期刊
BIORESOURCE TECHNOLOGY
卷 304, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123017
关键词
Diseased swine fat; Biodiesel production; Two-step catalyzed process; Ultrasound; Purity
资金
- National Natural Science Foundation of China [51706063]
- Young Key Teachers Training Program of Henan Higher Education Institutions [2018GGJS028]
- Henan Youth Talent Project [2019HYTP026]
In order to enhance the yield of high quality biodiesel form diseased swine fat, the ultrasound-assisted two-step catalyzed process was employed. First, three-dimensional ultrasound-assisted concentrated sulfuric acid pre-esterification experiment was carried out. Then, the trans-esterification reaction catalyzed by KOH was performed, and four parameters (catalyst concentration, reaction time, methanol/oil molar ratio and reaction temperature) were optimized using response surface methodology. The results showed that the optimal trans-esterification reaction conditions were catalyst concentration of 1.11 wt%, reaction temperature of 62.3 degrees C, methanol/oil molar ratio of 7.42:1, and reaction time of 116.14 min. The most significant factor affecting biodiesel purity was identified as catalyst concentration. Under the optimal conditions, the maximum biodiesel purity reached to 98% with the reaction time of 176.14 min, shortened by 63.3% compared with previous works. Furthermore, most of the biodiesel properties agreed the quality requirements established by Official Regulations of GB/25199-2017 of China.
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