Journal article
Separation, hydrolysis and fermentation of pyrolytic sugars to produce ethanol and lipids
Bioresource technology, Vol.101(24), pp.9688-9699
2010
Handle:
https://hdl.handle.net/2376/115413
PMID: 20708928
Abstract
This paper describes a new scheme to convert anhydrosugars found in pyrolysis oils into ethanol and lipids. Pyrolytic sugars were separated from phenols by solvent extraction and were hydrolyzed into glucose using sulfuric acid as a catalyst. Toxicological studies showed that phenols and acids were the main species inhibiting growth of the yeast
Saccharomyces cerevisiae. The sulfuric acids, and carboxylic acids from the bio-oils, were neutralized with Ba(OH)
2. The phase rich in sugar was further detoxified with activated carbon. The resulting aqueous phase rich in glucose was fermented with three different yeasts:
S. cerevisiae to produce ethanol, and
Cryptococcus curvatus and
Rhodotorula glutinis to produce lipids. Yields as high as 0.473
g ethanol/g glucose and 0.167
g lipids/g sugar (0.266
g ethanol equivalent/g sugar), were obtained. These results confirm that pyrolytic sugar fermentation to produce ethanol is more efficient than for lipid production.
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Details
- Title
- Separation, hydrolysis and fermentation of pyrolytic sugars to produce ethanol and lipids
- Creators
- Jieni Lian - Biological Systems Engineering Department, Washington State University, WA 99164, USAShulin Chen - Biological Systems Engineering Department, Washington State University, WA 99164, USAShuai Zhou - Biological Systems Engineering Department, Washington State University, WA 99164, USAZhouhong Wang - Biological Systems Engineering Department, Washington State University, WA 99164, USAJames O’Fallon - Biological Systems Engineering Department, Washington State University, WA 99164, USAChun-Zhu Li - Curtin Center for Advanced Energy Science and Engineering, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, AustraliaManuel Garcia-Perez - Biological Systems Engineering Department, Washington State University, WA 99164, USA
- Publication Details
- Bioresource technology, Vol.101(24), pp.9688-9699
- Academic Unit
- Biological Systems Engineering, Department of; Chemistry, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547994401842
- Language
- English
- Resource Type
- Journal article