Ex-situ catalytic upgrading of vapors from fast microwave-assisted co-pyrolysis of Chromolaena odorata and soybean soapstock

Yunpu Wang, Qiuhao Wu, Dengle Duan, Roger Ruan, Yuhuan Liu, Leilei Dai, Yue Zhou, Yunfeng Zhao, Shumei Zhang, Zihong Zeng, Lin Jiang, Zhenting Yu

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


Fast microwave-assisted catalytic co-pyrolysis of Chromolaena odorata (C. odorata) and soybean soapstock with HZSM-5 as an ex-situ catalyst was investigated. Effects of catalytic temperature, feedstock: catalyst ratio and C. odorata: soybean soapstock ratio on the yield and composition of the bio-oil were discussed. Results showed that catalytic temperature greatly influenced the bio-oil yield. Co-pyrolysis of C. odorata and soybean soapstock improved the bio-oil yield, and the maximum bio-oil yield of 55.14% was obtained at 250 °C. However, the addition of HZSM-5 decreased bio-oil yield but improved the quality of bio-oil. Moreover, the proportion of oxygen-containing compounds decreased dramatically with the addition of soybean soapstock. The C. odorata: soybean soapstock ratio of 1:2 and feedstock: catalyst ratio of 2:1 were the optimal condition to upgrade the bio-oil. In addition, the resulted biochar contained various essential elements and could be used as soil repair agent.

Original languageEnglish (US)
Pages (from-to)306-312
Number of pages7
JournalBioresource Technology
StatePublished - Aug 2018

Bibliographical note

Funding Information:
We gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 21766019 ), The Key Research and Development Program of Jiangxi Province ( 20171BBF60023 ), International Cooperation Project of MOST. P. R. China ( 2015DFA60170-4 ), Science and Technology Research Project of Jiangxi Province Education Department (No. GJJ150213 ), Innovation and Entrepreneurship Development Fund of “Thousand talents program” Talent (No. 1001-02102082 ), Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development (No. Y707sb1001 ).

Publisher Copyright:
© 2018 Elsevier Ltd


  • Chromolaena odorata
  • Ex-situ catalytic co-pyrolysis
  • HZSM-5
  • Microwave
  • Soybean soapstock


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