David,
Aerobic digestion is the breakdown of organic material with
oxygen-consuming bugs, while anaerobic digestion uses bugs that don't like
oxygen, and so it requires an air-tight container. Ideally, aerobic
digestion breaks organics into carbon dioxide and water, while anaerobic
digestion also produces methane.
If feedlots were considered a point source, then they would have to treat
the manure, and their costs would skyrocket. But I would advocate for the
proper use of manure rather than trying to make it disappear (and sending
more greenhouse gases into the atmosphere).
best wishes,
Mark
At 07:29 AM 05/11/2000 -0400, David Drexler wrote:
>
>Could someone please tell me the basic differences between anaerobic and
>aerobic digestion. Why are these systems not in use to solve the
>manures and waste problem in the US?
>Thanks
>David D/
>
>
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Mark Muller
Institute for Agriculture and Trade Policy
2105 First Avenue South
Minneapolis, Minnesota 55404
phone: (612) 870-3420
fax: (612) 870-4846
email: mmuller@iatp.org
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