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- Title
Adsorption separation of 2-phenylethanol and L-phenylalanine on polymeric resins: Adsorbent screening, single-component and binary equilibria.
- Authors
Šimko, Ivan; Roriz, Emanuel; Gramblička, Michal; Illeová, Viera; Polakovič, Milan
- Abstract
Eleven polymeric resin adsorbents were investigated for their potential to bind selectively 2-phenylethanol from solutions containing also L-phenylalanine. The capacity for single-component and the capacity/selectivity for binary adsorption of 2-phenylethanol and L-phenylalanine were determined to eliminate adsorbents with low performance. Single-component equilibrium data of both compounds were well described by the Langmuir equation for five selected adsorbents. Two most suitable adsorbents, which were both non-functionalised poly(styrene-divinylbenzene) resins with different pore structures, were then used in measurements of the binary adsorption equilibrium of 2-phenylethanol and L-phenylalanine. The modified competitive Langmuir equation and the LeVan-Vermeulen equation provided good description of co-adsorption of 2-phenylethanol and l-phenylalanine in a broad concentration range of both components when high capacity and selectivity for 2-phenylethanol binding was observed. In order to obtain data for characterization of desorption performance, adsorption isotherms of 2-phenylethanol were also determined for pure ethanol and ethanol/water solutions as solvents.
- Subjects
ADSORPTION (Biology); POLYMERIC composites; GUMS &; resins; LANGMUIR isotherms; ATMOSPHERIC temperature
- Publication
Food & Bioproducts Processing: Transactions of the Institution of Chemical Engineers Part C, 2015, Vol 95, p254
- ISSN
0960-3085
- Publication type
Article
- DOI
10.1016/j.fbp.2014.11.005