Fate and removal of estrogens in municipal wastewater

Racz, LeeAnn; Goel, Ramesh

doi:10.1039/b917298j

Cited by 130 publications

(68 citation statements)

References 232 publications

(410 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The sorbent specific characteristics of the sludge and the experimental conditions largely affected the estrogen removal results, corresponding with the results of Chen and Hu (2010), Racz and Goel (2010) and Silva et al (2012). This finding could explain the sorption variability that was observed among the different studies.…”

Section: Activated and Deactivated Sludgesupporting

confidence: 59%

“…Generally, after fast initial adsorption on the sludge, biodegradation will reduce the estrogen levels in the aqueous and solid phases (Desmiarti and Li, 2013;Marti and Batista, 2014). According to Racz and Goel (2010), immediate estrogen losses in activated sludge, which occurred in our study, can largely be attributed to sorption.…”

Section: Activated and Deactivated Sludgementioning

confidence: 93%

“…The removal of hormones from the wastewater in an activated sludge system mainly involves adsorption and degradation processes (Racz and Goel, 2010;Silva et al 2012). Generally, after fast initial adsorption on the sludge, biodegradation will reduce the estrogen levels in the aqueous and solid phases (Desmiarti and Li, 2013;Marti and Batista, 2014).…”

Section: Activated and Deactivated Sludgementioning

confidence: 99%

See 2 more Smart Citations

Removal of Estrogens by Activated Sludge Under Different Conditions Using Batch Experiments

Bernardelli

Liz

Belli

et al. 2015

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-Wastewater treatment by deactivated and activated sludge was investigated to evaluate the removal of estrogens [estrone (E1), 17β-estradiol (E2), 17α-ethinylestradiol (EE2)] via adsorption and degradation. Different treatment conditions were used, including three mixed liquor volatile suspended solid (MLVSS) concentrations, three methanol concentrations (carbon source) and three types of aqueous media (water, synthetic solution, and supernatant). The E2 was degraded the fastest by the bacterial community. In all cases the removal rate increased when the initial MLVSS and methanol concentrations increased and when the macro-and micronutrients were present in the solution. In the experiments with deactivated sludge, the synthetic compound EE2 was more easily removed via sorption. The bacterial communities of the activated sludge were studied, which indicated a similarity of more than 75% between the different samples. A similarity of only 50% was found between the activated and deactivated sludges.

show abstract

Section: Activated and Deactivated Sludgesupporting

confidence: 59%

Section: Activated and Deactivated Sludgementioning

confidence: 93%

Section: Activated and Deactivated Sludgementioning

confidence: 99%

See 1 more Smart Citation

Removal of Estrogens by Activated Sludge Under Different Conditions Using Batch Experiments

Bernardelli

Liz

Belli

et al. 2015

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Among these estrogens, E2 and EE2 have three to seven orders of magnitude greater estrogenic potencies than the other EDCs identified in wastewater [27]. The lowest observable effect concentration for E2 affecting production of vitellogenin in juvenile female rainbow trout is 14 ng/L [27]. Purdom and coworkers reported that less than 1 ng/L of EE2 can stimulate male rainbow trout to produce vitellogenin [28], while Lange and coworkers found that a concentration of 4 ng/L EE2 can cause failure in the male fathead minnow to develop normal secondary sexual characteristics [29].…”

Section: Introductionmentioning

confidence: 97%

“…The four estrogens most commonly found in wastewater include three natural steroids (17b-estradiol (E2), estrone (E1) and estriol (E3)) and one synthetic compound (17a-ethinylestradiol (EE2)) that is used in contraceptives and hormone replacement therapy [26]. Among these estrogens, E2 and EE2 have three to seven orders of magnitude greater estrogenic potencies than the other EDCs identified in wastewater [27]. The lowest observable effect concentration for E2 affecting production of vitellogenin in juvenile female rainbow trout is 14 ng/L [27].…”

Section: Introductionmentioning

confidence: 99%

The joint effects of room temperature ionic liquids and ordered media on fluorescence characteristics of estrogens in water and methanol

Wang

Duan

Dahlgren

et al. 2014

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

View full text Add to dashboard Cite

h i g h l i g h t sBoth b-CD and CTAB could sensitize the fluorescence of EE2 and E2. Inclusion ratio of the complex was 1:1. Typical RTILs including [C n MIM]BF 4 and [C n MIM]PF 6 (n = 4, 6). The fluorescence lifetimes were 2.50-2.53 and 4.03-4.13 ns for EE2 and E2. The quenching process was demonstrated to be a dynamic quenching mechanism. g r a p h i c a l a b s t r a c tThe fluorescence lifetimes of EE2 were 2.50 and 4.13 ns, respectively, in water and methanol, and they increased gradually with increasing of b-CD concentrations. a r t i c l e i n f o t r a c tThis study investigated the steady-state and time-resolved fluorescence properties of 17a-ethinylestradiol (EE2) and 17b-estradiol (E2) in the presence of ordered media (b-cyclodextrins (b-CD) and cetyltrimethylammonium bromide (CTAB)). In addition, we analyzed the effects of four room temperature ionic liquids (RTILs) on the fluorescence intensities (FIs) of EE2/b-CD and E2/b-CD inclusion complexes in methanol. Both b-CD and CTAB enhanced the fluorescence of EE2 and E2. The FIs of EE2 and E2 with b-CD or CTAB in methanol were greater than those in water, possibly resulting from decreased oxygen-quenching in H 2 O molecules. b-CD and CTAB may form inclusion complexes with estrogen in both water and methanol. The inclusion ratio of the complex was 1:1 and the inclusion constant (K) values in water were greater than those in methanol. The fluorescence lifetimes were 2.50 and 4.13 ns for EE2 and 2.58 and 4.03 ns for E2 in aqueous solution and methanol, respectively. The changing trend of fluorescence lifetimes for EE2 and E2 in b-CD or CTAB was similar to the steady-state FIs. The four RTILs had a significant quenching effect on the FIs of EE2/b-CD and E2/b-CD, and the quenching process for EE2/ b-CD and E2/b-CD by RTILs was demonstrated to be a dynamic quenching mechanism. Fluorescent data obtained from these complex systems provide a theoretical foundation for understanding the interaction mechanisms between ordered media and RTILs in the analysis of estrogens.

show abstract

Adsorption Interference Mechanism for Endocrine Disrupting Compounds in Sediment–Water System by Quantitative Structure–Property Relationship Models

Zhang

Liu

et al. 2013

CLEAN Soil Air Water

View full text Add to dashboard Cite

The thermodynamics of endocrine disruption compounds (EDCs) were studied. A quantitative structure–property relationship (QSPR) model was used to estimate the contributions of the physicochemical properties (PPs) of EDCs for maximum adsorption capacity. The variables in QSPR were selected from multiple PPs through a Pearson correlation and principle component analysis. The result suggested EDCs had a strong mobility in sediments. Connolly solvent excluded volume (CSEV), polarizability, cluster count, sum of degrees, and total connectivity were identified as variables for QSPR. In single adsorption, estrone (E1), estradiol (E2), ethinylestradiol (EE2), estriol (E3), and bisphenol A (BPA) were dominated by cluster count (59.87%) and sum of degrees (−38.59%), with more roles attributed to adsorption by polarizability (70.52%) and the interaction of CSEV and polarizability (18.16%). In interference adsorption, E1, EE2, E3, and BPA was dominated by cluster count (−82.79 to 55.13%), the attribution to adsorption by the interactions from polarizability and sum of degrees (−52.06 to 66.51%) was significant for E1, EE2, E3, and BPA, with more contribution indicated for the polarizability (49.02%), sum of degree (−43.14%), and CSEV (−82.11%) to E2. The established QSPR model was helpful to explain the adsorption mechanism of multiple EDCs and organic compounds, such as pesticides and polycyclic aromatic hydrocarbons, during the adsorption progress.

show abstract

Fate and removal of estrogens in municipal wastewater

Cited by 130 publications

References 232 publications

Removal of Estrogens by Activated Sludge Under Different Conditions Using Batch Experiments

Removal of Estrogens by Activated Sludge Under Different Conditions Using Batch Experiments

The joint effects of room temperature ionic liquids and ordered media on fluorescence characteristics of estrogens in water and methanol

Adsorption Interference Mechanism for Endocrine Disrupting Compounds in Sediment–Water System by Quantitative Structure–Property Relationship Models

Contact Info

Product

Resources

About