IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v145y2020icp1761-1771.html
   My bibliography  Save this article

Thermal cracking behavior, products distribution and char/steam gasification kinetics of seawater Spirulina by TG-FTIR and Py-GC/MS

Author

Listed:
  • Li, Jie
  • Tian, Yuanyu
  • Zong, Peijie
  • Qiao, Yingyun
  • Qin, Song

Abstract

In this study, fast pyrolysis of seawater Spirulina, is carried out to evaluate the potential of deriving valuable chemicals and fuel molecules from this seawater algae variety. The devolatilization behavior and gaseous product evolution of seawater Spirulina were carried out by TG-FTIR. Py-GC-MS was employed to investigate the composition and distribution of volatile products formed from the seawater Spirulina through high-temperature fast pyrolysis process. Finally, the seawater Spirulina char gasification reactivity and kinetic parameters were evaluated using advanced methods of volume, shrinking core and random pore. Results indicate that the thermal cracking process of seawater Spirulina mainly consisted of three reaction stages, including dehydration and drying stage, fast pyrolysis stage and residues slow decomposition stage. High heating rate has significant effect on the performance of devolatilization profiles. H2O, CH4, CO2, HNCO, NH3, HCN, CO, C–O bond and CO bond were the typical gaseous products released from the fast pyrolysis stage of seawater Spirulina. The maximum release rate of seawater Spirulina for CH4 was located at about 450 °C, corresponding to the main pyrolysis of long-chain fatty acids from lipid fraction. The high temperature fast pyrolysis of seawater Spirulina resulted in aliphatic (alkanes, alkenes) and aromatic hydrocarbons, esters, oxygenates (carboxylic acids, aldehydes, ketones, and alcohols), phenolics, and nitrogen- and sulfur-containing organic compounds. Above 750 °C was considered as the optimum temperature, which can reduce the generation of oxygenated compounds, and the content of nitrogen and phenolic compounds were decreased, maximum yield of quantified hydrocarbons was observed. The increase of gasification temperature can obviously improve the gasification reactivity of seawater Spirulina chars. The activation energies of the VM, SCM and RPM models of seawater Spirulina chars were 187.95, 173.14 and 154.34 kJ/mol, respectively. RPM displays a significant fitness with the experimental data than those of the other two models.

Suggested Citation

  • Li, Jie & Tian, Yuanyu & Zong, Peijie & Qiao, Yingyun & Qin, Song, 2020. "Thermal cracking behavior, products distribution and char/steam gasification kinetics of seawater Spirulina by TG-FTIR and Py-GC/MS," Renewable Energy, Elsevier, vol. 145(C), pages 1761-1771.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:1761-1771
    DOI: 10.1016/j.renene.2019.07.096
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148119311152
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2019.07.096?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Chen, Zhiyun & Chen, Huashan & Wu, Xieyuan & Zhang, Junhui & Evrendilek, Deniz Eren & Liu, Jingyong & Liang, Guanjie & Li, Weixin, 2021. "Temperature- and heating rate-dependent pyrolysis mechanisms and emissions of Chinese medicine residues and numerical reconstruction and optimization of their non-linear dynamics," Renewable Energy, Elsevier, vol. 164(C), pages 1408-1423.
    2. Sun, Zhao & Russell, Christopher K. & Fan, Maohong, 2021. "Effect of calcium ferrites on carbon dioxide gasification reactivity and kinetics of pine wood derived char," Renewable Energy, Elsevier, vol. 163(C), pages 445-452.
    3. Adnan, Muflih A. & Xiong, Qingang & Muraza, Oki & Hossain, Mohammad M., 2020. "Gasification of wet microalgae to produce H2-rich syngas and electricity: A thermodynamic study considering exergy analysis," Renewable Energy, Elsevier, vol. 147(P1), pages 2195-2205.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:145:y:2020:i:c:p:1761-1771. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.