Catalytic co-pyrolysis of solid wastes (low-density polyethylene and lignocellulosic biomass) over microwave assisted biochar for bio-oil upgrading and hydrogen production

Rongge Zou, Chenxi Wang, Moriko Qian, Erguang Huo, Xiao Kong, Yunpu Wang, Leilei Dai, Lu Wang, Xuesong Zhang, Wendy C. Mateo, Roger Ruan, Hanwu Lei

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Metal catalysts are unavoidable within the process of catalytic pyrolysis, a part of hydrogen production; as a result, the reuse and disposal of these materials are problems that need to be solved. Biochar, with its extensive sources, large specific area, and developed pores, has the potential to be developed in this catalytic area. In this study, we used microwave-assisted corn stover biochar as a catalyst in the co-pyrolysis of Douglas Fir (DF) and low-density polyethylene (LDPE) in order to investigate its catalytic effects. The results showed that the biochar significantly increased the selectivity of hydrogen (H2) in the syngas, and the highest selectivity that could be achieved was 72 vol% at 650 °C, with a biochar (BC)/feedstock ratio of 4. Furthermore, the application of biochar decreased the wax yield and contributed to the good selectivity of aromatics. The biochar developed in this study was also proven to show good reusability, as even after 10 times of reuses, the biochar still achieved a yield of H2 over 50 vol%.

Original languageEnglish (US)
Article number133971
JournalJournal of Cleaner Production
Volume374
DOIs
StatePublished - Nov 10 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Biochar catalyst
  • Biomass
  • Co-pyrolysis
  • Hydrogen
  • LDPE

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