PMID- 12578173
OWN - NLM
STAT- MEDLINE
DCOM- 20030502
LR  - 20131121
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 47
IP  - 1
DP  - 2003
TI  - Effect of dissolved oxygen concentration on the biofilm and in situ analysis by 
      fluorescence in situ hybridization (FISH) and microelectrodes.
PG  - 49-57
AB  - A better understanding of microbiology and ecology of nitrifying bacteria in 
      inner biofilms is an important part of improving process performance and control. 
      Microelectrodes and fluorescent in situ hybridization (FISH) in biofilm research 
      have been used to investigate the spatial distributions of various microbial 
      activities in biofilms and have led to new experimental findings as well as 
      modifications of the homogeneous assumptions in the biofilm kinetic models. The 
      objective of this study is to try the combination of two methods, both FISH and 
      microelectrode measurements, and to provide reliable and in situ information on 
      nitrifying bacterial activity in biofilms. The characteristics of biofilm 
      developed on tygon slides were different according to the change of dissolved 
      oxygen (DO). When the DO increased from 2 to 10 mg DO/L, the rate of the biofilm 
      thickness increased and its dry density changed from 50-70 to 25-90 mg/cm3. 
      Ammonia oxidizing bacteria were not uniformly distributed in biofilm, and were 
      found at the deeper layer where oxygen is depleted, they were detected primarily 
      in the upper and middle layers of the biofilm.
FAU - Jang, A
AU  - Jang A
AD  - Department of Environ. Sci. and Eng., Kwangju Institute of Science and Technology 
      (K-JIST), 1 Oryongdong, Puk-gu, Kwangju 500-712, Korea.
FAU - Bishop, P L
AU  - Bishop PL
FAU - Okabe, S
AU  - Okabe S
FAU - Lee, S G
AU  - Lee SG
FAU - Kim, I S
AU  - Kim IS
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - N762921K75 (Nitrogen)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Bacteria
MH  - *Biofilms
MH  - Electrodes
MH  - Environmental Monitoring
MH  - In Situ Hybridization, Fluorescence
MH  - Kinetics
MH  - Nitrogen/*metabolism
MH  - Oxygen/*analysis
MH  - Solubility
MH  - Waste Disposal, Fluid
EDAT- 2003/02/13 04:00
MHDA- 2003/05/03 05:00
CRDT- 2003/02/13 04:00
PHST- 2003/02/13 04:00 [pubmed]
PHST- 2003/05/03 05:00 [medline]
PHST- 2003/02/13 04:00 [entrez]
PST - ppublish
SO  - Water Sci Technol. 2003;47(1):49-57.