[Digestion] AD of rabbit manure

[Peter Allison]

Hi All,
I'm at present digesting rabbit manure in a one ton pilot plant to assess
gas output and the quality of the spent supernatant. I introduced about
10kgs of calcium hydroxide Ag-lime to increase pH after acidification. The
plant is producing plenty of methane and biological activity but also plenty
of foam, similar to what they use for extinguishing liquid fuel fires. Does
anyone know of an organic based de-bubbling fluid I could use to collapse
the foam discharge? It's fouling my gas lines and creating havoc.
Stand back! I think she is ready to blow!
Help!
PA