OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Recovery of hydroxycinnamic acids from renewable resources by adsorption on zeolites

Simon, Valérie and Thuret, Alexandre and Candy, Laure and Bassil, Sabina and Duthen, Simon and Raynaud, Christine and Masseron, Angélique Recovery of hydroxycinnamic acids from renewable resources by adsorption on zeolites. (2015) Chemical Engineering Journal, 280. 748-754. ISSN 1385-8947

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
664kB

Official URL: http://dx.doi.org/10.1016/j.cej.2015.06.009

Abstract

The aim of the study is to examine the adsorption capacity of hydroxycinnamic compounds (ferulic acid, p-coumaric acid, cinnamic acid) on zeolite adsorbents (FAU- and *BEA-type structure) versus Amberlite resin XAD16. The pH and contact time effects on adsorption were evaluated. The adsorption capacity was dependent on pH and higher at pH less than pKa1. The kinetic adsorption is faster onto FAU and *BEA zeolites than onto XAD16 resin. Maximum adsorption capacities were calculated for the target compounds for pH=3.5 by using the Langmuir isotherm model. They reached higher values for zeolites than for XAD16 and are respectively of 139, 122 and 109 mg g-1 for ferulic, p-coumaric and cinnamic acids. Values around 30 mg g-1 were observed for XAD16. Desorption ratios are close to 100 % for *BEA zeolite and XAD16 resin in the presence of ethanol 96 %. The use of regenerated zeolites leads to a loss of adsorption capacities of 30 % for the cinnamic acid and 20 % for the two other acids. It was concluded that *BEA zeolites are particularly interesting adsorbants to isolate the hydroxycinnamic compounds from vegetal extracts.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Elsevier website : http://www.sciencedirect.com/science/article/pii/S1385894715008487
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Other partners > Université de Strasbourg - UNISTRA (FRANCE)
Other partners > Université de Haute Alsace - UHA (FRANCE)
Laboratory name:
Funders:
INRA
Statistics:download
Deposited By: Valerie SIMON
Deposited On:11 Sep 2015 11:10

Repository Staff Only: item control page