PMID- 16233387
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20051108
LR  - 20191026
IS  - 1389-1723 (Print)
IS  - 1347-4421 (Linking)
VI  - 95
IP  - 2
DP  - 2003
TI  - Nitrogen removal characteristics and biofilm analysis of a membrane-aerated 
      biofilm reactor applicable to high-strength nitrogenous wastewater treatment.
PG  - 170-8
AB  - A membrane-aerated biofilm reactor (MABR) capable of simultaneous nitrification 
      and denitrification in a single reactor vessel was developed to investigate the 
      characteristics of nitrogen removal from high-strength nitrogenous wastewater, 
      and biofilm analysis using microelectrodes and the fluorescence in situ 
      hybridization (FISH) technique was performed. Mean removal percentages of total 
      organic carbon (TOC) and nitrogen were 96% and 83% at removal rates of 5.76 g-C 
      m(-2) d(-1) and 4.48 g-N m(-2) d(-1), respectively. For stable removal 
      efficiency, constant washing of the biofilm was needed. Dissolved oxygen 
      microelectrode measurement revealed that the biofilm thickness was about 1600 
      microm, and that oxygen penetrated about 300 to 700 microm, from the outer 
      surface of the membrane. Furthermore, FISH analysis revealed that 
      ammonia-oxidizing bacteria (AOB) were located near the outer surface of the 
      membrane, whereas other bacteria were located from the inner to the outer part of 
      the biofilm. Combining these results demonstrated that simultaneous nitrification 
      and denitrification occurred in the biofilm of the MABR system. In addition, 
      stoichiometric analysis revealed that after 130 d(-1), the free ammonia (FA) 
      concentration ranged within the concentration causing inhibition of the growth of 
      nitrite oxidizing bacteria (NOB) and that AOB consumed 86% of the oxygen supplied 
      through the intra-membrane. These results indicate that nitrogen removal not via 
      nitrate but via nitrite was mainly achieved in the MABR system.
FAU - Terada, Akihiko
AU  - Terada A
AD  - Department of Chemical Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku-ku, 
      Tokyo 169-8555, Japan.
FAU - Hibiya, Kazuaki
AU  - Hibiya K
FAU - Nagai, Jun
AU  - Nagai J
FAU - Tsuneda, Satoshi
AU  - Tsuneda S
FAU - Hirata, Akira
AU  - Hirata A
LA  - eng
PT  - Journal Article
PL  - Japan
TA  - J Biosci Bioeng
JT  - Journal of bioscience and bioengineering
JID - 100888800
EDAT- 2005/10/20 09:00
MHDA- 2005/10/20 09:01
CRDT- 2005/10/20 09:00
PHST- 2002/06/13 00:00 [received]
PHST- 2002/10/17 00:00 [accepted]
PHST- 2002/06/13 00:00 [received]
PHST- 2002/10/17 00:00 [accepted]
PHST- 2005/10/20 09:00 [pubmed]
PHST- 2005/10/20 09:01 [medline]
PHST- 2005/10/20 09:00 [entrez]
AID - S1389-1723(03)80124-X [pii]
AID - 10.1016/s1389-1723(03)80124-x [doi]
PST - ppublish
SO  - J Biosci Bioeng. 2003;95(2):170-8. doi: 10.1016/s1389-1723(03)80124-x.