Cited by 138Thermochemical Biomass Conversion ProcessesAlgal biology and biofuel productionThermal and Kinetic Analysis

Investigation on Pyrolysis of Low Lipid Microalgae Chlorella vulgaris and Dunaliella salina

Gong, Xun, Zhang, Biao, Zhang, Yang, Huang, Yongfu, Xu, Minghou·2014·Energy & Fuels

Abstract

Chlorella vulgaris and Dunaliella salina are two kinds of microalgae, which are widely distributed in China. Thermal decomposition of low-lipid C. vulgaris and D. salina were performed using thermogravimetric analysis. The effect of heating rates on pyrolytic characteristics was investigated, and thermal decomposition kinetics was determined as well. Furthermore, pyrolysis experiments were carried out on a fixed-bed reactor. The gas, char, and tar yields were analyzed, and the mass balance was from 88.4 to 96.8%. C. vulgaris had higher H 2 yields and lower CH 4 yields than D. salina during pyrolysis. The theoretical calorific value of the pyrolytic gas of D. salina was higher than that of C. vulgaris because D. salina had a higher amount of high heating value components, such as C 2 H 6, C 2 H 4, and C 2 H 2 . The biochar from microalgae had a smaller Brunauer–Emmett–Teller surface area than the char from pyrolysis of lignocellulosic biomass. Highest yields of pyrolytic oil were 49.2 and 55.4% (water-free basis) for C. vulgaris and D. salina at 500 °C, respectively. The characteristics of bio-oil from microalgae pyrolysis, including water content, density, acidity, and heating value, were investigated as well as the chemical composition at different pyrolysis temperatures. The microalgae pyrolytic oil was found to have significant levels of alkanes, alkenes, alkines, and esters and be particularly high in nitrogenous compounds. In comparison to the bio-oils from common lignocellulosic biomass, the microalgae oil had lower oxygen and water contents, a lower total acid number, and a higher heating value.

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Crossref · 10.1021/ef401500z

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  • Fast pyrolysis of Chlorella vulgaris and Dunaliella salina at 500 °C gave 49.2% and 55.4% bio-oil yields, respectively.

    “For example, fast pyrolysis (FP) of Chlorella vulgaris and Dunaliella salina at 500 ◦ C temperature gave 49.2% and 55.4% bio-oil yields, respectively [101].”

    From Key Targets for Improving Algal Biofuel Production (2021) · cites this paper as [101]

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Authors
Gong, X., Zhang, B., Zhang, Y., Huang, Y., & Xu, M.
Affiliations
State Key Laboratory of Coal Combustion (CN)
Corresponding author
Xu, Minghou
Venue
Energy & Fuels
Published
2013-11-13
Volume
28
Issue
1
Pages
95-103
ISSN
  • 0887-0624 (ISSN-L)
  • 1520-5029
OpenAlex
W2326777183
Cited by
138
References
37
Citations by year
2026: 11 · 2025: 18 · 2024: 15 · 2023: 12 · 2022: 14 · 2021: 18 · 2020: 12 · 2019: 10 · 2018: 3 · 2017: 6 · 2016: 6 · 2015: 6 · 2014: 6 · 2013: 1
FWCI
3.49
Type
journal article
Language
en
Open access
closed
Locations
Energy & Fuels (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal and Kinetic Analysis
Keywords
microalgae pyrolysis, Chlorella vulgaris, Dunaliella salina, thermal decomposition kinetics, heating rate effects, pyrolysis gas yield, bio-oil composition, biochar, calorific value, nitrogen compounds, fixed-bed reactor

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