Effect of glycerol as co-solvent on yields of bio-oil from rice straw through hydrothermal liquefaction.
This study examined the effect of glycerol used as a co-solvent on yields of bio-oil derived from rice straw through hydrothermal liquefaction (HTL). The reaction was conducted in a high-pressure batch reactor with different volume ratios of glycerol to water. The quality of the derived bio-oil was analyzed in terms of its elemental composition, heating value, water content, ash content, and acid number. Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry were conducted to analyze the chemical composition of the derived bio-oils. The following optimal conditions were obtained: 1:1 vol ratio of glycerol to water with 5wt% of Na2CO3 at 260°C for 1h. Under these conditions, 50.31wt% of bio-oil and 26.65wt% of solid residue were produced. Therefore, glycerol can be used as a co-solvent in HTL of rice straw at moderate temperatures to obtain bio-oil with high yield and quality.
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Leichang
L
Cao
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Cheng
C
Zhang
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Shilai
S
Hao
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Gang
G
Luo
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Electronic address: zhangsc@fudan.edu.cn.
Shicheng
S
Zhang
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Jianmin
J
Chen
D056804:Biofuels; D018533:Biomass; D003246:Conservation of Energy Resources; D008401:Gas Chromatography-Mass Spectrometry; D005990:Glycerol / Q000737:chemistry*; D012275:Oryza / Q000737:chemistry*; D012997:Solvents; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014867:Water / Q000737:chemistry
D056804:Biofuels; D012997:Solvents; D014867:Water; D005990:Glycerol
Bio-oil; Co-solvent; Glycerol; Hydrothermal liquefaction; Rice straw