Study on co-pyrolysis synergistic mechanism of seaweed and rice husk by investigation of the characteristics of char/coke

文献类型： 外文期刊

第一作者： Xu, Shannan

作者： Xu, Shannan;Wang, Qian;Li, Chunhou;Uzoejinwa, Benjamin Bernard;Wang, Shuang;Hu, Yamin;Qian, Lili;Liu, Lu;Li, Bin;He, Zhixia;Abomohra, Abd El-Fatah;Abomohra, Abd El-Fatah;He, Zhixia;Zhang, Bo;Uzoejinwa, Benjamin Bernard

作者机构：

关键词： Co-pyrolysis; Seaweed Rice husk; Char/coke analysis; Synergistic mechanism

期刊名称：RENEWABLE ENERGY （ 影响因子：8.001； 五年影响因子：7.435 ）

ISSN： 0960-1481

年卷期： 2019 年 132 卷

页码：

收录情况： SCI

摘要： This study investigates the characteristics of pyrolysis char/coke and elemental morphological changes on surface of char/coke produced, during co-pyrolysis of seaweed (EN) and rice husk (HU) at various temperatures through XPS, FTIR and SEM analysis methods. Analysis of pyrolysis products including by-products will help to partly explore co-pyrolysis synergistic mechanisms of the seaweed and rice husk. Thus, fast pyrolysis of EN and HU was conducted in a fixed bed reactor. Coke/char from the individual pyrolysis of EN and HU respectively at different temperatures, and those from co-pyrolysis of EN and HU (1:1) at 550 degrees C, were analyzed. Results revealed that the co-pyrolysis process has synergistic effects. Moreover, the release of nitrogenous substances was found to be inhibited by addition of HU at low temperature (<190 degrees C) range. It was also observed that co-pyrolysis of EN with HU does not only facilitates pyrolysis of aliphatic C-O functional groups at the middle temperature range, but also contributes to the cleavage of ether bonds of some water-soluble polysaccharides at high temperature (320-550 degrees C) level, hence generating aromatic compounds. Besides, the analysis of pore structures, pore size distributions and fractal dimensions of pyrolysis char/coke also show that the co-pyrolysis process has a synergistic effect. (C) 2018 Elsevier Ltd. All rights reserved.

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