Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 17 Chunhui Road, Laishan District, Yantai 264003, China.
Bioresour Technol. 2013 Jul;140:152-7. doi: 10.1016/j.biortech.2013.04.121. Epub 2013 May 9.
The pyrolysis and combustion of Spirulina wastes were assessed by thermogravimetric analysis. The results showed that combustion has considerable difference from pyrolysis under the inert atmosphere, such as the enhancement of the decomposition at low temperature, promotion of the char residue combustion and the reduction of activation energy. Under inert atmosphere, the distributed activation energy is found to be increased from 143 to 964 kJ mol(-1) with the increase of the mass conversion rate, giving a high correlation coefficient. The results also imply that the DAEM is not suitable for evaluation of the degradation kinetics under air atmosphere. Comparatively, the activation energy obtained from established global kinetic model is correspondingly lower than that from DAEM under both inert and oxidative environments. The global kinetic model is estimated to be applicable for describing the thermal decomposition of Spirulina wastes under both inert and oxidative conditions.
采用热重分析方法研究了螺旋藻废料的热解和燃烧特性。结果表明，在惰性气氛下，燃烧与热解有很大的不同，如低温下分解的增强、炭残留物燃烧的促进以及活化能的降低。在惰性气氛下，随着转化率的增加，分布活化能从 143 kJ/mol 增加到 964 kJ/mol，相关性很高。结果还表明，在空气气氛下，DAEM 不适合评估降解动力学。相比之下，在惰性和氧化环境下，从建立的全局动力学模型中获得的活化能都相应低于 DAEM。全局动力学模型被认为适用于描述在惰性和氧化条件下螺旋藻废料的热分解。
