@article{fdi:010007508, title = {{M}ethane production from acetamide in an upflow anaerobic sludge-blanket reactor based on a synergistic association between an aerobic rod and methonogens}, author = {{G}uyot, {J}ean-{P}ierre and {F}errer, {H}enri and {F}lorina, {R}.}, editor = {}, language = {{ENG}}, abstract = {{A}cetamide degradation was investigated in a bench-scale upflow anaerobic sludge-blanket ({UASB}) reactor, successively fed with acetamide, acetate and acetamide, over a period of 343 days, at different hydraulic retention times. {T}he reactor was seeded with the sludge previously described, in which methanogenesis from acetamide was performed through a synergistic relationship between an acetamide-degrading, aerobic rod and methanogens. {W}hen the reactor was fed acetamide, the chemical oxygen demand ({COD}) removal efficiency was 86% at volumetric loads less than 1.18 kg {COD}/m3/day. {A}t higher volumetric loads, the efficiency decreased markedly, e.g. 50.9% at a volumetric organic load of 3.39 kg {COD}/m3/day with an accumulation of both acetamide and acetate. {T}he same reactor, when fed with acetate one day, reached a high {COD} removal (99%). {E}vidence of the inhibition of acetate degradation by acetamide is presented. {A}fter a long period (135 days) without feeding the reactor with acetamide, the sludge reactor was still capable of degrading acetamide when this substrate was supplied again. {I}t seems that the synergistic degradation of acetamide by aerobes and methanogens present in the {UASB} reactor sludge is stable over a long period (343 days), in spite of limiting concentrations of dissolved oxygen in the feed. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{FERMENTATION} ; {ANAEROBIOSE} ; {METHANOGENESE} ; {BIODEGRADATION} ; {ACETAMIDE}}, booktitle = {}, journal = {{A}pplied {M}icrobiology and {B}iotechnology}, volume = {43}, numero = {}, pages = {1107--1111}, ISSN = {0175-7598}, year = {1995}, DOI = {10.1007/{BF}00166933}, URL = {https://www.documentation.ird.fr/hor/fdi:010007508}, }