Alcaligenes faecalis kw-a biofilm for denitrification of nitrate-rich effluent.
Indian J Exp Biol
;
2005 Jun; 43(6): 542-7
Artigo
em Inglês
| IMSEAR
| ID: sea-61755
ABSTRACT
Alcaligenes faecalis kw-A selected for possessing good denitrification efficiency was used for biofilm development. The biofilm could be developed on a glass surface within 12 hr when 5%, Ix 10(8) cells/ml was used as inoculum. The microcolonies were seen in 6 hr and glycocalyx in 9 hr stage. At 24 hr the biofilm was developed fully and hence was visualised as dense mass. The biofilm protein content showed 48.5% increase in shake flask than in static condition. The exopoplymer is produced in larger amounts in biofilm as compared to the suspended cells. Also, its amount was more by 43% in the biofilm produced in shake flask condition than in static condition. The biofilm could remove 95% nitrate from nitrate-rich effluent in a bench-scale process in 36 hr. The attached growth technique demonstrated here can be utilised to study the effect of favourable as well as adverse conditions on the denitrification efficiency of a culture. The ultimate application of a denitrifying biofilm would be in attached growth or biofilm reactor.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Peptonas
/
Polissacarídeos
/
Temperatura
/
Fatores de Tempo
/
Bioquímica
/
Bovinos
/
Microscopia de Contraste de Fase
/
Biofilmes
/
Glicocálix
/
Alcaligenes faecalis
Idioma:
Inglês
Revista:
Indian J Exp Biol
Ano de publicação:
2005
Tipo de documento:
Artigo
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