Elemental migration and characterization of products during hydrothermal liquefaction of cornstalk
Biofuels production from biomass through hydrothermal liquefaction(HTL)is a promising direction.This study characterized products and element migrations during HTL of cornstalk at seven different operation temperatures in a range of 210 to 375oC.The biocrude oil yield significantly increased from 7.04%(210℃)to 23.32%(290℃)as the temperature increased,and the yield decreased to 21.07%when further increased to 375℃.A carbon recovery of 11.03%-38.69%,and a hydrogen recovery of 7.77%-25.61%were achieved in the biocrude oil,mainly determined by biocrude yields.The carbon(12.69%-70.95%)and hydrogen recoveries(5.11%-64.36%)in the solid residue continually decreased as the temperature increased.Hydrogen(27.87%-70.94%)and nitrogen(74.56%-81.76%)were effectively recovered in the aqueous phase.Analysis of HTL products using GC-MS,HPLC,TGA and FT-IR indicated that major organic compounds in the biocrude oil were interestingly similar at 210℃-270℃.Specifically,the identified compounds included hydrocarbons,esters and carboxylic acid.
Hydrothermal liquefaction Cornstalk Biocrude production Elemental migration
ZHU Zhangbing SI Buchun LU Jianwen ZHANG Yuanhui LIU Zhidan
Laboratory of Environment-Enhancing Energy(E2E)and Key Laboratory of Agricultural Engineering in Str Laboratory of Environment-Enhancing Energy(E2E)and Key Laboratory of Agricultural Engineering in Str
国内会议
天津
英文
78-81
2017-05-25（万方平台首次上网日期，不代表论文的发表时间）