[Stoves] papaya as feedstock for biogas

[Kevin Chisholm]

Dear Peter

Thanks for your comments.

As I understand it, ethan can only transform to vinegar under aerobic 
conditions... no air, no vinegar. Also, I think if an ethanol solution 
is aerated, it will turn to vinegar, regardless of ethanol 
concentration. (Presuming say 2 to 20% ethanol, and inoculation with the 
appropriate "biological converters.")

I don't know the chemistry of the transformation from Vinegar to 
Methane. However, there is the problem of the aerobic environment 
necessary to convert ethanol to vinegar.

Best wishes,

Kevin

Peter Singfield wrote:
> Hi Kevin;
> 
> Good question!!
> 
> AD probably has the good answer to -- but here is something i observed in
> actual very small scale experiments done here some years back -- the
> "Chee-Cha" project - - as you probably recall.
> 
> Cane juice raw ferments to 5% cane beer -- then it goes vinegar -- then the
> vinegar goes methane.
> 
> Cane juice boiled/concentrated goes to 12% cane wine -- 
> 
> That is then rduced to 6% by addition of water -- then mother of vinegar
> added -- quickly turns to vinegar -- but the vinegar stays stable -- as
> long as the container you keep it in is ventilated to atmospher - -and you
> feed it small amounts of 12% wine every few months.
> 
> I have very delicious 3 year old cane vingar now -- miraculous for one's
> digestion -- though the giant ameba like "mother" floating in it does look
> very repulsive -- and many people refue to drink of this vinegar when I
> show then the vats of it -- due to all the slimy vinegar eels swiming in it.
> 
> It is as that point that I insert a dipper -- decanting some of the csytal
> clear vinegar product -- dump some on the cement floow where is fizzes
> ferociously -- then take a good sip -- bringing tears to my eyes -- and go:
> 
> Ahh -- how delicious this indeed is!!
> 
> Course -- much smarter modern people would never drink anything so
> "unsterile" -- instead they prefer their white store bought vinegar --
> which is watered down acedic anhydride synthesised from pertoluem refinery
> residues -- and totally bactery and worms free.
> 
> You might want to search this word on "google" though:
> 
> "Probiotics"
> 
> If you all sense I am laughing at modern man's "ignorance" -- well you are
> right!!
> 
> And let's not argue the point now -- lets just observe who lives longer and
> happier -- eh??
> 
> Anyway Kevin -- low sugar solutions go "beer" -- "vinegar" -- then methane.
> 
> And it all depends on the bacteris present and available.
> 
> If you want to learn more about natural live culture vinegar for your
> health benifits:
> 
> http://www.bragg.com/products/applecidervinegar.html
> 
> AD -- do people in India know the beinifts of natural vinegar??
> 
> And one word of advice AD -- if India goes on to emulate American style
> medicine -- American style diet you no longer will have an over population
> problem in not time at all.
> 
> Peter/Belize
>