Pyrolysis characteristics and kinetics of microalgal Aurantiochytrium sp. KRS101
Microalgae have recently attracted tremendous attention as a possible feedstock for biofuel production. In this study, the pyrolysis characteristics and kinetics of Aurantiochytrium sp. KRS101, a kind of heterotrophic oleaginous microalgae, were investigated by means of thermogravimetric analysis an...
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Published in | Energy (Oxford) Vol. 118; pp. 369 - 376 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.01.2017
Elsevier BV |
Subjects | |
Online Access | Get full text |
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Summary: | Microalgae have recently attracted tremendous attention as a possible feedstock for biofuel production. In this study, the pyrolysis characteristics and kinetics of Aurantiochytrium sp. KRS101, a kind of heterotrophic oleaginous microalgae, were investigated by means of thermogravimetric analysis and pyrolysis in a micro-tubing reactor. Most biochemical components of the microalgae (carbohydrates, proteins, and lipids) were decomposed between 150 and 600 °C at heating rates of 5–20 °C/min. Derivative thermogravimetry (DTG) curves were deconvoluted to more fully understand the separate decompositions of carbohydrates, proteins, and lipids. Experimental results of pyrolysis in the micro-tubing reactor were consistent with the predictions of the proposed lumped kinetic model, and the kinetic rate constants indicated that the predominant reaction pathway under the investigated pyrolysis conditions was from biomass to bio-oil rather than from biomass to gas.
•Systematic study and first attempt at pyrolysis of Aurantiochytrium sp. KRS101.•Investigation of pyrolysis characteristics and kinetics by means of non-isothermal TGA and isothermal pyrolysis experiments.•Study of the influence of pyrolysis conditions upon product yield distribution and composition.•Application of a quantitative kinetic model and mechanism study for pyrolysis of microalgae. |
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ISSN: | 0360-5442 1873-6785 |
DOI: | 10.1016/j.energy.2016.12.040 |