Abstract

This article reviews studies focusing on the removal performance of natural estrogens in municipal wastewater treatment plants (WWTPs). Key factors influencing removal include: sludge retention time (SRT), aeration, temperature, mixed liquor suspended solids (MLSS), and substrate concentration. Batch studies show that natural estrogens should biodegrade well; however, batch observations do not always agree with observations from full-scale municipal WWTPs. To explain this discrepancy, deconjugation kinetics of estrogen conjugates in lab-scale studies were examined and compared. Most estrogen conjugates with slow deconjugation rates are unlikely to be easily removed; others could be cleaved in WWTP settings. Nevertheless, some estrogens cleaved from their conjugates may be found in treated effluent, because deconjugation requires several hours or longer, and there is insufficient rest time for the biodegradation of the cleaved natural estrogens in the WWTP. Therefore, WWTP removals of natural estrogens are likely to be underestimated when estrogen conjugates are present in raw wastewater. This review suggests that biodeconjugation of estrogen conjugates should be enhanced to more effectively remove natural estrogens in WWTPs.

Original languageEnglish (US)
Pages (from-to)5288-5300
Number of pages13
JournalEnvironmental Science and Technology
Volume49
Issue number9
DOIs
StatePublished - May 5 2015

Fingerprint

Wastewater treatment
Estrogens
aeration
wastewater treatment plant
removal
biodegradation
sludge
effluent
wastewater
substrate
kinetics
Biodegradation
Effluents
Wastewater
temperature
Kinetics
Substrates

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Removal of natural estrogens and their conjugates in municipal wastewater treatment plants : A critical review. / Liu, Ze Hua; Lu, Gui Ning; Yin, Hua; Dang, Zhi; Rittmann, Bruce.

In: Environmental Science and Technology, Vol. 49, No. 9, 05.05.2015, p. 5288-5300.

Research output: Contribution to journalArticle

@article{715aeb7270e149c897adc3a62b53bb30,
title = "Removal of natural estrogens and their conjugates in municipal wastewater treatment plants: A critical review",
abstract = "This article reviews studies focusing on the removal performance of natural estrogens in municipal wastewater treatment plants (WWTPs). Key factors influencing removal include: sludge retention time (SRT), aeration, temperature, mixed liquor suspended solids (MLSS), and substrate concentration. Batch studies show that natural estrogens should biodegrade well; however, batch observations do not always agree with observations from full-scale municipal WWTPs. To explain this discrepancy, deconjugation kinetics of estrogen conjugates in lab-scale studies were examined and compared. Most estrogen conjugates with slow deconjugation rates are unlikely to be easily removed; others could be cleaved in WWTP settings. Nevertheless, some estrogens cleaved from their conjugates may be found in treated effluent, because deconjugation requires several hours or longer, and there is insufficient rest time for the biodegradation of the cleaved natural estrogens in the WWTP. Therefore, WWTP removals of natural estrogens are likely to be underestimated when estrogen conjugates are present in raw wastewater. This review suggests that biodeconjugation of estrogen conjugates should be enhanced to more effectively remove natural estrogens in WWTPs.",
author = "Liu, {Ze Hua} and Lu, {Gui Ning} and Hua Yin and Zhi Dang and Bruce Rittmann",
year = "2015",
month = "5",
day = "5",
doi = "10.1021/acs.est.5b00399",
language = "English (US)",
volume = "49",
pages = "5288--5300",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "9",

}

TY - JOUR

T1 - Removal of natural estrogens and their conjugates in municipal wastewater treatment plants

T2 - A critical review

AU - Liu, Ze Hua

AU - Lu, Gui Ning

AU - Yin, Hua

AU - Dang, Zhi

AU - Rittmann, Bruce

PY - 2015/5/5

Y1 - 2015/5/5

N2 - This article reviews studies focusing on the removal performance of natural estrogens in municipal wastewater treatment plants (WWTPs). Key factors influencing removal include: sludge retention time (SRT), aeration, temperature, mixed liquor suspended solids (MLSS), and substrate concentration. Batch studies show that natural estrogens should biodegrade well; however, batch observations do not always agree with observations from full-scale municipal WWTPs. To explain this discrepancy, deconjugation kinetics of estrogen conjugates in lab-scale studies were examined and compared. Most estrogen conjugates with slow deconjugation rates are unlikely to be easily removed; others could be cleaved in WWTP settings. Nevertheless, some estrogens cleaved from their conjugates may be found in treated effluent, because deconjugation requires several hours or longer, and there is insufficient rest time for the biodegradation of the cleaved natural estrogens in the WWTP. Therefore, WWTP removals of natural estrogens are likely to be underestimated when estrogen conjugates are present in raw wastewater. This review suggests that biodeconjugation of estrogen conjugates should be enhanced to more effectively remove natural estrogens in WWTPs.

AB - This article reviews studies focusing on the removal performance of natural estrogens in municipal wastewater treatment plants (WWTPs). Key factors influencing removal include: sludge retention time (SRT), aeration, temperature, mixed liquor suspended solids (MLSS), and substrate concentration. Batch studies show that natural estrogens should biodegrade well; however, batch observations do not always agree with observations from full-scale municipal WWTPs. To explain this discrepancy, deconjugation kinetics of estrogen conjugates in lab-scale studies were examined and compared. Most estrogen conjugates with slow deconjugation rates are unlikely to be easily removed; others could be cleaved in WWTP settings. Nevertheless, some estrogens cleaved from their conjugates may be found in treated effluent, because deconjugation requires several hours or longer, and there is insufficient rest time for the biodegradation of the cleaved natural estrogens in the WWTP. Therefore, WWTP removals of natural estrogens are likely to be underestimated when estrogen conjugates are present in raw wastewater. This review suggests that biodeconjugation of estrogen conjugates should be enhanced to more effectively remove natural estrogens in WWTPs.

UR - http://www.scopus.com/inward/record.url?scp=84928914587&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928914587&partnerID=8YFLogxK

U2 - 10.1021/acs.est.5b00399

DO - 10.1021/acs.est.5b00399

M3 - Article

C2 - 25844648

AN - SCOPUS:84928914587

VL - 49

SP - 5288

EP - 5300

JO - Environmental Science & Technology

JF - Environmental Science & Technology

SN - 0013-936X

IS - 9

ER -