Thermogravimetry study of the pyrolytic characteristics and kinetics of macro-algae Macrocystis pyrifera residue
Thermogravimetry study of the pyrolytic characteristics and kinetics of macro-algae Macrocystis pyrifera residue
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大型藻类Macrocystis Pyrifera残渣热解特性和动力学的热重研究
DOI：
10.1007/s10973-011-2102-8
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发表时间：
2013-03
影响因子：
4.4
通讯作者：
Hui Zhao
中科院分区：
文献类型：
--
作者：
Hui Zhao
巨囊藻是一种重要的海洋大型藻类，而其工业海藻酸盐提取产生的残留物是一个烫手山芋。为了确定其残渣是否适合用于热解生物燃料，用热重法研究了大型藻类黄腐菌残渣在5、10、20和30℃/min−1的惰性气氛中，在50~800℃的温度范围内的热解特性和动力学。用Flynn-WALL-Ozawa、Kisinger-Akahira-Sunose和Popescu方法计算了活化能和指前因子，并用Popescu方法推断了动力学机理。结果表明，稻瘟病菌残渣的初级挥发阶段可用Jander函数左(左[{1-左({1-α}右)^{1/3}}右]^{2}右)$$来描述。实验结果和动力学参数为以黄腐渣为原料的热解加工体系的设计提供了有用的信息。
Macrocystis pyrifera is one important marine macro-algae, while its residues produced by industrial alginate extraction is a hot potato. To figure out whether its residue is suitable for pyrolysis for biofuel, the pyrolytic characteristics and kinetics of macro-algae M. pyrifera residue was investigated using thermogravimetric method from 50 to 800 °C in an inert argon atmosphere at different heating rates of 5, 10, 20, and 30 °C min−1. The activation energy and pre-exponential factor was calculated by Flynn–Wall–Ozawa, Kissinger–Akahira–Sunose, and Popescu methods, and the kinetic mechanism was deduced by Popescu method. The results showed that the primary devolatilization stage of M. pyrifera residue can be described by Jander function $$ \left(\left[ {1 - \left( {1 - \alpha } \right)^{1/3} } \right]^{2}\right) $$. The average activation energy of M. pyrifera residue was 222.4 kJ mol−1. The results suggested that the experimental results and kinetic parameters provided useful information for the design of pyrolytic processing system using M. pyrifera residue as feedstock.
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