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|Type:||Artigo de evento|
|Title:||Molecular Distillation: A Powerful Technology For Obtaining Tocopherols From Soya Sludge|
|Author:||De Moraes E.B.|
Torres Alvarez M.E.
Maciel Filho R.
Wolf Maciel M.R.
|Abstract:||Molecular distillation was studied for the separation of tocopherols from soya sludge, both experimentally and by simulation, under different operating conditions, with good agreement. Evaporator temperatures varied from 100°C to 160°C and feed flow rates ranged from 0.1 to 0.8 kg/h. The process pressure was maintained at 10 -6 bar, the feed temperature at 50°C, the condenser temperature at 60°C, and the stirring at 350 rpm. For each process condition, samples of both streams (distillate and residue) were collected and stored at -18°C before tocopherols analyses. Owing to the differences between molecular weights and vapor pressures of free fatty acids and tocopherols, tocopherols preferentially remained in the residue at evaporator temperatures of 100°C and 120°C, whereas for higher temperatures (140°C and 160°C) and lower feed flow rate, tocopherols tended to migrate to the distillate stream. Copyright © 2006 by Humana Press Inc. All rights of any nature whatsoever reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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