Paul Harris wrote: > ... Methanogens typically > use acetic acid, I don't know about lactic acid. Lactic acid can be converted to acetic acid by some acetogenic bacteria relatively easy, mostly to acetic acid and propionic acid (but the latter is not so easily degradable). But acetogenic bacteria need relative high pH (pH 4 to 6). So at lower pH level it will not be degraded as it will hardly, too, if propionic acid accumulates. Greetings Ernst Murnleitner Digestion List Archives: http://www.crest.org/discussion/digestion/200202/ Digestion List Moderator: Paul Harris, paul.harris@adelaide.edu.au http://www.roseworthy.adelaide.edu.au/~pharris List-Post: <mailto:digestion@crest.org> List-Help: <mailto:digestion-help@crest.org> List-Unsubscribe: <mailto:digestion-unsubscribe@crest.org> List-Subscribe: <mailto:digestion-subscribe@crest.org> Other Digestion Events and Information: http://www.bioenergy2002.org http://crest.org/discussiongroups/resources/biomass/biogas/BIOGASMK.pdf http://www.crest.org/articles/static/1/1010424940_7.html Beginners Tour of Biogas http://WWW.roseworthy.adelaide.edu.au/~pharris/biogas/beginners
