The pyrolysis of scrap tires is a very attractive strategy to valorize chemically these end-of-life wastes. The products of this step and any additional one, such as hydrotreating, are relatively complex in nature entangling the understanding and limiting the viability. In this work, we have investigated in detail the composition of a tire pyrolysis oil blended with light cycle oil (from a refinery) and its hydrotreated products using a bifunctional NiW/HY catalyst at 320–400 °C. We have applied a set of analytical techniques to assess the composition, namely simulated distillation, ICP, GC/FID-PFPD, GC × GC/MS, and APPI FT-ICR/MS. Our results show the strength of our analytical workflow to highlight the compositional similarities of this pyrolysis oil with the standard refinery streams. The main differences arise from the higher boiling point species (originated during the pyrolysis of tires) and relatively high concentration of oxygenates. These effects can be minimized by hydrotreating the feed which effectively removes heteroatomic compounds from the feed while boosting the quantity and quality of gasoline and diesel fractions.
|Original language||English (US)|
|Number of pages||9|
|State||Published - May 4 2021|
Bibliographical noteKAUST Repository Item: Exported on 2021-05-07
Acknowledgements: This work has been carried out with the financial support of the Ministry of Science, Innovation and Universities (MICIU) of the Spanish Government (grant RTI2018-096981-B-I00), the European Union’s ERDF funds and Horizon 2020 Research and Innovation Programme under the Marie Skłodowska-Curie and INFRAIA actions (grants 823745 and 731077) and the Basque Government (grant IT1218-19). Dr. Roberto Palos thanks the University of the Basque Country UPV/EHU for his postdoctoral grant (UPV/EHU 2019). Funding for this work was provided by King Abdullah University of Science and Technology (KAUST). The FT-ICR/MS facility is supported by Biocenter Kuopio/Biocenter Finland and the ERDF (grant A70135). The authors also thank Taina Nivajärvi for a skillful technical assistance.
ASJC Scopus subject areas
- Waste Management and Disposal