College of Electrical Engineering, Guangxi University, Xixiangtang District, Nanning City, PR China.
Bioresour Technol. 2013 Sep;144:563-71. doi: 10.1016/j.biortech.2013.07.011. Epub 2013 Jul 10.
Oxy-fuel or O2/CO2 combustion technology was used to investigate the combustion of Chlorella vulgaris by thermogravimetric analysis (TGA). Oxy-fuel combustion occurs in an O2/CO2 atmosphere instead of an O2/N2 atmosphere and offers an alternative method of C. vulgaris preparation for biofuels processing. Our results show that three stages were observed during C. vulgaris combustion and the main combustion process occurred at the second stage. Compared with a 20%O2/80%N2 atmosphere, the mass loss rate at the DTG peaks (Rp) and the average reaction rate (Rv) in a 20%O2/80%CO2 atmosphere was lower, while the ignition temperature (TI) was higher. As oxygen concentration increases in an O2/CO2 atmosphere, Rp, Rv and the apparent activation energy (E) increases, while TI, the final temperature detected as mass stabilization (Tf) and the residue mass (Mr) decreases; As the heating rate (β) increases, TI, Tf and Rp increase, while Mr decreases.
富氧或 O2/CO2 燃烧技术被用于通过热重分析（TGA）研究小球藻的燃烧。富氧燃烧是在 O2/CO2 气氛中而不是在 O2/N2 气氛中进行的，为小球藻制备生物燃料提供了一种替代方法。我们的结果表明，在小球藻燃烧过程中观察到三个阶段，主要燃烧过程发生在第二阶段。与 20%O2/80%N2 气氛相比，在 20%O2/80%CO2 气氛中，DTG 峰（Rp）处的质量损失率和平均反应速率（Rv）较低，而着火温度（TI）较高。随着 O2/CO2 气氛中氧浓度的增加，Rp、Rv 和表观活化能（E）增加，而 TI、质量稳定时检测到的最终温度（Tf）和残留质量（Mr）降低；随着升温速率（β）的增加，TI、Tf 和 Rp 增加，而 Mr 降低。
