Abstract
While the specific recovery of valuable chemicals from waste streams represents an environmentally-friendly and potentially economically-relevant alternative to synthetic chemical productions, it remains a largely unmet challenge. This is partially explained by the complexity of designing sorption materials able to target one specific compound and able to function in complex matrices. In this work, a series of cyclodextrin-based polymers (CDPs) were designed to selectively extract phenolic compounds from a complex organic matrix that is olive oil mill wastewater (OMW). In order to endow these polymers with selective adsorption properties, several monomers and cross-linkers were screened and selected. The adsorption properties of the CDPs produced were first tested with selected phenolic compounds commonly found in OMW, namely syringic acid, p-coumaric acid, tyrosol and caffeic acid. The selected CDPs were subsequently tested for their ability to adsorb phenolic compounds directly from OMW, which is known to possess a high and complex organic content. It was demonstrated through high-performance liquid chromatography-mass spectroscopy analyses that efficient removal of phenolic compounds from OMW could be achieved but also that two compounds, namely tyrosol and hydroxytyrosol, could be selectively extracted from OMW.
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The financial support of the European commission Knowledge Based Bio-Economy (KBBE) through the Water4Crops project (L216-0222-2) is gratefully acknowledged.
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El Idrissi, M., Molina Bacca, A.E., Frascari, D. et al. Cyclodextrin-based polymeric materials for the specific recovery of polyphenolic compounds through supramolecular host–guest interactions. J Incl Phenom Macrocycl Chem 88, 35–42 (2017). https://doi.org/10.1007/s10847-017-0708-6
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DOI: https://doi.org/10.1007/s10847-017-0708-6