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Characterization of Bamboo after Ionic Liquid-H2O Pretreatment for the Pyrolysis Process

Articles

Journal/Conference:

BIORESOURCES

Language:

English

Author:

Chen Qiyu; Endo Takumi; Wang Qingyue

Year:

2015

Volume:

10

Issue:

2

Pages:

2797-2808

Keywords:

Bamboo; Cellulose; Pretreatment; Ionic liquid - H2O mixture; Pyrolysis

Bamboo (Phyllostachys edulis) samples pretreated with ionic liquid (ILs)-H2O mixtures were studied concerning their application in the pyrolysis process. [Bmim]Cl-H2O, [Bmim]BF4-H2O, [Bmim]HSO4-H2O, and [Bmim]Ac-H2O mixture systems were used in the pretreatment process. The characteristics of pretreated bamboo were analyzed, as was cellulose extracted from ILs-H2O pretreated bamboo. The enrichment of cellulose (a-cellulose) in pretreated bamboo was achieved. The amount of char resulting from the pyrolysis of the [Bmim] Ac-H2O pretreated sample (20.1 wt%) was lower than the untreated bamboo sample (24.2 wt%) at 900 degrees C. A greater proportion of the pretreated bamboo samples was converted into gas products and/or liquids. The pretreated cellulose pyrolysis process could proceed more easily than processing untreated samples due to the disordered crystalline cellulose structure and the decrease in molecular weight.