Martínez-Hernández, V. and Meffe, R. and Segura, R. and De Bustamante, I. (2015) Modelización del transporte del antibiótico sulfametoxazol durante su infiltración a través de la zona no saturada. In: Estudios en la zona no saturada. Estudios en la Zona No Saturada., XII . Universidad de Alcalá, Alcalá de Henares, pp. 165-171. ISBN 978-84-16133-91-8
Full text not available from this repository.Abstract
Sulfamethoxazole, a sulfonamide antibiotic, is worldwide used for human and veterinary applications. Its incomplete removal during conventional wastewater treatment leads to the occurrence of this compound in different water bodies. Water reuse for irrigation or artificial recharge may imply the infiltration of this compound through the unsaturated zone. Static and dynamic laboratory experiments have been carried out to evaluate the behaviour of sulfamethoxazole during infiltration through the unsaturated zone. Synthetic reclaimed water (SRW) and soil from the first centimetres of the unsaturated zone of the Manzanares-Jarama groundwater body recharge area were used for the laboratory experiments. Different sorption models were applied to describe the sorption isotherms from the batch experiments. The transport of sulfamethoxazole through the soil column was modelled using Hydrus 1D. Results show a limited, hysteretic and non-linear sorption of sulfamethoxazole onto the studied soil. The non-linear sorption equilibrium transport model is able to describe the behaviour of sulfamethoxazole. The use of a kinetic transport model does not improve the model fit to the experimental data. Sorption of sulfamethoxazole in the batch experiment is greater than sorption in the column experiment showing some dependency on the experimental conditions. The column experiment demonstrates moderate biodegradability of the antibiotic under aerobic conditions. Considering the obtained results, sulfamethoxazole is a moderate persistent compound whose environmental fate should be thoroughly investigated especially in view to update the priority contaminants list of the Water Framework Directive.
| Item Type: | Book Section |
|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry Q Science > QE Geology |
| Depositing User: | Mª Virtudes Martínez Hernández |
| Date Deposited: | 23 Nov 2015 15:08 |
| Last Modified: | 23 Nov 2015 15:13 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/552 |
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