期刊
BIORESOURCE TECHNOLOGY
卷 190, 期 -, 页码 89-96出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.04.038
关键词
Microwave pyrolysis; Lignocellulosic biomass; Microalgae; Kinetics; Bio-oil
资金
- Natural Science Foundation of China [21176109, U1361120, 21476100]
Microwave (MW) pyrolysis of algal and lignocellulosic biomass samples were studied using a modified domestic oven. The pyrolysis temperature was recorded continuously by inserting a thermocouple into the samples. Temperatures as high as 1170 and 1015 degrees C were achieved for peanut shell and Chlorella vulgaris. The activation energy for MW pyrolysis was calculated by Coats-Redfern method and the values were 221.96 and 214.27 kJ/mol for peanut shell and C. vulgaris, respectively. Bio-oil yields reached to 27.7 wt.% and 11.0 wt.% during pyrolysis of C. vulgaris and peanut shell, respectively. The bio-oil samples from pyrolysis were analyzed by a gas chromatography-mass spectrometry (GC-MS). Bio-oil from lignocellulosic biomass pyrolysis contained more phenolic compounds while that from microalgae pyrolysis contained more nitrogen-containing species. Fourier transform infrared spectroscopy (FTIR) analysis results showed that concentration of OH, C-H, C=O, O-CH3, and C-O functional groups in char samples decreased significantly after pyrolysis. (C) 2015 Elsevier Ltd. All rights reserved.
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