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Comparative Studies of the Pyrolytic and Kinetic Characteristics of Maize Straw and the Seaweed Ulva pertusa

文献类型： 外文期刊

作者： Ye, Naihao 1 ; Li, Demao 2 ; Chen, Limei 2 ; Zhang, Xiaowen 1 ; Xu, Dong 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Key Lab Sustainable Utilizat Marine Fishery Resou, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China

2.Liaocheng Univ, Dept Food Sci, Coll Agr, Liaocheng, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2010 年 5 卷 9 期

页码：

收录情况： SCI

摘要： Seaweed has attracted considerable attention as a potential biofuel feedstock. The pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa were studied and compared using heating rates of 10, 30 and 50 degrees C min(-1) under an inert atmosphere. The activation energy, and pre-exponential factors were calculated by the Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Popescu methods. The kinetic mechanism was deduced by the Popescu method. The results indicate that there are three stages to the pyrolysis; dehydration, primary devolatilization and residual decomposition. There were significant differences in average activation energy, thermal stability, final residuals and reaction rates between the two materials. The primary devolatilization stage of U. pertusa can be described by the Avramic-Erofeev equation (n=3), whereas that of maize straw can be described by the Mampel Power Law (n=2). The average activation energy of maize straw and U. pertusa were 153.0 and 148.7 KJ mol(-1,) respectively. The pyrolysis process of U.pertusa would be easier than maize straw. And co-firing of the two biomass may be require less external heat input and improve process stability. There were minor kinetic compensation effects between the pre-exponential factors and the activation energy.

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