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    Author(s): Junjun Zhu; Liheng Chen; Rolland GleisnerJ.Y. Zhu
    Date: 2019
    Source: Fuel. 254. 8 p.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: Download Publication  (2.0 MB)


    Poplar wood was fractionated into a water-insoluble cellulosic solid (WIS) fraction and a spent liquor that contained mainly dissolved ignin and xylan using an acid hydrotrope, p-Toluenesulfonic acid (p-TsOH), at low temperatures (≤90 °C). Reaction-kinetics-based severities were used to scale-up fractionation using 100 g wood at p-TsOH concentration 50 wt% and 90 °C for 112 min. The WIS and spent iquor from a scale-up run were used to produce bioethanol and furfural, respectively. At 15% WIS loading (w/v), maximal ethanol concentration was 52.47 g/L with a fermentation efficiency of 68.3%. Direct dehydration of the virgin spent liquor resulted in a maximum furfural concentration of 5.44 g/L at 68.4% yield. Precipitating lignin in the spent liquor increased furfural concentration to 6.18 g/L and yield to 77.7%. These results demonstrate the potential of acid hydrotrope fractionation for forest biorefinery.

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    Zhu, Junjun; Chen, Liheng; Gleisner, Rolland; Zhu, J.Y. 2019. Co-production of bioethanol and furfural from poplar wood via low temperature (≤90 °C) acid hydrotropic fractionation (AHF). Fuel. 254. 8 p.


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    Lignocelluloses, acid hydrotropic fractionation, enzymatic hydrolysis and fermentation, biofuel, furfural

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