PMID- 22335102
OWN - NLM
STAT- MEDLINE
DCOM- 20120404
LR  - 20190918
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 64
IP  - 8
DP  - 2011
TI  - The use of microsensors to study the role of the loading rate and surface 
      velocity on the growth and the composition of nitrifying biofilms.
PG  - 1607-13
AB  - The good composition and activity of biofilms are very important for successful 
      operation and control of fixed-film biological reactors employed in liquid 
      effluents treatment. During the last decade, microsensors have been applied to 
      study microbial ecology. These sensors could provide information regarding the 
      microbial activity concerning nitrification and denitrification that occur inside 
      biofilms. Other techniques of molecular biology, such as fluorescence in situ 
      hybridization (FISH), have also contributed to this matter because their 
      application aids in the identification of the bacterial populations that compose 
      the biofilms. The focus of this paper was to study the loading rate and surface 
      velocity to promote the development of nitrifying biofilms in three distinct flow 
      cells that were employed in the post treatment of a synthetic wastewater 
      simulating the effluent from a UASB (Upflow Anaerobic Sludge Blanket) reactor. 
      Using the FISH technique, it was found that the population of 
      ammonia-oxidizing-bacteria was greater than that of nitrite-oxidizing-bacteria; 
      this was also supported by the lower production of nitrate determined by 
      physicochemical and microsensor analyses. It was verified that the loading rate 
      and surface velocity that promoted the greatest nitrogen removal were 0.25 g 
      N-amon m(-2)biofilm day(-1) and 1 m h(-1), respectively.
FAU - Gonzalez, B C
AU  - Gonzalez BC
AD  - Department of Hydraulics and Sanitation, University of Sao Paulo (USP), Sao 
      Carlos School of Engineering, Av. Trabalhador Sao-carlense, 400-Sao Carlos-SP, 
      13566-590, Brazil. beatrizgonzalez@sc.usp.br
FAU - Spinola, A L G
AU  - Spinola AL
FAU - Lamon, A W
AU  - Lamon AW
FAU - Araujo, J C
AU  - Araujo JC
FAU - Campos, J R
AU  - Campos JR
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  - N762921K75 (Nitrogen)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Bacteria/metabolism
MH  - *Biofilms
MH  - Bioreactors
MH  - In Situ Hybridization, Fluorescence
MH  - Nitrogen/chemistry/metabolism
MH  - Oxidation-Reduction
MH  - Oxygen
MH  - Waste Disposal, Fluid/*methods
EDAT- 2012/02/18 06:00
MHDA- 2012/04/05 06:00
CRDT- 2012/02/17 06:00
PHST- 2012/02/17 06:00 [entrez]
PHST- 2012/02/18 06:00 [pubmed]
PHST- 2012/04/05 06:00 [medline]
AID - 10.2166/wst.2011.716 [doi]
PST - ppublish
SO  - Water Sci Technol. 2011;64(8):1607-13. doi: 10.2166/wst.2011.716.