Fast microwave-assisted catalytic co-pyrolysis of lignin and low-density polyethylene with HZSM-5 and MgO for improved bio-oil yield and quality

Liangliang Fan, Paul Chen, Yaning Zhang, Shiyu Liu, Yuhuan Liu, Yunpu Wang, Leilei Dai, Roger Ruan

Research output: Contribution to journalArticlepeer-review

178 Scopus citations

Abstract

Fast microwave-assisted catalytic co-pyrolysis of lignin and low-density polyethylene (LDPE) with HZSM-5 and MgO was investigated. Effects of pyrolysis temperature, lignin to LDPE ratio, MgO to HZSM-5 ratio, and feedstock to catalyst ratio on the products yields and chemical profiles were examined. 500 °C was the optimal co-pyrolysis temperature in terms of the maximum bio-oil yield. The proportion of aromatics increased with increasing LDPE content. In addition, with the addition of LDPE (lignin/LDPE = 1/2), methoxyl group in the phenols was completely removed. A synergistic effect was found between lignin and LDPE. The proportion of aromatics increased and alkylated phenols decreased with increasing HZSM-5 to MgO ratio. The bio-oil yield increased with the addition of appropriate amount of catalyst and the proportion of alkylated phenols increased with increasing catalyst to feedstock ratio.

Original languageEnglish (US)
Pages (from-to)199-205
Number of pages7
JournalBioresource Technology
Volume225
DOIs
StatePublished - Feb 1 2017

Bibliographical note

Publisher Copyright:
© 2016

Keywords

  • Catalytic co-pyrolysis
  • HZSM-5
  • Lignin
  • Low-density polyethylene
  • MgO

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