2024-03-29T13:51:31Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1654172024-02-21T10:06:50Zcom_10234_33596com_10234_9col_10234_33597
Repositori UJI
author
Boix Sales, Clara
author
Ibáñez, Maria
author
Fabregat-Safont, David
author
Morales, E.
author
Pastor, L.
author
Sancho, Juan V
author
Sánchez-Ramírez, J. E.
author
Hernandez, Felix
2017-01-19T13:36:39Z
2017-01-19T13:36:39Z
2016
BOIX, C., et al. Behaviour of emerging contaminants in sewage sludge after anaerobic digestion. Chemosphere, 2016, vol. 163, p. 296-304.
0045-65351879-1298
http://hdl.handle.net/10234/165417
http://dx.doi.org/10.1016/j.chemosphere.2016.07.098
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.
eng
Copyright © Elsevier
emerging contaminants
sewage sludge
anaerobic digestion
time-of-flight mass spectrometry
triple quadrupole mass spectrometry
Behaviour of emerging contaminants in sewage sludge after anaerobic digestion
info:eu-repo/semantics/article
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