Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock

Yun Pu Wang, Shu Mei Zhang, Qiu Hao Wu, Deng Le Duan, Yu Huan Liu, Roger Ruan, Guiming Fu, Leilei Dai, Lin Jiang, Zhenting Yu, Zihong Zeng, Xiaojie Tian, Xiuhua Yang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were investigated. HZSM-5 was used as the catalyst to study the pyrolysis of six different soapstocks at 200°C, 300°C, and 400°C catalytic temperature. Results showed that the bio-oil yields initially increased and then decreased with the increase in catalytic temperature. When the catalytic temperature was 300°C, the bio-oil reached up to the maximum value (65.8 wt.%). Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the soapstocks. In the case of saturated fatty acid sodium, a series of alkanes was formed, whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes, the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium.

Original languageEnglish (US)
Pages (from-to)202-208
Number of pages7
JournalInternational Journal of Agricultural and Biological Engineering
Volume12
Issue number6
DOIs
StatePublished - 2019

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), China Scholarship Council (201806820035), Science and Technology Research Project of Jiangxi Province Education Department (No. GJJ150213), Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development (No. Y707sb1001).

Keywords

  • Bio-oil
  • HZSM-5
  • Microwave pyrolysis vegetable oil soapstock

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