Microwave-assisted co-pyrolysis of brown coal and corn stover for oil production

Yaning Zhang, Liangliang Fan, Shiyu Liu, Nan Zhou, Kuan Ding, Peng Peng, Erik Anderson, Min Addy, Yanling Cheng, Yuhuan Liu, Bingxi Li, John Snyder, Paul Chen, Roger Ruan

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48 Scopus citations


The controversial synergistic effect between brown coal and biomass during co-pyrolysis deserves further investigation. This study detailed the oil production from microwave-assisted co-pyrolysis of brown coal (BC) and corn stover (CS) at different CS/BC ratios (0, 0.33, 0.50, 0.67, and 1) and pyrolysis temperatures (500, 550, and 600 °C). The results showed that a higher CS/BC ratio resulted in higher oil yield, and a higher pyrolysis temperature increased oil yield for brown coal and coal/corn mixtures. Corn stover and brown coal showed different pyrolysis characteristics, and positive synergistic effect on oil yield was observed only at CS/BC ratio of 0.33 and pyrolysis temperature of 600 °C. Oils from brown coal mainly included hydrocarbons and phenols whereas oils from corn stover and coal/corn mixtures were dominated by ketones, phenols, and aldehydes. Positive synergistic effects were observed for ketones, aldehydes, acids, and esters whereas negative synergistic effects for hydrocarbons, phenols and alcohols.

Original languageEnglish (US)
Pages (from-to)461-464
Number of pages4
JournalBioresource Technology
StatePublished - Jul 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd


  • Brown coal
  • Corn stover
  • Microwave-assisted co-pyrolysis
  • Oil production
  • Synergistic effect


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