[PDF] acetic acid to methane bacteria

The methanogenic bacteria used acetic acid in a process which leads to high methane production. Acetic acid and hydrogen are produced during the acidification and acetogenic reaction, and these are substrates for methanogenic bacteria [22].
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  • How acetic acid can be converted to methane?

    Acetic acid is converted to methane by reaction with sodium hydroxide, and then undergoing decarboxylation.

  • How is acetate converted to methane?

    The second mechanism encompasses a two-step reaction in which acetate is first oxidized to H2 and CO2 and, with these products, subsequently converted to methane (15). This reaction is performed by acetate-oxidizing bacteria (often Clostridium spp.)

  • Which of the following bacteria are responsible for conversion of acetate to methane?

    Acetoclastic and methylotrophic methanogens reduce acetate and methyl compounds to methane and CO2.
  • In a biogas plant, the acetic acid concentration is a major component of the substrate as it determines the pH value, and this pH value correlates with the volume of biogas produced. Since it requires specialized laboratory equipment, the concentration of acetic acid in a biogas substrate cannot be measured on-line.
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