Journal
BIORESOURCE TECHNOLOGY
Volume 103, Issue 1, Pages 470-476Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.10.027
Keywords
Acid hydrolysis residue; Pyrolysis; TGA; XRD; Char reactivity
Funding
- National Natural Sciences Foundation of China [50876109]
- National Key Technology Research and Development Program of China [2011BAD22B06]
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Pyrolytic characteristics of acid hydrolysis residue (AHR) of corncob and pinewood (CAHR, WAHR) were investigated using a thermo-gravimetric analyzer (TGA) and a self-designed pyrolysis apparatus. Gasification reactivity of CAHR char was then examined using TGA and X-ray diffractometer. Result of TGA showed that thermal degradation curves of AHR descended smoothly along with temperature increasing from 150 degrees C to 850 degrees C, while a sharp mass loss stage for original biomass feedstock (OBF) was observed. Char yield from AHR (42.64-30.35 wt.%) was found to be much greater than that from OBF (26.4-19.15 wt.%). In addition, gasification reactivity of CAHR char was lower than that of corncob char, and there was big difference in micro-crystallite structure. It was also found that CAHR char reactivity decreased with pyrolysis temperature, but increased with pyrolysis heating rate and gasification temperature at 850-950 degrees C. Furthermore, CAHR char reactivity performed better under steam atmosphere than under CO(2) atmosphere. (C) 2011 Elsevier Ltd. All rights reserved.
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