Membrane Separation
Mostrando 1-12 de 508 artigos, teses e dissertações.
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1. Processes for alcohol-free beer production: a review
Abstract Since the invention of beer by the Sumerian people in 5000 BC, alcohol was the main reason of the interest of consumers on beer. Only in the beginning of the 20th century alcohol-free beer was demanded and since then technology has advanced dramatically in the production of those beverages. The aim on alcohol-free beer production is to have products
Food Sci. Technol. Publicado em: 2020-06
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2. SELECTIVE SEPARATION OF Mn(II) AND Cd(II) AS WELL AS REGENERATION OF POLYMER VIA SHEAR INDUCED DISSOCIATION COUPLING WITH ULTRAFILTRATION
Abstract The selective separation of Mn(II) and Cd(II) as well as regeneration of the complexing agent were conducted by shear induced dissociation coupling with ultrafiltration (SID-UF), and the copolymer of maleic acid and acrylic acid (PMA) was used as complexing agent. At the optimal complexation conditions, pH 6 and P/M (mass ratio of polymer to metal i
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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3. Processes for alcohol-free beer production: a review
Abstract Since the invention of beer by the Sumerian people in 5000 BC, alcohol was the main reason of the interest of consumers on beer. Only in the beginning of the 20th century alcohol-free beer was demanded and since then technology has advanced dramatically in the production of those beverages. The aim on alcohol-free beer production is to have products
Food Sci. Technol. Publicado em: 13/12/2019
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4. Physiological potential of soybean seeds and its relationshipto electrical conductivity
Resumo: O teste de condutividade elétrica (CE) é capaz de detectar a deterioração de sementes ainda em sua fase inicial, tendo em vista que está relacionado com a desorganização das membranas celulares. Deste modo, o presente trabalho teve por objetivo o estudo da utilização do teste de CE como alternativa para avaliação de vigor de sementes de so
J. Seed Sci.. Publicado em: 05/12/2019
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5. 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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6. PVC MEMBRANES PREPARED VIA NON-SOLVENT INDUCED PHASE SEPARATION PROCESS
ABSTRACT Polyvinylchloride (PVC) based membranes are prepared via a phase inversion method using N,N-dimethylacetamide (DMAc) as solvent and water as precipitation bath. Polyvinylpyrrolidone (PVP) and lithium nitrate (LiNO3) are used as additives. Experimental cloud point data and solution viscosity measurements are evaluated. Precipitation rates, transport
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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7. PREPARATION AND CHARACTERIZATION OF THIN-FILM COMPOSITE REVERSE OSMOSIS MEMBRANE ON A NOVEL AMINOSILANE-MODIFIED POLYVINYL CHLORIDE SUPPORT
ABSTRACT Herein, the influence of pure and modified polyvinyl chloride (PVC) support layers on the performance of thin-film composite (TFC) membranes was investigated in water desalination. Accordingly, the PVC support was modified using (3-Aminopropyl) triethoxysilane (APTES) through bulk modification. The supports were synthesized at different doses of APT
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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8. Self-assembly modification of polyamide membrane by coating titanium dioxide nanoparticles for water treatment applications
Resumo O principal objetivo do presente estudo foi modificar a superfície de uma membrana de poliamida comercial com a deposição de nanopartículas de TiO2 pelo método self-assembly sob pressão com alta permeabilidade e atividade fotocatalítica. Mudanças nas características da membrana e seu desempenho nas propriedades fotocatalíticas foram avaliado
Rev. Ambient. Água. Publicado em: 20/05/2019
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9. Influence of sintering temperature on the development of alumina membrane shaped by centrifugal casting for gas separation
Abstract The development of ceramic membranes for the most diverse separation processes has gained high visibility, mainly due to their better performance in harsh environments in comparison to polymeric materials. Among the different techniques used to prepare tubular ceramic membranes, the centrifugal casting (CC) is interesting for obtaining highly homoge
Cerâmica. Publicado em: 2019-01
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10. 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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11. CORK MEMBRANE FOR EFFICIENT OIL AND WATER SEPARATION
Cork is a renewable, biocompatible, environmentally friendly and abundant biological material with microscale cellular structure. Fabrication of filtration membranes for the separation of oil and water by utilizing such natural materials to replace nonnatural membranes is a green method. A cork membrane with a water contact angle greater than 150° and an oi
Quím. Nova. Publicado em: 2018-07
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12. A Dual-mode model interpretation of CO2/CH4 permeability in polysulfone membranes at low pressures
ABSTRACT An asymmetric membrane of polysulfone (PSf) was synthesized by phase inversion method. Permeation experiments were carried out between 2 to 5 bar pressure, and at temperatures 20 to 45°C. The dense-selective layer of PSf membrane presents regular thickness (about 5 µm), and was not possible to observe the formation of macrovoids in porous layer. T
An. Acad. Bras. Ciênc.. Publicado em: 2018-04