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Utilization and biodegradation of starch stillage (distillery wastewater)
Krzywonos, M.; Cibis, E.; Miśkiewicz, T. & Ryznar-Luty, A.
Abstract
Stillage (distillery wastewater) is the main by-product
originating in distilleries, and its volume is
approximately 10 times that of ethanol produced. It is
not surprising that the utilization of the stillage raises
serious problems, and that many attempts have been
made all over the world to solve them. In Poland most of
the ethanol (about 90%) is produced from starch-based
feedstocks, i.e. grains and potatoes. Starch feedstocks
are widely used for spirit production also in other
European countries, as well as outside Europe. The
manuscript provides an overview of global fuel ethanol
production and information on methods used for
starch-based stillage biodegradation and utilization. The
methods presented in this paper have been classified
into two major groups. One of these includes the mode
of utilizing starch stillage, the other one comprises
methods, both aerobic and anaerobic, by which the
stillage can be biodegraded.
Keywords
biodegradation, distillery, ethanol, starch stillage, utilization
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