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Microbiologie de la Digestion Anaérobie - AILE

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Acidose : Que se passe-t-il ?<br />

Signes annonciateurs<br />

Accumu<strong>la</strong>tion:<br />

• H 2 et CO 2<br />

• aci<strong>de</strong>s organiques<br />

Chute:<br />

•pH<br />

•CH 4, m 3 biogaz<br />

Polymères Complexes<br />

Carbohydrates, Lipids, Proteins, Ac nucléiques<br />

Hydrolysis<br />

monomères, dimères<br />

sucres, aci<strong>de</strong>s gras branchés, a.a.,<br />

Acidogenesis<br />

AGV : Ac., Prop., But,<br />

Alcools, Acetone, CO 2 , H 2<br />

Acetogenesis<br />

Acetate H 2, CO 2<br />

Methanogenesis<br />

CH 4 + CO 2<br />

Bact.Hydrolytiques<br />

Bact. Acidogènes<br />

Bact. Acetogènes<br />

Bact. Methanogènes

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