Kinetic study of the catalytic cracking of waste motor oil using biomass-derived heterogeneous catalysts

Yuliana Rodriguez, Renato Guerra, Karla Vizuete, Alexis Debut, Daniela Almeida Streitwieser, Jose R. Mora, Sebastian Ponce

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Herein, biochar from biomass residues is demonstrated as active materials for the catalytic cracking of waste motor oil into diesel-like fuels. Above all, alkali-treated rice husk biochar showed great activity with a 250% increase in the kinetic constant compared to the thermal cracking. It also showed better activity than synthetic materials, as previously reported. Moreover, much lower activation energy (185.77to293.48kJmol) for the cracking process was also obtained. According to materials characterization, the catalytic activity was more related to the nature of the biochar's surface than its specific surface area. Finally, liquid products complied with all the physical properties defined by international standards for diesel-like fuels, with the presence of hydrocarbons chains between C 10-C 27 similar to the ones obtained in commercial diesel.

Original languageEnglish
Pages (from-to)46-54
Number of pages9
JournalWaste Management
Volume167
DOIs
StatePublished - 15 Jul 2023

Keywords

  • Biochar
  • Biochar catalyst
  • Chemical recycling
  • Diesel-like fuel
  • Kinetic study
  • Residual biomass
  • Waste motor oil
  • Hydrocarbons
  • Biomass
  • Petroleum
  • Charcoal

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