TY - JOUR
T1 - Characterization of a bio-oil from pyrolysis of rice husk by detailed compositional analysis and structural investigation of lignin
AU - Lu, Yao
AU - Wei, Xian Yong
AU - Cao, Jing Pei
AU - Li, Peng
AU - Liu, Fang Jing
AU - Zhao, Yun Peng
AU - Fan, Xing
AU - Zhao, Wei
AU - Rong, Liang Ce
AU - Wei, Yan Bin
AU - Wang, Shou Ze
AU - Zhou, Jun
AU - Zong, Zhi Min
PY - 2012/7
Y1 - 2012/7
N2 - Detailed compositional analysis of a bio-oil (BO) from pyrolysis of rice husk was carried out. The BO was extracted sequentially with n-hexane, CCl 4, CS 2, benzene and CH 2Cl 2. In total, 167 organic species were identified with GC/MS in the extracts and classified into alkanes, alcohols, hydroxybenzenes, alkoxybenzenes, dioxolanes, aldehydes, ketones, carboxylic acids, esters, nitrogen-containing organic compounds and other species. The benzene ring-containing species (BRCCs) were attributed to the degradation of lignin while most of the rests were derived from the degradation of cellulose and hemicellulose. Along with guaiacyl and p-hydroxyphenyl units as the main components, a new type of linkage was suggested, i.e., C ar-CH 2-C ar in 4,4'-methylenebis(2,6-dimethoxyphenol). Based on the species identified, a possible macromolecular structure of the lignin and the mechanism for its pyrolysis are proposed. The BO was also extracted with petroleum ether in ca. 17.8% of the extract yield and about 82.1% of the extracted components are BRCCs.
AB - Detailed compositional analysis of a bio-oil (BO) from pyrolysis of rice husk was carried out. The BO was extracted sequentially with n-hexane, CCl 4, CS 2, benzene and CH 2Cl 2. In total, 167 organic species were identified with GC/MS in the extracts and classified into alkanes, alcohols, hydroxybenzenes, alkoxybenzenes, dioxolanes, aldehydes, ketones, carboxylic acids, esters, nitrogen-containing organic compounds and other species. The benzene ring-containing species (BRCCs) were attributed to the degradation of lignin while most of the rests were derived from the degradation of cellulose and hemicellulose. Along with guaiacyl and p-hydroxyphenyl units as the main components, a new type of linkage was suggested, i.e., C ar-CH 2-C ar in 4,4'-methylenebis(2,6-dimethoxyphenol). Based on the species identified, a possible macromolecular structure of the lignin and the mechanism for its pyrolysis are proposed. The BO was also extracted with petroleum ether in ca. 17.8% of the extract yield and about 82.1% of the extracted components are BRCCs.
KW - Compositional analysis
KW - Lignin
KW - Pyrolysis
KW - Rice husk
KW - Sequential extraction
UR - https://www.scopus.com/pages/publications/84861007838
U2 - 10.1016/j.biortech.2012.04.006
DO - 10.1016/j.biortech.2012.04.006
M3 - Article
C2 - 22609664
AN - SCOPUS:84861007838
SN - 0960-8524
VL - 116
SP - 114
EP - 119
JO - Bioresource Technology
JF - Bioresource Technology
ER -
