High-Yield Production of Levulinic Acid from Pretreated Cow Dung in Dilute Acid Aqueous Solution

文献类型： 外文期刊

第一作者： Su, Jialei

作者： Su, Jialei;Shen, Feng;Qiu, Mo;Qi, Xinhua

作者机构：

关键词： biomass;agricultural residue;value-added chemical;glucose;levulinic acid;biorefinery

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

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年卷期：

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收录情况： SCI

摘要： Agricultural waste cow dung was used as feedstock for the production of a high value-added chemical levulinic acid (LA) in dilute acid aqueous solutions. A high LA yield of 338.9 g/kg was obtained from the pretreated cow dung, which was much higher than that obtained from the crude cow dung (135 g/kg), mainly attributed to the breakage of the lignin fraction in the lignocellulose structure of the cow dung by potassium hydroxide (KOH) pretreatment, and thus enhanced the accessibility of cow dung to the acid sites in the catalytic reaction. Meanwhile, another value-added chemical formic acid could be obtained with a yield of ca. 160 g/kg in the process, implying a total production of ca. 500 g/kg yield for LA and formic acid from the pretreated cow dung with the proposed process. The developed process was shown to be tolerant to high initial substrate loading with a satisfied LA yield. This work provides a promising strategy for the value-increment utilization of liglocellulosic agricultural residues.

分类号： O62

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