Behaviour of emerging contaminants in sewage sludge after anaerobic digestion
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Otros documentos de la autoría: Boix Sales, Clara; Ibáñez, Maria; Fabregat-Safont, David; Morales, E.; Pastor, L.; Sancho, Juan V; Sánchez-Ramírez, J. E.; Hernandez, Felix
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Título
Behaviour of emerging contaminants in sewage sludge after anaerobic digestionAutoría
Fecha de publicación
2016Editor
ElsevierISSN
0045-6535; 1879-1298Cita bibliográfica
BOIX, C., et al. Behaviour of emerging contaminants in sewage sludge after anaerobic digestion. Chemosphere, 2016, vol. 163, p. 296-304.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0045653516309985Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Nowadays, there is an increasing concern over the presence of contaminants in the aquatic environment, where they can be introduced from wastewater after their incomplete removal in the treatment plants. In this work, ... [+]
Nowadays, there is an increasing concern over the presence of contaminants in the aquatic environment, where they can be introduced from wastewater after their incomplete removal in the treatment plants. In this work, degradation of selected emerging pollutants in the aqueous and solid phases of sewage sludge has been investigated after anaerobic digestion using two different digesters: mesophilic and thermophilic. Initially, sludge samples were screened by ultra-high-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UHPLC-QTOF MS) for identification of emerging contaminants in the samples. In a second step, a target quantitative method based on LC coupled to tandem MS was applied for selected pollutants identified in the previous screening. The behaviour of the compounds under anaerobic conditions was studied estimating the degradation efficiency and distribution of compounds between both sludge phases. Irbesartan and benzoylecgonine seemed to be notably degraded in both phases of the sludge. Venlafaxine showed a significant concentration decrease in the aqueous phase in parallel to an increase in the solid phase. The majority of the compounds showed an increase of their concentrations in both phases after the digestion. Concentrations in the solid phase were commonly higher than in the aqueous for most contaminants, indicating that they were preferentially adsorbed onto the solid particles. [-]
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Chemosphere, 2016, vol. 163Derechos de acceso
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