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Polymers 2017, 9(11), 599; https://doi.org/10.3390/polym9110599

Effect of Glycerol Pretreatment on Levoglucosan Production from Corncobs by Fast Pyrolysis

1
Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
2
Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266071, China
*
Authors to whom correspondence should be addressed.
Received: 30 September 2017 / Revised: 5 November 2017 / Accepted: 7 November 2017 / Published: 10 November 2017
(This article belongs to the Special Issue Polymers from Renewable Resources)
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Abstract

In this manuscript, glycerol was used in corncobs’ pretreatment to promote levoglucosan production by fast pyrolysis first and then was further utilized as raw material for chemicals production by microbial fermentation. The effects of glycerol pretreatment temperatures (220–240 °C), time (0.5–3 h) and solid-to-liquid ratios (5–20%) were investigated. Due to the accumulation of crystalline cellulose and the removal of minerals, the levoglucosan yield was as high as 35.8% from corncobs pretreated by glycerol at 240 for 3 h with a 5% solid-to-liquid ratio, which was obviously higher than that of the control (2.2%). After glycerol pretreatment, the fermentability of the recovered glycerol remaining in the liquid stream from glycerol pretreatment was evaluated by Klebsiella pneumoniae. The results showed that the recovered glycerol had no inhibitory effect on the growth and metabolism of the microbe, which was a promising substrate for fermentation. The value-added applications of glycerol could reduce the cost of biomass pretreatment. Correspondingly, this manuscript offers a green, sustainable, efficient and economic strategy for an integrated biorefinery process. View Full-Text
Keywords: glycerol pretreatment; levoglucosan; fast pyrolysis; lignocellulose glycerol pretreatment; levoglucosan; fast pyrolysis; lignocellulose
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Jiang, L.; Wu, N.; Zheng, A.; Wang, X.; Liu, M.; Zhao, Z.; He, F.; Li, H.; Feng, X. Effect of Glycerol Pretreatment on Levoglucosan Production from Corncobs by Fast Pyrolysis. Polymers 2017, 9, 599.

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