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231223s2009 xx ||||| 00| ||eng c |
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|a pubmed24n0639.xml
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|a (DE-627)NLM191550345
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|a (NLM)19774856
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Cherchi, Carla
|e verfasserin
|4 aut
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| 245 |
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|a Implication of using different carbon sources for denitrification in wastewater treatments
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|c 2009
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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 01.12.2009
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|a Date Revised 10.12.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a Application of external carbon sources for denitrification becomes necessary for wastewater treatment plants that have to meet very stringent effluent nitrogen limits (e.g., 3 to 5 mgTN/L). In this study, we evaluated and compared three carbon sources--MicroC (Environmental Operating Solutions, Bourne, Massachusetts), methanol, and acetate-in terms of their denitrification rates and kinetics, effect on overall nitrogen removal performance, and microbial community structure of carbon-specific denitrifying enrichments. Denitrification rates and kinetics were determined with both acclimated and non-acclimated biomass, obtained from laboratory-scale sequencing batch reactor systems or full-scale plants. The results demonstrate the feasibility of the use of MicroC for denitrification processes, with maximum denitrification rates (k(dmax)) of 6.4 mgN/gVSSh and an observed yield of 0.36 mgVSS/mgCOD. Comparable maximum nitrate uptake rates were found with methanol, while acetate showed a maximum denitrification rate nearly twice as high as the others. The maximum growth rates measured at 20 degrees C for MicroC and methanol were 3.7 and 1.2 day(-1), respectively. The implications resulting from the differences in the denitrification rates and kinetics of different carbon sources on the full-scale nitrogen removal performance, under various configurations and operational conditions, were assessed using Biowin (EnviroSim Associates, Ltd., Flamborough, Ontario, Canada) simulations for both pre- and post-denitrification systems. Examination of microbial population structures using Automated Ribosomal Intergenic Spacer Analysis (ARISA) throughout the study period showed dynamic temporal changes and distinct microbial community structures of different carbon-specific denitrifying cultures. The ability of a specific carbon-acclimated denitrifying population to instantly use other carbon source also was investigated, and the chemical-structure-associated behavior patterns observed suggested that the complex biochemical pathways/enzymes involved in the denitrification process depended on the carbon sources used
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|a Evaluation Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Acetates
|2 NLM
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|a Sewage
|2 NLM
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|a Ethanol
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|a 3K9958V90M
|2 NLM
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|a Carbon
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|a 7440-44-0
|2 NLM
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|a Glucose
|2 NLM
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|a IY9XDZ35W2
|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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| 650 |
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|a Methanol
|2 NLM
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| 650 |
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|a Y4S76JWI15
|2 NLM
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| 700 |
1 |
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|a Onnis-Hayden, Annalisa
|e verfasserin
|4 aut
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1 |
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|a El-Shawabkeh, Ibrahim
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gu, April Z
|e verfasserin
|4 aut
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| 773 |
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|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 788-99
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
1 |
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|g volume:81
|g year:2009
|g number:8
|g day:18
|g month:08
|g pages:788-99
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a AR
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|d 81
|j 2009
|e 8
|b 18
|c 08
|h 788-99
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