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Adsorption separation of 2-phenylethanol and l-phenylalanine on polymeric resins: Adsorbent screening, single-component and binary equilibria

Paper ID Volume ID Publish Year Pages File Format Full-Text
19023 43041 2015 10 PDF Available
Title
Adsorption separation of 2-phenylethanol and l-phenylalanine on polymeric resins: Adsorbent screening, single-component and binary equilibria
Abstract

•Separation of 2-phenylethanol from l-phenylalanine on polymeric resins was studied.•Langmuir isotherm parameters were used to predict binary adsorption equilibrium.•Competitive binary isotherms described well the selective binding of 2-phenylethanol.

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.

Keywords
2-phenylethanol; l-phenylalanine; Adsorption capacity; Selectivity; Binary equilibrium; Separation
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Adsorption separation of 2-phenylethanol and l-phenylalanine on polymeric resins: Adsorbent screening, single-component and binary equilibria
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 95, July 2015, Pages 254–263
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us