期刊
BIORESOURCE TECHNOLOGY
卷 139, 期 -, 页码 242-248出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.03.192
关键词
Biomass; Macroalgae; Sagarssum sp.; Lumped kinetic model; Thermogravimetric analysis
资金
- Ministry for Food, Agriculture, Forestry and Fisheries [12128295500]
Alga Sagarssum sp. can be converted to bio-oil, gas, and char through pyrolysis. In this study, the pyrolysis characteristics and kinetics of Sagarssum sp. were investigated using a thermogravimetric analyzer and tubing reactor, respectively. Sagarssum sp. decomposed below 550 degrees C, but the majority of materials decomposed between 200 and 350 degrees C at heating rates of 5-20 degrees C/min. The apparent activation energy increased from 183.53 to 505.57 kJ mol(-1) with increasing pyrolysis conversion. The kinetic parameters of Sagarssum sp. pyrolysis were determined using nonlinear least-squares regression of the experimental data, assuming second-order kinetics. The proposed lumped kinetic model represented the experimental results well and the kinetic rate constants suggested a predominant pyrolysis reaction pathway from Sagarssum sp. to bio-oil, rather than from Sagarssum sp. to gas. The kinetic rate constants indicated that the predominant reaction pathway was A (Sagarssum sp.) to B (bio-oil), rather than A (Sagarssum sp.) to C (gas; C-1-C-4). (C) 2013 Elsevier Ltd. All rights reserved.
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