PMID- 22233907
OWN - NLM
STAT- MEDLINE
DCOM- 20120410
LR  - 20131121
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 65
IP  - 2
DP  - 2012
TI  - Effects of oxygen concentration on the nitrifying activity of an aerobic hybrid 
      granular sludge reactor.
PG  - 289-95
LID - 10.2166/wst.2012.795 [doi]
AB  - The aim of the work was to quantify the influence of the simultaneous presence of 
      flocs and granules in the nitrifying activity in a sequencing batch airlift 
      reactor (SBAR). The nitrification rate and oxygen limitation of flocs, granules 
      and hybrid sludge was investigated using respirometric assays at different 
      dissolved oxygen concentrations. The spatial distribution of Ammonium Oxidizing 
      Bacteria (AOB) and Nitrite Oxidizing Bacteria (NOB) was investigated using 
      fluorescence in situ hybridization (FISH). Results showed that the nitrification 
      rate was much less sensitive to oxygen limitation in systems containing a 
      fraction of flocs than in pure granular sludge. Ammonium Oxidizing Bacteria (AOB) 
      were found to be distributed in similar quantities in flocs and granules whereas 
      the Nitrite Oxidizing Bacteria (NOB) were located preferentially in granules. 
      This study showed that the presence of flocs with granules could increase the 
      robustness of the process to transitory reductions of aeration.
FAU - Filali, Ahlem
AU  - Filali A
AD  - Universite de Toulouse, Toulouse, France. filali@insa-toulouse.fr
FAU - Bessiere, Yolaine
AU  - Bessiere Y
FAU - Sperandio, Mathieu
AU  - Sperandio M
LA  - eng
PT  - Journal Article
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - 0 (Nitrogen Compounds)
RN  - 0 (Sewage)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Aerobiosis
MH  - Bacteria/classification/growth & development/*metabolism
MH  - Biological Oxygen Demand Analysis
MH  - Biomass
MH  - Bioreactors/*microbiology
MH  - Flocculation
MH  - In Situ Hybridization, Fluorescence
MH  - Microscopy, Confocal
MH  - Nitrogen Compounds/*metabolism
MH  - Oxygen/*analysis
MH  - Sewage/microbiology
MH  - Waste Disposal, Fluid/*methods
EDAT- 2012/01/12 06:00
MHDA- 2012/04/11 06:00
CRDT- 2012/01/12 06:00
PHST- 2012/01/12 06:00 [entrez]
PHST- 2012/01/12 06:00 [pubmed]
PHST- 2012/04/11 06:00 [medline]
AID - 10.2166/wst.2012.795 [doi]
PST - ppublish
SO  - Water Sci Technol. 2012;65(2):289-95. doi: 10.2166/wst.2012.795.