Ethanol production from maize silage as lignocellulosic biomass in anaerobically digested and wet-oxidized manure
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- 作者：Piotr Oleskowicz-Popiel ; Przemyslaw Lisiecki ; Jens Bo Holm-Nielsen ; Anne Belinda Thomsen ; Mette Hedegaard Thomsen
- 关键词：Bioethanol ; Wet-oxidation ; SSF ; Anaerobically digested manure ; Maize silage
- 刊名：Bioresource Technology
- 出版年：2008
- 出版时间：September 2008
- 年：2008
- 卷：99
- 期：13
- 页码：5327-5334
- 全文大小：292 K
文摘
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 2 l bioreactors. Wet oxidation performed for 20 min at 121 °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.