Co-production of bioethanol and furfural from poplar wood via low temperature (≤ 90 °C) acid hydrotropic fractionation (AHF)

FUEL

卷:254

Article

Zhu, Junjun^1,2  Chen, Liheng^2,3  Gleisner, Rolland²  Zhu, J. Y.² 

[1] Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, 159 Longpan Rd, Nanjing 210037, Jiangsu, Peoples R China

[2] Forest Serv, USDA, Forest Prod Lab, Madison, WI 53726 USA

[3] Jinan Univ, Guangdong Higher Educ Inst, Dept Biomed Engn, Key Lab Biomat, Guangzhou, Guangdong, Peoples R China

关键词: Lignocelluloses;    Acid hydrotropic fractionation;    Enzymatic hydrolysis and fermentation;    Biofuel;    Furfural;   

DOI  :  10.1016/j.fuel.2019.05.155

来源: Elsevier

【 摘 要 】

Poplar wood was fractionated into a water-insoluble cellulosic solid (WIS) fraction and a spent liquor that contained mainly dissolved lignin and xylan using an acid hydrotrope, p-Toluenesulfonic acid (p-TsOH), at low temperatures (<= 90 degrees C). Reaction-kinetics-based severities were used to scale-up fractionation using 100 g wood at p-TsOH concentration 50 wt% and 90 degrees C for 112 min. The WIS and spent liquor 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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