Ramirez F. auteur aut IRD Monroy O. auteur aut IRD Favela E. auteur aut IRD Guyot Jean-Pierre auteur aut IRD Cruz F. auteur aut IRD text bookSection eng text/pdf reformatted digital access 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) specialized FERMENTATION ANAEROBIOSE METHANOGENESE BACTERIE MILIEU DE CULTURE HYDROLYSE BIOMASSE ACETAMIDE 084FERMEN02 Finkelstein M. ed. edt IRD Davison B.H. ed. edt IRD 70-72 215-223 1998 Biotechnology for Fuels and Chemicals : Symposium, 9., Colorado Springs (USA), 1997/05/04-08 https://www.documentation.ird.fr/hor/fdi:010014123 [F B010014123] https://www.documentation.ird.fr/hor/fdi:010014123 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_49-50/010014123.pdf IRD - Base Horizon / Pleins textes 1998-07-16 2020-08-03 fdi:010014123 fre