|
|
|
|
|
| Oliveira,Ricardo Cardoso de; Barros,Sueli Teresa Davantel de. |
| The aims of the present work were to study the relationship between the fluxes, permeate quality, and fouling mechanism. A polysulfone membrane with 100 KDa and 0.12 m² of surface area was used. Permeate fluxes were measured for different pressures (0.5, 1.0, 1.5, and 2.0 bar) at the same temperature of 8 ºC. The fluxes measured for each pressure ranged from 22, 24, 27 and 30 kg h-1m-2 at 0.5, 1.0, 1.5 and 2.0 bar, respectively. Samples of the feed and permeate were analyzed for pH, color, turbidity, sugar, bitterness, and proteins. The fouling mechanisms observed were cake filtration, partial pore blocking, and complete pore blocking. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microfiltration; Polymer Membrane; Pore Blocking; Turbidity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600020 |
| |
|
|
| Gomes,Eliane Rodrigues dos Santos; Mendes,Elisabete Scolin; Pereira,Nehemias Curvelo; Barros,Sueli Teresa Davantel de. |
| The aim of this study was to obtain the acerola juice using separation processes with membranes. The acerola pulp was initially defrosted and treated with 100 ppm of Citrozym Ultra L enzyme at 45ºC for one hour, then ultrafiltrated at 3 bar at 45ºC using 0.1 µm ceramic membrane, and concentrated by reverse osmosis using a spiral membrane of a compound film. The pressures on the reverse osmosis were 20, 30, and 40 bar at environmental temperature, thus, resulting a juice with 9.76, 14.56, and 17.36 ºBrix, respectively. The physicochemical characteristics of the juice were preserved and, studies on evaluation of the public acceptability, showed that 75% of the consumers liked the juice. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acerola; Ultrafiltration; Reverse osmosis; C Vitamin; Concentration. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400022 |
| |
|
|
|
