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231223s2008 xx ||||| 00| ||eng c |
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|a pubmed25n0602.xml
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|a (DE-627)NLM180699954
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|a (NLM)18605378
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|a DE-627
|b ger
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|e rakwb
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|a eng
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1 |
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|a Dytczak, M A
|e verfasserin
|4 aut
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|a Nitrifying genera in activated sludge may influence nitrification rates
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|c 2008
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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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|a Date Completed 30.10.2008
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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 Sequencing batch reactors were acclimated under aerobic and alternating anoxic/aerobic conditions. Greater nitrification rates in the alternating reactor were investigated by comparing environmental conditions. In the alternating reactor, pH, alkalinity, oxygen, and nitrite were higher at the onset of aerobic nitrification. Kinetic studies and batch tests, with biomass developed under aerobic and alternating conditions, revealed that these factors were insufficient to explain the divergent nitrification rates. Nitrifying genera vary in nitrification kinetics and sensitivity to environmental conditions. Nitrosospira and Nitrospira spp. could dominate in aerobic reactors, as they are adapted to low nitrite and oxygen conditions. Nitrosomonas and Nitrobacter spp. are better competitors with abundant substrates and have higher nitrite tolerance, so they could excel under alternating conditions. This theoretical explanation is consistent with the kinetics and environmental conditions in these reactors and argues for using alternating treatment, because the harsh conditions select for populations with inherently faster nitrification rates
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Sewage
|2 NLM
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Londry, K L
|e verfasserin
|4 aut
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|a Oleszkiewicz, J A
|e verfasserin
|4 aut
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 80(2008), 5 vom: 23. Mai, Seite 388-96
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnas
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| 773 |
1 |
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|g volume:80
|g year:2008
|g number:5
|g day:23
|g month:05
|g pages:388-96
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|a GBV_ILN_350
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|a AR
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|d 80
|j 2008
|e 5
|b 23
|c 05
|h 388-96
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