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Chemie Ingenieur Technik
Article . 2012 . Peer-reviewed
License: Wiley Online Library User Agreement
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Aceton‐Butanol‐Ethanol (ABE)‐Fermentation von Organosolv‐Holzhydrolysaten

Authors: S. Wiesen; N. Tippkötter; A. Duwe; R. Ulber;

Aceton‐Butanol‐Ethanol (ABE)‐Fermentation von Organosolv‐Holzhydrolysaten

Abstract

Die Losungsmittelherstellung durch Clostridien konnte wirtschaftlich nicht mit der chemischen Synthese von Losungsmitteln auf Erdolbasis konkurrieren und wurde in den fruhen 1960er Jahren nahezu vollstandig eingestellt. Das Interesse an nachwachsenden Rohstoffen hat in den letzten Jahren zu einem Wiederaufleben der ABE-Fermentation gefuhrt. Aufgrund seiner hoheren Energiedichte im Vergleich zu Ethanol ist Biobutanol als Energietrager besonders interessant und bietet sich z. B. als Produkt einer Bioraffinerie der 2. Generation an. Fur die beschriebenen Experimente wird durch das Organosolv-Verfahren aufgeschlossenes Buchenholz verwendet. Der Faserstoff wird mithilfe von CTec2-Enzymen hydrolysiert, wobei der erhaltene Uberstand eine Glucosekonzentration von 66 g L aufweist. Auf der Basis dieses Materials konnen mit Clostridium acetobutylicum Butanol-Ausbeuten erzielt werden, die mit denen unter Verwendung von reinen Zuckern vergleichbar sind. Dem Problem der hohen Produktinhibierung wird mit einer Insitu-Produktaufarbeitung begegnet. Mithilfe von Losungsmittel-impragnierten Partikeln (SIPs) kann die Produktausbeute drastisch gesteigert werden, indem die gebildeten Losungsmittel durch das auf dem Partikel impragnierte Losungsmittel wahrend der Fermentation extrahiert werden. Zudem wird hierdurch die weitere Produktaufarbeitung stark vereinfacht.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze