Fast microwave-assisted co-pyrolysis of pretreated bamboo sawdust and soapstock was conducted. The pretreatment process was carried out under microwave irradiation. The effects of microwave irradiation temperature, irradiation time, and concentration of hydrochloric acid on product distribution from co-pyrolysis and the relative contents of the major components in bio-oil were investigated. A maximum bio-oil yield of 40.00 wt.% was obtained at 200 °C for 60 min with 0.5 M hydrochloric acid. As pretreatment temperature, reaction time and acid concentration increased, respectively, the relative contents of phenols, diesel fraction (C12 + aliphatics), and other oxygenates decreased. The gasoline fraction (including C5–C12 aliphatics and aromatics) ranged from 55.77% to 73.30% under various pretreatment conditions. Therefore, excessive reaction time and concentration of acid are not beneficial to upgrading bio-oil.
Bibliographical noteFunding Information:
We gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21766019 ; 21466022 ), The Key Research and Development Program of Jiangxi Province (20171BBF60023), 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).
© 2018 Elsevier Ltd
- Bamboo sawdust