丁醇
萃取(化学)
超临界二氧化碳
化学
超临界流体萃取
超临界流体
水溶液
酒
己醇
色谱法
溶解度
二氧化碳
剥离(纤维)
2-丁醇
有机化学
材料科学
乙醇
复合材料
作者
Geoffrey A. Tompsett,Jason T. Boock,Cameron Kevin DiSpirito,Eric Stolz,David Ryan Knutson,Allison Gail Rivard,Mark Robert Overdevest,Chelsea N. Conlon,Kristala L. J. Prather,Janelle R. Thompson,Michaël T. Timko
标识
DOI:10.1002/ente.201700626
摘要
Abstract New biotechnologies have been developed to produce higher alcohols, including various isomers of butanol, pentanol, and hexanol. The thermodynamic properties of higher alcohols—i.e., low volatility and moderate water solubility—make them good candidates for extraction using supercritical carbon dioxide (scCO 2 ). Here, we studied semi‐batch extraction of several representative higher alcohols, including n ‐butanol, n ‐pentanol, and n ‐hexanol from dilute aqueous solutions using scCO 2 , measuring the initial extraction rates and extraction efficiencies, where the extraction efficiency was defined as the grams of alcohol recovered per gram of scCO 2 . In all cases, the extraction kinetics were well described by a simple first‐order disappearance model and the extraction rates were much greater than the published butanol bioproduction rates. Quantitatively, the initial extraction rates and efficiencies, respectively, for both n ‐hexanol and n ‐pentanol were 1.6±0.2 and 1.3±0.1 times greater than that for n ‐butanol. These results were analyzed for semi‐continuous alcohol recovery and compared with previous literature on butanol gas stripping to evaluate the competitiveness of the scCO 2 separation strategy.
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