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Type: Artigo de periódico
Title: Selection of Adsorbents and Determination of Parameters for the Separation of Glucose, Fructose, Sucrose and Fructooligosaccharides
Author: Kuhn, RC
Maugeri, F
Abstract: This work aimed to describe the adsorption of sugars (glucose, fructose, sucrose and fructooligosaccharides) employing different adsorbents (celite, active carbon and NaX zeolite) by means of isothermal models. At the adsorbent selection step, the active carbon exhibited a higher affinity for the adsorption of fructooligosaccharides. On the other hand, the adsorbents NaX zeolite and celite presented the highest adsorption stability with glucose, giving values of 1.496 g glucose/g zeolite and 1.35 g glucose/g celite. Therefore, zeolite and celite were the adsorbents selected for the determination of isothermal kinetics and it was shown that the linear model (q*= k.C*) provided the best fit for the experimental data. The temperatures studied were 30, 40 and 50 degrees C, and the 50 degrees C resulted in the highest partition coefficient (k) for glucose on celite, indicating that higher temperatures benefit sugar adsorption.
Subject: adsorption
active carbon
Country: EUA
Editor: Berkeley Electronic Press
Rights: embargo
Identifier DOI: 10.2202/1556-3758.1870
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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