Direct production of biodiesel from renewable oils using calcined blast furnace dust
星期三, 19 5 月, 2021Direct production of biodiesel from renewable oils using calcined blast furnace dust
Recently, Dr Ms. Yi-Tong Wang (Associate Professor, College of Metallurgy and Energy, North China University of Science and Technology) and Prof. Zhen Fang published an article in Renewable Energy using calcined blast furnace dust as catalyst material for biodiesel production.
Direct production of biodiesel by both esterification and transesterification of renewable oils with acid value (AV) of 9.6-28.9 mg KOH/g using calcined blast furnace dust is studied. Blast furnace dust calcined at 600-700 oC obviously promotes efficient biodiesel production because of the crystal form transformation from lead sulfate particles in dust into active lead oxide, lead sulfide, and lead particles. It is found for the first time that lead oxide, lead sulfide and lead particles can resist saponification from fatty acids to catalyze raw renewable oils to biodiesel with catalytic activity order as follows: lead oxide > lead > lead sulfide > lead sulfate. Biodiesel production process is optimized according to an orthogonal design with biodiesel yield of 92 wt% obtained at AV of 9.6 mg KOH/g (82 wt% after 5 cycles). Biodiesel yield of 84 wt% is achieved at AV of 28.9 mg KOH/g with acidity of 0.18 mmol/g. Calcined blast furnace dust presents potential applications in the production of biodiesel from renewable oils with high AVs.
Related results were published in Renewable Energy:
YT Wang, WJ Cong, YN Zeng*, YQ Zhang, JL Liang, JG Li, LQ Jiang*, Z Fang*. Direct production of biodiesel via simultaneous esterification and transesterification of renewable oils using calcined blast furnace dust. Renewable Energy. https://doi.org/10.1016/j.renene.2021.05.013 (2021).