DIG-L: papers on digestion

[Stuart Hoenig <hoenigc@azstarnet.com>]

Len Walde
digestion@crest.org

I saw your request
for papers on digestion, there are many of them, I assume you mean
anaerobic digestion. I enclose what we did to show the system worked. The
County and the City were not interested but some big systems are being
built in CA.

I don’t know where you are located but I might note that the CO2 you get
from the reaction can be used to soften hard water. In fact a farm in AZ
has done it for 30 years, you bubble the CO2 through the hard water it
drops from pH=8.6 to 7.2.

The CH4 can be used for heating or, if separated from the CO2 and dried,
it works very well as a fuel for autos. Let me know if you need more
help, food, green waste and wastepaper work fine as long as you keep the
mixture stirred up. I can tell you how to do that, nothing mechanical is
needed.


Prof. Stuart A. Hoenig, P.E., Ph.D
Dept. of Agricultural & Biosystems Engineering
University of Arizona, Tucson, AZ  85721-0038
Tel: 520-887-3815
Fax: 520-887-9727
hoenig@ece.arizona.edu
hoenigc@azstarnet.com

Anaerobic Digestion of Garbage, Animal Waste, & Sewage.tif

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