Kinetics of coffee industrial residue pyrolysis using distributed activation energy model and components separation of bio-oil by sequencing temperature-raising pyrolysis.
This study was carried out to investigate the kinetics of coffee industrial residue (CIR) pyrolysis, the effect of pyrolysis factors on yield of bio-oil component and components separation of bio-oil. The kinetics of CIR pyrolysis was analyzed using distributed activation energy model (DAEM), based on the experiments in thermogravimetric analyzer (TGA), and it indicated that the average of activation energy (E) is 187.86kJ·mol-1. The bio-oils were prepared from CIR pyrolysis in vacuum tube furnace, and its components were determined by gas chromatography/mass spectrometry (GC-MS). Among pyrolysis factors, pyrolysis temperature is the most influential factor on components yield of bio-oil, directly concerned with the volatilization and yield of components (palmitic acid, linoleic acid, oleic acid, octadecanoic acid and caffeine). Furthermore, a new method (sequencing temperature-raising pyrolysis) was put forward and applied to the components separation of bio-oil. Based on experiments, a solution of components separation of bio-oil was come out.
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China; Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, PR China.
Nanwei
N
Chen
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
Jie
J
Ren
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
Ziwei
Z
Ye
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
Qizhi
Q
Xu
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
Jingyong
J
Liu
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China; Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, PR China. Electronic address: sysun@gdut.edu.cn.
Shuiyu
S
Sun
D003069:Coffee / Q000737:chemistry* / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D007220:Industrial Waste; D007700:Kinetics; D008962:Models, Theoretical; D010938:Plant Oils / Q000737:chemistry* / Q000378:metabolism; D014835:Volatilization
D003069:Coffee; D007220:Industrial Waste; D010938:Plant Oils
Bio-oil; Coffee industrial residue; Components separation; Kinetics; Pyrolysis