An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant

This study analyzed 16 bisphenols (BPs) in wastewater and sludge samples collected from different stages at a municipal wastewater treatment plant based on sequencing batch reactor technology. It also describes developing an analytical method for determining BPs in the solid phase of activated sludg...

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Main Authors: Anja Vehar, Ana Kovačič, Nadja Hvala, David Škufca, Marjetka Levstek, Marjetka Stražar, Andreja Žgajnar Gotvajn, Ester Heath
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/27/23/8634
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author Anja Vehar
Ana Kovačič
Nadja Hvala
David Škufca
Marjetka Levstek
Marjetka Stražar
Andreja Žgajnar Gotvajn
Ester Heath
author_facet Anja Vehar
Ana Kovačič
Nadja Hvala
David Škufca
Marjetka Levstek
Marjetka Stražar
Andreja Žgajnar Gotvajn
Ester Heath
author_sort Anja Vehar
collection DOAJ
description This study analyzed 16 bisphenols (BPs) in wastewater and sludge samples collected from different stages at a municipal wastewater treatment plant based on sequencing batch reactor technology. It also describes developing an analytical method for determining BPs in the solid phase of activated sludge based on solid-phase extraction and gas chromatography-mass spectrometry. Obtained concentrations are converted into mass flows, and the biodegradation of BPs and adsorption to primary and secondary sludge are determined. Ten of the sixteen BPs were present in the influent with concentrations up to 434 ng L<sup>−1</sup> (BPS). Only five BPs with concentrations up to 79 ng L<sup>−1</sup> (BPA) were determined in the plant effluent, accounting for 8 % of the total BPs determined in the influent. Eleven per cent of the total BPs were adsorbed on primary and secondary sludge. Overall, BPs biodegradation efficiency was 81%. The highest daily emissions via effluent release (1.48 g day<sup>−1</sup>) and sludge disposal (4.63 g day<sup>−1</sup>) were for BPA, while total emissions reached 2 g day<sup>−1</sup> via effluent and 6 g day<sup>−1</sup> via sludge disposal. The data show that the concentrations of BPs in sludge are not negligible, and their environmental emissions should be monitored and further studied.
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spelling doaj.art-32c010178cbf4482b178e5fe2ceba6422023-11-24T11:45:32ZengMDPI AGMolecules1420-30492022-12-012723863410.3390/molecules27238634An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment PlantAnja Vehar0Ana Kovačič1Nadja Hvala2David Škufca3Marjetka Levstek4Marjetka Stražar5Andreja Žgajnar Gotvajn6Ester Heath7Department of Environmental Sciences, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, SloveniaDepartment of Environmental Sciences, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, SloveniaDepartment of Systems and Control, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, SloveniaDepartment of Environmental Sciences, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, SloveniaWastewater Treatment Plant Domžale-Kamnik d.o.o., Študljanska Cesta 91, 1230 Domžale, SloveniaWastewater Treatment Plant Domžale-Kamnik d.o.o., Študljanska Cesta 91, 1230 Domžale, SloveniaDepartment of Chemical Engineering and Technical Safety, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna Pot 113, 1000 Ljubljana, SloveniaDepartment of Environmental Sciences, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, SloveniaThis study analyzed 16 bisphenols (BPs) in wastewater and sludge samples collected from different stages at a municipal wastewater treatment plant based on sequencing batch reactor technology. It also describes developing an analytical method for determining BPs in the solid phase of activated sludge based on solid-phase extraction and gas chromatography-mass spectrometry. Obtained concentrations are converted into mass flows, and the biodegradation of BPs and adsorption to primary and secondary sludge are determined. Ten of the sixteen BPs were present in the influent with concentrations up to 434 ng L<sup>−1</sup> (BPS). Only five BPs with concentrations up to 79 ng L<sup>−1</sup> (BPA) were determined in the plant effluent, accounting for 8 % of the total BPs determined in the influent. Eleven per cent of the total BPs were adsorbed on primary and secondary sludge. Overall, BPs biodegradation efficiency was 81%. The highest daily emissions via effluent release (1.48 g day<sup>−1</sup>) and sludge disposal (4.63 g day<sup>−1</sup>) were for BPA, while total emissions reached 2 g day<sup>−1</sup> via effluent and 6 g day<sup>−1</sup> via sludge disposal. The data show that the concentrations of BPs in sludge are not negligible, and their environmental emissions should be monitored and further studied.https://www.mdpi.com/1420-3049/27/23/8634adsorptionbiodegradationcontaminants of emerging concernGC-MSSBRsludge
spellingShingle Anja Vehar
Ana Kovačič
Nadja Hvala
David Škufca
Marjetka Levstek
Marjetka Stražar
Andreja Žgajnar Gotvajn
Ester Heath
An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant
Molecules
adsorption
biodegradation
contaminants of emerging concern
GC-MS
SBR
sludge
title An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant
title_full An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant
title_fullStr An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant
title_full_unstemmed An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant
title_short An Assessment of Mass Flows, Removal and Environmental Emissions of Bisphenols in a Sequencing Batch Reactor Wastewater Treatment Plant
title_sort assessment of mass flows removal and environmental emissions of bisphenols in a sequencing batch reactor wastewater treatment plant
topic adsorption
biodegradation
contaminants of emerging concern
GC-MS
SBR
sludge
url https://www.mdpi.com/1420-3049/27/23/8634
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