Microwave-catalyzed co-pyrolysis of Chlorella vulgaris and marine waste plastics using Ni-Fe@C bifunctional catalyst: Characterization, pyrolysis oil analysis and reaction mechanism

The co-pyrolysis of Chlorella vulgaris (CV) and marine waste plastics (MW) is beneficial in solving the shortcomings of microalgae conversion and alleviating marine ecological problems. In this paper, the monometallic (Ni, Fe) and bimetallic (Ni-Fe) based metal-organic frameworks (MOFs) derived cata...

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Bibliographic Details
Published in:Journal of environmental chemical engineering 2024-10, Vol.12 (5), p.113859, Article 113859
Main Authors: Wan, Shouqiang, He, Shiyuan, Shi, Haosen, Mo, Xiankai, Chen, Chunxiang, Huang, Xiaodong
Format: Article
Language:English
Subjects:
Chlorella vulgaris
Dual-function catalysts
Marine waste plastics
Microwave co-pyrolysis
Pyrolysis oil
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Summary:The co-pyrolysis of Chlorella vulgaris (CV) and marine waste plastics (MW) is beneficial in solving the shortcomings of microalgae conversion and alleviating marine ecological problems. In this paper, the monometallic (Ni, Fe) and bimetallic (Ni-Fe) based metal-organic frameworks (MOFs) derived catalysts were prepared, and the effects of catalysts with different additions amounts (10 %, 20 % and 30 %) on co-pyrolysis of CV and MW were studied by microwave oven. The results showed that the catalysts improved co-pyrolysis characteristics and pyrolysis oil yield. The maximum average weight loss rate (0.02395 wt%/s) and pyrolysis oil yield (14.17 %), as well as the minimum reaction time (2971 s) under 30 % Fe-Ni@C. GC-MS showed that adding catalysts to C8M2 (CV/MW = 8:2) increased the hydrocarbon content (>30 %) and the denitrogenation efficiency (>31 %) in pyrolysis oil, while enhancing the selectivity of low carbon numbers (
ISSN:2213-3437
DOI:10.1016/j.jece.2024.113859