title: Thermogravimetric study on pyrolysis kinetics of Chlorella pyrenoidosa and bloom-forming cyanobacteria.
abstract: The pyrolysis process of two microalgae, Chlorella pyrenoidosa (CP) and bloom-forming cyanobacteria (CB) was examined by thermo-gravimetry to investigate their thermal decomposition behavior under non-isothermal conditions. It has found that the pyrolysis of both microalgae consists of three stages and stage II is the major mass reduction stage with mass loss of 70.69% for CP and 64.43% for CB, respectively. The pyrolysis kinetics of both microalgae was further studied using single-step global model (SSGM) and distributed activation energy model (DAEM). The mean apparent activation energy of CP and CB in SSGM was calculated as 143.71 and 173.46 kJ/mol, respectively. However, SSGM was not suitable for modeling pyrolysis kinetic of both microalgae due to the mechanism change during conversion. The DAEM with 200 first-order reactions showed an excellent fit between simulated data and experimental results.
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Mian
authors.initials: M
authors.lastname: Hu
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Chen
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Dabin
authors.initials: D
authors.lastname: Guo
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Cuixia
authors.initials: C
authors.lastname: Liu
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Xiao
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. Electronic address: huzq@hust.edu.cn.
authors.forename: Zhiquan
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Shiming
authors.initials: S
authors.lastname: Liu
mesh_terms: D018533:Biomass; D002708:Chlorella / Q000378:metabolism*; D003198:Computer Simulation; D000458:Cyanobacteria / Q000378:metabolism*; D004055:Differential Thermal Analysis; D005068:Eutrophication; D006358:Hot Temperature; D007700:Kinetics; D008962:Models, Theoretical; D016011:Normal Distribution; D013818:Thermogravimetry / Q000379:methods*
keywords: Bloom-forming cyanobacteria; Chlorella pyrenoidosa; Kinetic study; Pyrolysis; Thermogravimetric analysis