Kratko priopćenje
https://doi.org/10.2478/10004-1254-62-2011-2104
High-Risk Biodegradable Waste Processing by Alkaline Hydrolysis
Sanja Kalambura
; University of Applied Science Velika Gorica, Croatia
Neven Voća
; Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
Tajana Krička
; Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
Zoran Šindrak
; Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
Ana Špehar
; Agroproteinka d.d., Zagreb, Croatia
Dejan Kalambura
; BBS Projekt, Zagreb, Croatia
Sažetak
Biodegradable waste is by defi nition degraded by other living organisms. Every day, meat industry produces large amounts of a specifi c type of biodegradable waste called slaughterhouse waste. Traditionally in Europe, this waste is recycled in rendering plants which produce meat and bone meal and fat. However, feeding animals with meat and bone meal has been banned since the outbreaks of bovine spongiform encephalopathy (BSE). In consequence, new slaughterhouse waste processing technologies have been developed, and animal wastes have now been used for energy production. Certain parts of this waste, such as brains and spinal cord, are deemed high-risk substances, because they may be infected with prions.
Their treatment is therefore possible only in strictly controlled conditions. One of the methods which seems to bear acceptable health risk is alkaline hydrolysis. This paper presents the results of an alkaline hydrolysis effi ciency study. It also proposes reuse of the obtained material as organic fertiliser, as is suggested by the analytical comparison between meat and bone meal and hydrolysate.
Ključne riječi
cow brain; BSE; organic fertilisers; slaughterhouse waste; rendering plants; spinal cord
Hrčak ID:
71777
URI
Datum izdavanja:
23.9.2011.
Posjeta: 3.094 *