Martínez-Hernández, V. and Meffe, R. and Herrera, S. and Arranz, E. and De Bustamante, I. (2014) Sorption/desorption of non-hydrophobic and ionisable pharmaceutical and personal care products from reclaimed water onto/from a natural sediment. Science of The Total Environment, 472. pp. 273-281. ISSN 00489697
Full text not available from this repository.Abstract
In the present work, the sorption of pharmaceutical and personal care products (PPCPs) (acetaminophen, atenolol, carbamazepine, caffeine, naproxen and sulphamethoxazole) onto the natural organic matter (NOM) and the inorganic surfaces of a natural sandy loam sediment was quantified separately. The quantification was based on the PPCP charge, their degree of ionisation, their octanol–water partitioning coefficient (KOW) and the sediment organic carbon fraction (ƒOC). PPCP desorption from the sediment was examined under conditions of infiltrating water containing a high concentration of inorganic ions (mimicking infiltrating reclaimedwater), and a lowconcentration (and smaller diversity) of inorganic ions (mimicking rainwater infiltration). Batch tests were performed using a sediment/water ratio of 1:4 and a PPCP initial concentration ranging from 1 to 100 μg L−1. The results showed the type and degree of PPCP ionisation to strongly influence the sorption of these compounds onto the sediment. The sorption of cationic species onto the sediment was higher than that of anionic species andmostly reversible; the sorption of neutral specieswas negligible. The anionic species sorbed less onto the sediment, but also desorbed less easily.More than 70% of the total sorptionwas due to interaction with mineral surfaces. This holds especially true for cationic species (atenolol and caffeine) which sorption was enhanced by the negative surface charge of the sediment. The presence of inorganic ions had no impact on the desorption of the PPCPs from the sediment. According to the calculated percentages of removal, the mobility followed the order: carbamazepine N acetaminophen N naproxen N atenolol N sulfamethoxazole N caffeine.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PPCPs Reclaimed water Sorption–desorption Unsaturated zone Groundwater |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QD Chemistry Q Science > QE Geology |
| Depositing User: | Mª Virtudes Martínez Hernández |
| Date Deposited: | 19 Dec 2013 14:10 |
| Last Modified: | 05 Aug 2015 08:04 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/368 |
Actions (login required)
 |
View Item |
