Comparative study of emerging micropollutants removal by aerobic activated sludge of large laboratory-scale membrane bioreactors and sequencing batch reactors under low-temperature conditions

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@article{ff153402a4334a38a715ac019698111f,
title = "Comparative study of emerging micropollutants removal by aerobic activated sludge of large laboratory-scale membrane bioreactors and sequencing batch reactors under low-temperature conditions",
abstract = "Four emerging micropollutants ibuprofen, diclofenac, estrone (E1) and 17α-ethinylestradiol (EE2) were studied in large laboratory-scale wastewater treatment plants (WWTPs) with high nitrifying activity. Activated sludge (AS) with sludge retention times (SRTs) of 12 days and 14 days in sequencing batch reactors (SBRs) and 30 days, 60 days and 90 days in membrane bioreactors (MBRs) were examined at 8 °C and 12 °C. Concentrations of pharmaceuticals and their main metabolites were analysed in liquid phase and solid phase of AS by liquid chromatography-tandem mass spectrometry (LC-MS/MS). A remarkable amount of contaminants were detected in solids of AS, meaning the accumulation of micropollutants in bacterial cells. The biodegradation rate constants (Kbiol) were affected by SRT and temperature. MBR with a 90-day SRT showed the best results of removal. Conventional SBR process was inefficient at 8 °C showing Kbiol values lower than 0.5 l gSS-1 d-1 for studied micropollutants.",
keywords = "Diclofenac, Estrogenic hormones, Ibuprofen, Sludge retention time, Wastewater treatment",
author = "Antonina Kruglova and Matilda Kr{\aa}kstr{\"o}m and Mats Riska and Anna Mikola and Pirjo Rantanen and Riku Vahala and Leif Kronberg",
year = "2016",
month = "8",
day = "1",
doi = "10.1016/j.biortech.2016.04.037",
language = "English",
volume = "214",
pages = "81--88",
journal = "Bioresource Technology",
issn = "0960-8524",

}

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TY - JOUR

T1 - Comparative study of emerging micropollutants removal by aerobic activated sludge of large laboratory-scale membrane bioreactors and sequencing batch reactors under low-temperature conditions

AU - Kruglova, Antonina

AU - Kråkström, Matilda

AU - Riska, Mats

AU - Mikola, Anna

AU - Rantanen, Pirjo

AU - Vahala, Riku

AU - Kronberg, Leif

PY - 2016/8/1

Y1 - 2016/8/1

N2 - Four emerging micropollutants ibuprofen, diclofenac, estrone (E1) and 17α-ethinylestradiol (EE2) were studied in large laboratory-scale wastewater treatment plants (WWTPs) with high nitrifying activity. Activated sludge (AS) with sludge retention times (SRTs) of 12 days and 14 days in sequencing batch reactors (SBRs) and 30 days, 60 days and 90 days in membrane bioreactors (MBRs) were examined at 8 °C and 12 °C. Concentrations of pharmaceuticals and their main metabolites were analysed in liquid phase and solid phase of AS by liquid chromatography-tandem mass spectrometry (LC-MS/MS). A remarkable amount of contaminants were detected in solids of AS, meaning the accumulation of micropollutants in bacterial cells. The biodegradation rate constants (Kbiol) were affected by SRT and temperature. MBR with a 90-day SRT showed the best results of removal. Conventional SBR process was inefficient at 8 °C showing Kbiol values lower than 0.5 l gSS-1 d-1 for studied micropollutants.

AB - Four emerging micropollutants ibuprofen, diclofenac, estrone (E1) and 17α-ethinylestradiol (EE2) were studied in large laboratory-scale wastewater treatment plants (WWTPs) with high nitrifying activity. Activated sludge (AS) with sludge retention times (SRTs) of 12 days and 14 days in sequencing batch reactors (SBRs) and 30 days, 60 days and 90 days in membrane bioreactors (MBRs) were examined at 8 °C and 12 °C. Concentrations of pharmaceuticals and their main metabolites were analysed in liquid phase and solid phase of AS by liquid chromatography-tandem mass spectrometry (LC-MS/MS). A remarkable amount of contaminants were detected in solids of AS, meaning the accumulation of micropollutants in bacterial cells. The biodegradation rate constants (Kbiol) were affected by SRT and temperature. MBR with a 90-day SRT showed the best results of removal. Conventional SBR process was inefficient at 8 °C showing Kbiol values lower than 0.5 l gSS-1 d-1 for studied micropollutants.

KW - Diclofenac

KW - Estrogenic hormones

KW - Ibuprofen

KW - Sludge retention time

KW - Wastewater treatment

UR - http://www.scopus.com/inward/record.url?scp=84964321118&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2016.04.037

DO - 10.1016/j.biortech.2016.04.037

M3 - Article

VL - 214

SP - 81

EP - 88

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

ER -

ID: 3339779