metal cations from an aqueous source phase (SP) containing Ag+, Pb2+, Cu2+, Zn2+, Co2+ and Ni2+ through an organic membrane phase (MP) facilitated by 1,1'-(1,3-phenylene)bis(3-allylthiourea) as a carrier into an aqueous receiving phase (RP) was studied and compared. Fluxes and selectivities for competitiv
J. Braz. Chem. Soc.. Publicado em: 2016-01
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8. Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures
Matrimid®5218 hollow fiber membranes were prepared using the dry-wet spinning process. The transport properties were measured with pure gases (H2, CO2, N2, CH4 and O2) and with a mixture (30% CO2 and 70% N2) in dry and wet conditions at 25 ºC, 50 ºC, 60 ºC and 75 ºC and up to 600 kPa. Interesting values of single gas selectivity up to 60 ºC (between 31
Braz. J. Chem. Eng.. Publicado em: 2014-12
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9. Oxygen air enrichment through composite membrane: application to an aerated biofilm reactor
A highly permeable composite hollow-fibre membrane developed for air separation was used in a membrane aerated biofilm reactor (MABR). The composite membrane consisted of a porous support layer covered with a thin dense film, which was responsible for oxygen enrichment of the permeate stream. Besides oxygen enrichment capability, dense membranes overcome maj
Braz. J. Chem. Eng.. Publicado em: 2013-12
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10. Inclusion separation of alkali metals in emulsion liquid membranes by nanobaskets of calix[4]crown-3
Nano-assisted inclusion separation of alkali metals from basic solutions was reported by an inclusion-facilitated emulsion liquid membrane process. The novelty of this study is application of nanobaskets of calixcrown in the selective and efficient separation of alkali metals as both the carrier and the surfactant. For this purpose, two diacids, p-tert-butyl
Braz. J. Chem. Eng.. Publicado em: 2012-12
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11. 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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12. Avaliação da permeabilidade em membrana tubular de TiO2/AL2O3 dos constituintes do sistema reacional heterogêneo para produção de biodiesel / Assessment of tubular membrane permeability in the constituents TiO2/AL2O3 reaction heterogeneous system for the production of biodiesel
In addition to being biodegradable and renewable, Biodiesel presents physicochemical properties very similar to those of petroleum-based diesel, so a new engine is not required for its use. The most commonly used chemical process for obtaining biodiesel is transesterification. In this process, through the reaction of an alcohol with triacylglycerols (TAG) pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011