Conversion of poplar into bio-oil via subcritical hydrothermal liquefaction: Structure and antioxidant capacity

被引：30

作者：

Wu, Xiao-Fei ^{[1
]}

Zhou, Qian ^{[1
]}

Li, Ming-Fei ^{[1
]}

Li, Shu-Xian ^{[1
]}

Bian, Jing ^{[1
]}

Peng, Feng ^{[1
]}

机构：

[1] Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2018年 / 270卷

基金：

中国国家自然科学基金;

关键词：

Hydrothermal liquefaction; Poplar; Bio-oil; Antioxidant capacity; SUPERCRITICAL ETHANOL; RICE STRAW; WATER; BIOMASS; PRODUCTS; SOLVENTS; L; CARBONIZATION; PRETREATMENT; METHODOLOGY;

D O I：

10.1016/j.biortech.2018.09.032

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Subcritical hydrothermal liquefaction of poplar was performed at 220-280 degrees C, and the liquid phase produced was extracted by ethyl acetate to obtain light oil (LO), which contained LO1 (water-soluble) and LO2 (ethyl acetate-soluble). The residue was further extracted with acetone to produce heavy oil (HO) and solid residue (SR). The highest bio-oil yield of 19.88% was obtained at 260 degrees C. The HO produced at 260 degrees C had the highest content of C (69.13%) and the higher heating value was 27.97 MJ/kg. The O/C and H/C ratios of LO were higher than those of HO due to less aromatics in LO. Oxidative inhibition rates of bio-oils, measured in DPPH-ethanol solution at a concentration of 0.1 mg/mL, reached 60.76% for LO1 while 90.29% and 90.85% for LO2 and HO, respectively. The bio-oil with good antioxidant activity can be utilized as an additive in bio-diesel to improve oxidation stability.

引用

页码：216 / 222

页数：7

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