期刊
CHEMSUSCHEM
卷 7, 期 6, 页码 1662-1668出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201301259
关键词
biomass; biosynthesis; flash pyrolysis; gas chromatography; renewable resources
资金
- Phillips 66 Company
- National Science Foundation
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1133319] Funding Source: National Science Foundation
This study explores the separate recovery of sugars and phenolic oligomers produced during fast pyrolysis with the effective removal of contaminants from the separated pyrolytic sugars to produce a substrate suitable for fermentation without hydrolysis. The first two stages from a unique recovery system capture heavy ends, mostly water-soluble sugars and water-insoluble phenolic oligomers. The differences in water solubility can be exploited to recover a sugar-rich aqueous phase and a phenolic-rich raffinate. Over 93wt% of the sugars is removed in two water washes. These sugars contain contaminants such as low-molecular-weight acids, furans, and phenols that could inhibit successful fermentation. Detoxification methods were used to remove these contaminants from pyrolytic sugars. The optimal candidate is NaOH overliming, which results in maximum growth measurements with the use of ethanol-producing Escherichia coli.
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