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- Title
Effect of Glycerol Pretreatment on Levoglucosan Production from Corncobs by Fast Pyrolysis.
- Authors
Liqun Jiang; Nannan Wu; Anqing Zheng; Xiaobo Wang; Ming Liu; Zengli Zhao; Fang He; Haibin Li; Xinjun Feng
- 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.
- Subjects
GLYCERIN; PYROLYSIS; FERMENTATION; KLEBSIELLA pneumoniae; MICROORGANISMS
- Publication
Polymers (20734360), 2017, Vol 9, Issue 11, p599
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym9110599