Pirozzi, C;
Pontoni, L;
Fabbricino, M;
Bogush, A;
Campos, LC;
(2020)
Effect of organic matter release from natural cork used on bisphenol a removal from aqueous solution.
Journal of Cleaner Production
, 244
, Article 118675. 10.1016/j.jclepro.2019.118675.
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Abstract
The paper presents an experimental study aimed at investigating the mechanism responsible for Bisphenol A adsorption on natural cork, and the role played on process kinetics by the organic matter released from the cork. Obtained data show that natural cork has a good affinity toward Bisphenol A, with removal efficiency being as high as 75% in less than 24 h. The adsorption process is characterized by a fast-initial rate which tends to reduce progressively, and follows a pseudo second order model equation. Statistical physics analysis allows for obtaining a molecular description of the adsorption, which is shown to take place through a single anchorage point, perpendicularly to the adsorbent surface. Nuclear magnetic resonance spectroscopy and fluorescence analysis reveal that the colloidal organic matter released from the cork interacts with Bisphenol A; it also plays a relevant role in the slowing down of the adsorption rate, as it competes with cork adsorption sites for Bisphenol A. Organic matter is found to be highly heterogenous, presenting at the same time carbohydrates, aromatic and aliphatic domains. Such moieties interact stably with the contaminant in the solution probably due the establishment of dispersive forces (e.g. π-stacking) which sequestrate Bisphenol A into the inner hydrophobic core of the organic matter three-dimensional structure.
| Type: | Article |
|---|---|
| Title: | Effect of organic matter release from natural cork used on bisphenol a removal from aqueous solution |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jclepro.2019.118675 |
| Publisher version: | https://doi.org/10.1016/j.jclepro.2019.118675 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Adsorption, Bisphenol a, Cork, Emerging contaminant, Organic matter |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10084764 |
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