title: Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis.
abstract: Thermogravimetric analysis and differential thermal analysis were employed to investigate combustion characteristics of two low-lipid microalgae, Chlorella pyrenoidosa (CP) and Spirulina platensis (SP) and iso-conversional Starink approach was used to calculate the kinetic parameters in the present study. The results showed that three stages of mass loss, including dehydration, devolatilization and char oxidation, were observed during combustion of both of two low-lipid microalgae. The whole weight loss of combustion of two microalgae was both shifted to higher temperature zones with increased heating rates from 10 to 40 K/min. In the 0.1-0.9 conversion range, the apparent activation energy of CP increased first from 51.96 to 79.53 kJ/mol, then decreased to 55.59 kJ/mol. Finally, it slightly increased to 67.27 kJ/mol. In the case of SP, the apparent activation energy gradually increased from 68.51 to 91.06 kJ/mol.
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, PR China.
authors: Chao
authors: C
authors: Gai
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, PR China. Electronic address: zgliu@rcees.ac.cn.
authors: Zhengang
authors: Z
authors: Liu
authors: Department of Industrial and Systems Engineering, National University of Singapore, Singapore 117576, Singapore.
authors: Guanghua
authors: G
authors: Han
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, PR China.
authors: Nana
authors: N
authors: Peng
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, PR China; School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, PR China.
authors: Aonan
authors: A
authors: Fan
mesh_terms: D002708:Chlorella / Q000378:metabolism; D007700:Kinetics; D008055:Lipids / Q000737:chemistry*; D058086:Microalgae / Q000378:metabolism*; D012044:Regression Analysis; D013055:Spectrophotometry, Infrared; D053545:Spirulina / Q000378:metabolism; D013818:Thermogravimetry / Q000379:methods*
chemical_list: D008055:Lipids
keywords: Apparent activation energy; Combustion; Kinetics; Microalgae; Thermogravimetric analysis