2013
DOI: 10.1016/j.jhazmat.2013.04.038
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Fate of estrogen conjugate 17α-estradiol-3-sulfate in dairy wastewater: Comparison of aerobic and anaerobic degradation and metabolite formation

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Cited by 42 publications
(25 citation statements)
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“…Estrogen conjugates in wastewater can be cleaved by enzymes, such as arylsulfatase and β-glucuronidase derived from wastewater bacteria; deconjugation is favored at high temperature. Zheng et al 83 showed that the aerobic degradation rate of 17α-estradiol-3-sulfate increased approximately 92 times when the operational temperature increased from 15 to 35°C; there was a corresponding 11 times enhancement in anaerobic operation. This implies that the frequency and concentrations of estrogen conjugates in municipal wastewater would be expected to be higher in colder seasons than in warmer ones.…”
Section: ■ Estrogen Conjugate Behavior Inmentioning
confidence: 99%
“…Estrogen conjugates in wastewater can be cleaved by enzymes, such as arylsulfatase and β-glucuronidase derived from wastewater bacteria; deconjugation is favored at high temperature. Zheng et al 83 showed that the aerobic degradation rate of 17α-estradiol-3-sulfate increased approximately 92 times when the operational temperature increased from 15 to 35°C; there was a corresponding 11 times enhancement in anaerobic operation. This implies that the frequency and concentrations of estrogen conjugates in municipal wastewater would be expected to be higher in colder seasons than in warmer ones.…”
Section: ■ Estrogen Conjugate Behavior Inmentioning
confidence: 99%
“…To maintain consistency and comparison with published data for trenbolone acetate metabolites and other steroids, we applied not only the standard pseudo-first order decay model [19,22,[29][30][31] but also 2 biphasic models to estimate transformation rates to account for observed biphasic characteristics. April and January inocula data (t ¼ 5 8C, 20 8C, and 35 8C) were used in this biphasic analysis, which is an analysis similar to those published by Stowe et al [32,33] for polychlorinated biphenyl (PCB) kinetic rate modeling under conditions where residual contaminants inhibited transformation rates.…”
Section: Kinetic Modelingmentioning
confidence: 99%
“…It is common knowledge that estrogens are excreted by humans or animals either as free or as sulfate-or glucuronide-conjugated estrogens, among other transformation products (Hutchins et al, 2007;Shore and Pruden, 2010;Zheng et al, 2013). As they enter the environment, the conjugated estrogens themselves might serve as the precursors of the free estrogens, dependent on the conditions.…”
Section: Introductionmentioning
confidence: 99%