Ethanol production from maize silage as lignocellulosic biomass in anaerobically digested and wet-oxidized manure.
In this communication, pretreatment of the anaerobically digested (AD) manure and the application of the pretreated AD manure as liquid medium for the simultaneous saccharification and fermentation (SSF) were described. Furthermore, fermentation of pretreated maize silage and wheat straw was investigated using 2l bioreactors. Wet oxidation performed for 20 min at 121 degrees C was found as the most suitable pretreatment conditions for AD manure. High ammonia concentration and significant amount of macro- and micro-nutrients in the AD manure had a positive influence on the ethanol fermentation. No extra nitrogen source was needed in the fermentation broth. It was shown that the AD manure could successfully substitute process water in SSF of pretreated lignocellulosic fibres. Theoretical ethanol yields of 82% were achieved, giving 30.8 kg ethanol per 100 kg dry mass of maize silage.
Oleskowicz-Popiel
Piotr
P
Biosystems Department, Risoe National Laboratory, Technical University of Denmark, DTU, Frederiksborgvej 399, 4000 Roskilde, Denmark. piotr.o.popiel@risoe.dk
Lisiecki
Przemyslaw
P
Holm-Nielsen
Jens Bo
JB
Thomsen
Anne Belinda
AB
Thomsen
Mette Hedegaard
MH
D000693:Anaerobiosis; D000821:Animal Feed; D000818:Animals; D018533:Biomass; D019149:Bioreactors; D000431:Ethanol / Q000378:metabolism*; D008031:Lignin; D008372:Manure; D010084:Oxidation-Reduction; D012820:Silage; D003313:Zea mays / Q000378:metabolism*
D008372:Manure; C036909:lignocellulose; D000431:Ethanol; D008031:Lignin