NDLI: Pervaporation of aqueous dilute 1-butanol , 2-propanol , ethanol and acetone using a tubular silicalite membrane

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Pervaporation of aqueous dilute 1-butanol , 2-propanol , ethanol and acetone using a tubular silicalite membrane

Content Provider	Semantic Scholar
Author	Sakaki, Keiji Habe, Hiroshi Negishi, Hideyuki Ikegami, Toru
Copyright Year	2011
Abstract	Pervaporation is a promising method to recover bio-alcohols from fermentation broths because of its high energy-saving potential. A silicalite membrane was prepared and applied to the pervaporation separation of 1-butanol, 2-propanol, ethanol and acetone from dilute aqueous solutions. In feed solvent concentrations in the range of 0.5−5.0 wt.%, the solvent fl ux of ethanol, 2-propanol and acetone increased with the increase of feed concentration, whereas 1-butanol fl ux was not greatly infl uenced by the feed concentration. In contrast to other solvents, the separation factor for 1-butanol solution decreased with the increase of feed 1-butanol concentration. This is because 1-butanol concentration in the permeate did not increase along with the increase of the feed 1-butanol concentration due to adsorption saturation. The solvent fl ux increased with the increase of separation temperature for all the solvents. The separation factor of 1-butanol and 2-propanol increased with the increase of separation temperature in the range of 30−60°C, while the separation factor of acetone and ethanol was not greatly infl uenced by the separation temperature. Silicalite membrane shows higher selectivity toward 1-butanol solutions than silicone membrane when the feed concentration is low and the temperature is high.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.deswater.com/readpaperf.php?id=1481
Language	English
Access Restriction	Open
Subject Keyword	1-Butanol Acetone Alcohols British Informatics Olympiad Ethanol Flumazenil Isopropyl Alcohol Penicillin V Selectivity (electronic) Silicones Solutions Solvents Tissue membrane
Content Type	Text
Resource Type	Article

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