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Chemical Recycling of Plastic Marine Litter: First Analytical Characterization of The Pyrolysis Oil and of Its Fractions and Comparison with a Commercial Marine Gasoil

Author

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  • Gian Claudio Faussone

    (Sintol, Corso Matteotti 32A, 10121 Torino, Italy
    University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia)

  • Teresa Cecchi

    (ITT Montani, Via Montani 7, 63900 Fermo, FM, Italy)

Abstract

A detailed molecular fingerprint of raw pyrolysis oil from plastic wastes is a new research area. The present study focuses for the first time on the chemical recycling of plastic marine litter; we aim to chemically characterize the obtained raw pyrolysis oil and its distillates (virgin naphtha and marine gasoil) via GC-MS and FT-IR. For all samples, more than 30% of the detected compounds were identified. 2,4-dimethyl-1-heptene, a marker of PP pyrolysis, is the most represented peak in the chemical signature of all the marine litter pyrolysis samples, and it differentiates commercial and pyrolysis marine gasoil. The presence of naphthalenes is stronger in commercial gasoil, compared to its pyrolysis analog, while the opposite holds for olefins. The overlap between the two molecular fingerprints is impressive, even if saturated hydrocarbons are more common in commercial gasoil, and unsaturated compounds are more common in the gasoil derived from pyrolysis. A technical comparison between the commercial marine gasoil and the one obtained from the marine litter pyrolysis is also attempted. Gasoil derived from marine litter fully complies with the ISO8217 standards for distillate marine fuel. On the other hand, the virgin naphtha is particularly rich in BTX, ethylbenzene, styrene, and alpha olefins, which are all important recoverable platform chemicals for industrial upcycling.

Suggested Citation

  • Gian Claudio Faussone & Teresa Cecchi, 2022. "Chemical Recycling of Plastic Marine Litter: First Analytical Characterization of The Pyrolysis Oil and of Its Fractions and Comparison with a Commercial Marine Gasoil," Sustainability, MDPI, vol. 14(3), pages 1-17, January.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:3:p:1235-:d:730697
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    References listed on IDEAS

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    1. Iñiguez, M.E. & Conesa, J.A. & Fullana, A., 2016. "Marine debris occurrence and treatment: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 64(C), pages 394-402.
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