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Molecules 2017, 22(2), 285; doi:10.3390/molecules22020285

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

Agro-Environmental Protection Institute, Chinese Academy of Agricultural Sciences, No. 31, Fukang Road, Nankai District, Tianjin 300191, China
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Academic Editors: Thomas J. Farmer and James H. Clark
Received: 10 January 2017 / Revised: 8 February 2017 / Accepted: 9 February 2017 / Published: 14 February 2017
(This article belongs to the Special Issue Chemicals from Biomass)
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Abstract

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. View Full-Text
Keywords: biomass; agricultural residue; value-added chemical; glucose; levulinic acid; biorefinery biomass; agricultural residue; value-added chemical; glucose; levulinic acid; biorefinery
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MDPI and ACS Style

Su, J.; Shen, F.; Qiu, M.; Qi, X. High-Yield Production of Levulinic Acid from Pretreated Cow Dung in Dilute Acid Aqueous Solution. Molecules 2017, 22, 285.

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