Lignocellulosic biorefinery: Process integration of hydrolysis and fermentation (SSF process)

  • The aim of the present work is the process integration and the optimization of the enzymatic hydrolysis of wood and the following fermentation of the products to ethanol. The substrate is a fiber fraction obtained by organosolv pre-treatment of beech wood. For the ethanol production, a co-fermentation by two different yeasts (Saccharomyces cerevisiae and Pachysolen tannophilus) was carried out to convert glucose as well as xylose. Two approaches has been followed: 1. A two step process, in which the hydrolysis of the fiber fraction and the fermentation to product are separated from each other. 2. A process, in which the hydrolysis and the fermentation are carried out in one single process step as simultaneous saccharification and fermentation (SSF). Following the first approach, a yield of about 0.15 g ethanol per gram substrate can be reached. Based on the SSF, one process step can be saved, and additionally, the gained yield can be raised up to 0.3 g ethanol per gram substrate.

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Metadaten
Author:Sebastian Poth, Magaly Monzon, Nils TippkötterORCiD, Roland UlberORCiD
DOI:https://doi.org/10.1515/HF.2011.114
Parent Title (German):Holzforschung
Publisher:De Gruyter
Place of publication:Berlin
Document Type:Article
Language:English
Year of Completion:2011
Volume:65
Issue:5
First Page:633
Last Page:637
Note:
11th EWLP, Hamburg, Germany, August 16–19, 2010
Link:https://www.degruyter.com/view/j/hfsg.2011.65.issue-5/hf.2011.114/hf.2011.114.xml
Zugriffsart:campus
Institutes:FH Aachen / Fachbereich Chemie und Biotechnologie
collections:Verlag / De Gruyter