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Abstract : Contaminants of emerging concern (CEC) include a wide variety of compounds like pharmaceuticals and personal care products (PPCPs) and their metabolites. In deve loping countries, CEC are gaining interest as they are contaminating the water resources. In Tunisia, for the first time, a total of 2 5 PPCPs and three of their metabolites were analysed in wastewater , reclaimed water , surface water and groundwater. Most o f selected CEC were detected not only in raw wastewater , but also in treated wastewater and reclaimed water . High contents of Cl and Na in wastewater and reclaimed water were an indication of industrial discharge. PPCPs were detected in surface water from the Meliane River ; the highest concentrations were measured close to the estuary to the Mediterranean Sea. High concentrations of 2 - OH - ibuprofene in the Meliane River downstream a wastewater treatment plant might result from the biodegradation of ibuprofe n during secondary wastewater treatment. Based on their levels of concentration , it is proposed to use carbamazepine, caffeine , ibuprofene , atenolol , feno fi bric acid, methylparabene, bi s phen o l A, and 2 - OH - ibuprofene as indicators of wastewater - derived poll ution of surface water resources in Tunisia. Salinity of the groundwater in the study area is controlled by sea water entered decades ago due to over - pumping of groundwater . Groundwater quality is also influenced by CEC as sulfamethoxazol , carbamazepine , m ethylparabene , propylparabene , bisphenol A , trichlosan , and 1 - H - benzotriazole were detected in groundwater collected from an area exposed to irrigation with reclaimed water. The presence of t hese compounds indicates that they are not completely removed du ring soil passage according to incomplete sorption and/or biodegradation . Th us, these compounds are suggested as indicators of wastewater contamination confirming the pollution of groundwater resources at sites w h ere wastewater is re used for irrigat ion in agriculture . S pecial attention has to be paid to the occurrence of TRS occurring in groundwater since this compound is recognized to produce antibiotic resistance in the environment
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Contributeur : Anne-Marie Pouget Connectez-vous pour contacter le contributeur
Soumis le : mardi 23 janvier 2018 - 13:01:17
Dernière modification le : mercredi 3 août 2022 - 04:04:13


  • HAL Id : hal-01690740, version 1



Elke Fries, Olfa Mahjoub, Borhane Mahjoub, Anne Berrehouc, Julie Lions, et al.. OCCURRENCE OF CONTAMINANTS OF EMERGING CONCERN (CEC) IN CONVENTIONAL AND NON- CONVENTIONAL WATER RESOURCES IN TUNISIA. Fresenius Environmental Bulletin, 2016, 25 (9), pp.3317-3339. ⟨hal-01690740⟩



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