title: Comparison of direct and indirect pyrolysis of micro-algae Isochrysis.
abstract: Yield and composition of pyrolysis oil in direct and indirect pyrolysis process were investigated which indicated that pyrolysis of defatted microalgae provided a potential way to convert protein and carbohydrate to biofuels. Defatted microalgae pyrolysis with lipid extraction has higher total oil yield than only microalgae direct pyrolysis. There was an increase for N-heterocyclic compounds and phenols and a decrease for hydrocarbons in defatted microalgae pyrolysis oil. There is an apparent decrease from C12 to C16 and nearly no carbon distribution from C17 to C22 for defatted microalgae pyrolysis. Based on composition of pyrolysis feedstock, pyrolysis oil yields were simulated by Compounds Biofuel Model and their accuracy was less than ±4.4%. Considering total oil yield and characteristics, microalgae pyrolysis after lipid extraction process is a promising way for microalgae utilization.
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Center, Beihang University, 37 Xueyuan Road, Haidian District, Beijing, PR China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Center, Beihang University, 37 Xueyuan Road, Haidian District, Beijing, PR China.
authors.forename: Bingwei
authors.initials: B
authors.lastname: Zhao
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Center, Beihang University, 37 Xueyuan Road, Haidian District, Beijing, PR China.
authors.forename: Xiaohan
authors.initials: X
authors.lastname: Tang
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Center, Beihang University, 37 Xueyuan Road, Haidian District, Beijing, PR China. Electronic address: yangxiaoyi@buaa.edu.cn.
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Yang
mesh_terms: D056804:Biofuels; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000032:analysis; D002244:Carbon / Q000378:metabolism; D003198:Computer Simulation; D005227:Fatty Acids / Q000032:analysis; D058087:Haptophyta / Q000378:metabolism*; D006358:Hot Temperature; D008055:Lipids / Q000032:analysis; D058086:Microalgae / Q000378:metabolism*; D009821:Oils / Q000378:metabolism
chemical_list: D056804:Biofuels; D002241:Carbohydrates; D005227:Fatty Acids; D008055:Lipids; D009821:Oils; D002244:Carbon
keywords: Lipid extraction; Microalgae pyrolysis; Route evaluation; Total oil yield; Yield simulation