Physicochemical Properties Of Biodiesle Product Derived From Lard Oil Using Eggshells As A Green Catalyst

Eggshells-derived CaO was used as a catalyst for biodiesel production from lard oil via transesterification reaction. The eggshell materials were calcined in air with the hydrothermal synthesis route at 800 degrees C for 3 h. Conversion of lard oil to biodiesel product (fatty acid ethyl ester; FAME) was higher than 97% by using methanol to oil molar ratio of 15:1, catalyst loading amount of 5 wt.%, reaction temperature of 65 degrees C and reaction time for 3 h. Physicochemical properties of biodiesel product prepared form lard oil were evaluated according the main property for bio-auto fuels both the ASTM and EN standards namely kinematic viscosity at 40 degrees C, oxidation stability, methyl ester content, acid number, pour point, cloud point and thermal stability decomposition. All of the physicochemical properties of lard oil biodiesel were compared with palm oil biodiesel, rubber seed oil biodiesel and petroleum diesel. The results in this research showed that lard oil derived biodiesel product has high quality property than palm oil biodiesel and rubber seed oil biodiesel. Therefore, lard oil is one of the attractive candidate feedstock for biodiesel production in Thailand because of inexpensiveness, high potentiality and produced high grade biodiesel product.