Environmental Engineering Reference
In-Depth Information
Table 2.4 Animal by-products suitable as feedstock for biogas production,
according to the ABPR
Examples of animal by-products
suitable for AD
Required pre-treatment
according to ABPR
ABPR
category
Manure and digestive tract content
from slaughterhouse
Milk and colostrum
Perished animals
Slaughtered animals, not intended for
human consumption
Meat-containing wastes from foodstuff
industry
Slaughterhouse wastes from animals
fit for human consumption
Catering waste, except for waste from
international transport (flights, trains,
etc.)
No pre-treatment
Category 2
Category 2
Category 2
Category 2
Category 3
Category 3
Category 3
No pre-treatment
Pressure sterilization
Pressure sterilization
Pasteurization
Pasteurization
In accordance with national
regulation
manure with organic wastes results in increased process stability, due to less
sensitivity to inhibitors like ammonia and sulfide. Co-digestion of industrial
wastes therefore has a positive effect on the economic sustainability of a
biogas plant through higher methane yields, improved process stability and
supplementary income from the so-called 'gate fees' paid by industries to the
biogas plant for the AD treatment of their waste.
Animal by-products not intended for human consumption
Digestible organic wastes comprise many types of organic wastes and by-
products of animal origin. The utilization, treatment and disposal of all
animal by-products not intended for human consumption is regulated in
Europe by Regulation 1069/2009 (EC, 2009), also known as the European
Animal By-products Regulation (ABPR), which is a revised and amended
version of the earlier Regulation 2002/1774/EC (EC, 2002). Among other
things, the ABPR lists the categories and types of animal by-products not
suitable for human consumption, that are allowed to be used as AD
feedstock in EU biogas plants and stipulates the mandatory hygienic
measures and the health rules for their handling, treatment and further
utilization, as summarized in Table 2.4.
￿ ￿ ￿ ￿ ￿ ￿
By-products from biorefineries and the biofuels industry
Biofuel production facilities - and, in the future, the biorefineries that are
under development today - are likely to accumulate very large amounts of
organic by-products, almost all suitable for AD. In grain-processing bio-
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