possible integration of biogas+bioethanol processing - bioenergybaltic

Real life example
The principles:
-About one-third of the corn—the starch—is converted
into ethanol, and another one-third into thin stillage,
which is used in the anaerobic digesters for heat and
biogas. The other one-third, a combination of protein,
oils, and fibers called distiller's grain, is usually sold as
feed for cattle. However, this grain is wet when it exits
the ethanol plant, and traditionally equipment costing
several million dollars must be used to dry it before
transport in order to prevent spoilage
-Corn byproducts, including cellulose from the corn
stalks, also go into the biogas brew.
- the water pollution problems are solved by removing
manure from feedlots
How can we improve the system?
How can we increase sustainability of the process?
http://www.e3biofuels.com
23