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20231223191434.0 |
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231223s2009 xx ||||| 00| ||eng c |
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|a pubmed24n0639.xml
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|a (DE-627)NLM191550310
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|a (NLM)19774854
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Gaulke, Linda S
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Estrogen nitration kinetics and implications for wastewater treatment
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| 264 |
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1 |
|c 2009
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 01.12.2009
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|a Date Revised 23.09.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a Understanding estrogen-removal mechanisms in wastewater treatment is imperative, as estrogens have environmental effects at trace concentrations. Previous research investigating co-metabolic degradation of 17alpha-ethinylestradiol (EE2) by ammonia-oxidizing bacteria (AOB) revealed that, in batch tests where high nitrite-nitrogen (NO2-N) concentrations occurred as a result of ammonia-nitrogen (NH4-N) oxidation by AOB, an abiotic estrogen nitration reaction actually was occurring--not co-metabolic degradation. This paper addresses nitration kinetics. A first-order abiotic nitration model was developed that predicts nitration of EE2, 17beta-estradiol (E2), and estrone (El) as a function of temperature, pH, estrogen (EE2, E2, and E1), and NO2-N concentration. A contact time of 3.6 to 4.1 days is required for 90% estrogen nitration at 500 mg/L NO2-N and pH 6.4. At 20 degrees C and pH 6.4, the threshold NO2-N concentration for nitration to occur is 9 mg/L; therefore, estrogen nitration is not likely in activated sludge treatment of domestic wastewater, but has potential for high-NH4-N-strength wastewaters
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| 650 |
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|a Journal Article
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| 650 |
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4 |
|a Research Support, Non-U.S. Gov't
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| 650 |
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4 |
|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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7 |
|a Estrogens
|2 NLM
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| 650 |
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|a Nitrites
|2 NLM
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| 650 |
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|a Water Pollutants, Chemical
|2 NLM
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| 650 |
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7 |
|a Nitrogen
|2 NLM
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| 650 |
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7 |
|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Strand, Stuart E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kalhorn, Thomas F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stensel, H David
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 81(2009), 8 vom: 18. Aug., Seite 772-8
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
1 |
8 |
|g volume:81
|g year:2009
|g number:8
|g day:18
|g month:08
|g pages:772-8
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_NLM
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|a GBV_ILN_350
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|a AR
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| 952 |
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|d 81
|j 2009
|e 8
|b 18
|c 08
|h 772-8
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