알칼리 촉매에 의한 우지(Beef Tallow)와 그 혼합지방의 Biodiesel화

Conversion of Beef Tallow and Its Mixed Fat into Biodiesel by Alkali Catalysts

The transesterifications of beef tallow and the mixture of beef tallow and rapeseed oil were conducted at 65^{circ}C respectively using TMAH, NaOH and their mixed catalysts. The reactants were emulsified with 1vol% emulsifier and propylene glycol. The overall conversion of beef tallow was 95% at such optimum conditions as the 1:8 of molar ratio and 0.8 wt% TMAH. The overall conversion of mixed fat at the 1:8 of molar ratio and mixed catalyst of 70 wt% TMAH 30 wt% NaOH was close to 97% which appeared at 0.8 wt% TMAH in 80min. And the kinematic viscosity of biodiesel mixture using the mixed catalyst was 6.5mm^2/s at 40^{circ}C.