title: Pyrolytic characteristics of biomass acid hydrolysis residue rich in lignin.
abstract: 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 °C to 850 °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 °C. Furthermore, CAHR char reactivity performed better under steam atmosphere than under CO2 atmosphere.
authors: Key Laboratory of Renewable Energy and Gas Hydrate, CAS, Guangzhou 510640, China.
authors: Yanqin
authors: Y
authors: Huang
authors: Zhiguo
authors: Z
authors: Wei
authors: Xiuli
authors: X
authors: Yin
authors: Chuangzhi
authors: C
authors: Wu
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002245:Carbon Dioxide / Q000032:analysis; D002606:Charcoal / Q000737:chemistry; D006868:Hydrolysis / Q000187:drug effects; D008031:Lignin / Q000378:metabolism*; D028223:Pinus / Q000737:chemistry; D013464:Sulfuric Acids / Q000494:pharmacology*; D013696:Temperature; D013818:Thermogravimetry; D003313:Zea mays / Q000737:chemistry
chemical_list: D013464:Sulfuric Acids; C540010:biochar; D002245:Carbon Dioxide; D002606:Charcoal; D008031:Lignin; C033158:sulfuric acid