PMID- 18813923
OWN - NLM
STAT- MEDLINE
DCOM- 20081118
LR  - 20131121
IS  - 1432-0614 (Electronic)
IS  - 0175-7598 (Linking)
VI  - 81
IP  - 1
DP  - 2008 Nov
TI  - Effect of bulk liquid BOD concentration on activity and microbial community 
      structure of a nitrifying, membrane-aerated biofilm.
PG  - 153-62
LID - 10.1007/s00253-008-1705-x [doi]
AB  - Membrane-aerated biofilms (MABs) are an effective means to achieve nitrification 
      and denitrification of wastewater. In this research, microsensors, fluorescence 
      in situ hybridization (FISH), and modeling were used to assess the impact of bulk 
      liquid biological oxygen demand (BOD) concentrations on the activity and 
      microbial community structure of nitrifying MABs. With 1 g m(-3) BOD in the bulk 
      liquid, the nitrification rate was 1.3 g N m(-2) day(-1), slightly lower than the 
      1.5 g N m(-2) day(-1) reported for no bulk liquid BOD. With bulk liquid BOD 
      concentrations of 3 and 10 g m(-3), the rates decreased to 1 and 0.4 g N m(-2) 
      day(-1), respectively. The percent denitrification increased from 20% to 100% 
      when the BOD increased from 1 to 10 g m(-3) BOD. FISH results indicated 
      increasing abundance of heterotrophs with increasing bulk liquid BOD, consistent 
      with the increased denitrification rates. Modeling was used to assess the effect 
      of BOD on nitrification rates and to compare an MAB to a conventional biofilm. 
      The model-predicted nitrification rates were consistent with the experimental 
      results. Also, nitrification in the MAB was much less sensitive to BOD inhibition 
      than the conventional biofilm. The MAB achieved concurrent nitrification and 
      denitrification, whereas little denitrification occurred in the conventional 
      biofilm.
FAU - Downing, Leon S
AU  - Downing LS
AD  - Department of Civil Engineering and Geological Sciences, University of Notre 
      Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556, USA.
FAU - Nerenberg, Robert
AU  - Nerenberg R
LA  - eng
PT  - Journal Article
DEP - 20080924
PL  - Germany
TA  - Appl Microbiol Biotechnol
JT  - Applied microbiology and biotechnology
JID - 8406612
RN  - 0 (Nitrites)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Bacteria/genetics/*metabolism
MH  - *Biofilms
MH  - Bioreactors/microbiology
MH  - In Situ Hybridization, Fluorescence
MH  - Models, Biological
MH  - Nitrites/*metabolism
MH  - Oxygen/*metabolism
EDAT- 2008/09/25 09:00
MHDA- 2008/11/19 09:00
CRDT- 2008/09/25 09:00
PHST- 2008/07/03 00:00 [received]
PHST- 2008/09/04 00:00 [accepted]
PHST- 2008/09/02 00:00 [revised]
PHST- 2008/09/25 09:00 [pubmed]
PHST- 2008/11/19 09:00 [medline]
PHST- 2008/09/25 09:00 [entrez]
AID - 10.1007/s00253-008-1705-x [doi]
PST - ppublish
SO  - Appl Microbiol Biotechnol. 2008 Nov;81(1):153-62. doi: 10.1007/s00253-008-1705-x. 
      Epub 2008 Sep 24.