Ramirez F., Monroy O., Favela E., Guyot Jean-Pierre, Cruz F. (1998). Acetamide degradation by a continuous-fed batch culture of Bacillus sphaericus. In :
Finkelstein M. (ed.), Davison B.H. (ed.). Biotechnology for fuels and chemicals. 70-72, p. 215-223. Biotechnology for Fuels and Chemicals : Symposium, 9., Colorado Springs (USA), 1997/05/04-08. ISSN 0273-2289.
Titre du document
Acetamide degradation by a continuous-fed batch culture of Bacillus sphaericus
Année de publication
1998
Type de document
Partie d'ouvrage
Auteurs
Ramirez F., Monroy O., Favela E., Guyot Jean-Pierre, Cruz F.
In
Finkelstein M. (ed.), Davison B.H. (ed.), Biotechnology for fuels and chemicals
Source
1998,
p. 215-223 ISSN 0273-2289
Colloque
Biotechnology for Fuels and Chemicals : Symposium, 9., Colorado Springs (USA), 1997/05/04-08
The methanogenesis of acetamide occurs through a two-step reaction in methanogenic sludges. First, acetamide is hydrolyzed to acetate and ammonia by a strict aerobic bacterium (Bacillus sphaericus), then acetate is used by Bacillus as carbon source or converted to methane by methanogens. In this work, the kinetics of acetamide degradation by B. sphaericus was studied in a continuous reactor with biomass accumulation, fed with acetamide. The oxygen supplied was dissolved in the feed (6.4 mg/L) to resemble conditions in an anaerobic wastewater treatment reactor. A reaction in series model (acetamide -> acetate -> biomass) was used to find the kinetic parameters. Results show that B. sphaericus can hydrolyze acetamide in a second-order reaction with K1 = 1.1 L/g/d, implying that the amount of biomass determines the rate and that no reaction will take place at specific loading rates greater than 35 gAm/gX/d. (Résumé d'auteur)
Plan de classement
Anaérobies [084FERMEN02]
Descripteurs
FERMENTATION ; ANAEROBIOSE ; METHANOGENESE ; BACTERIE ; MILIEU DE CULTURE ; HYDROLYSE ; BIOMASSE ; ACETAMIDE
