Biomass Feasibility Project Final Report - Xcel Energy

Agricultural Processing Residues
Waste streams, like leaves, stems, stalks, roots, shells, pits, etc., found typically at processing
plants. Specific agricultural processing residues listed in BioPET are:
Feedstocks include:
Ethanol DDGs, Ethanol Feed, Ethanol Oil, Glycerol, Soybean Hulls, Soybean Meal,
Soybean Oil, Sugar Beet Molasses, Sugar Beet Pulp, Sugar Beet Tailings, Wheat Flour, and
Wheat Midds
Residues from agricultural processing are the fourth largest biomass category. Annual residues
from crop processing contain approximately 165,000 billion BTU. Soybean meal is the largest of
these (38%), followed by ethanol DDGs (21%), and soybean oil (17%). Other contributors are
wheat flour (13%) sugar beet pulp (4%), soybean hulls (3%), and wheat midds (3%).
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Identifying Effective Biomass Strategies:
Quantifying Minnesota’s Resources and Evaluating Future Opportunities