Open AccessEffect of nitrogen bubble for biodiesel production from used cooking oil
Author(s) -
Narinthorn Wiriya,
Rungrote Kokoo,
Kittisak Wichianwat,
Prayut Jiamrittiwong,
Thanarak Srisurat
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/736/2/022026
Subject(s) - raw material , biodiesel production , transesterification , biodiesel , sunflower oil , process engineering , bubble , pulp and paper industry , environmental science , waste management , renewable energy , nitrogen , materials science , mixing (physics) , chemistry , engineering , methanol , organic chemistry , catalysis , computer science , biochemistry , physics , quantum mechanics , parallel computing , electrical engineering
Biodiesel is alternative energy produced using natural raw materials. The famous reaction used to produce biodiesel is transesterification. In the commercial scale, the mixing process is the crucial step for transesterification. Electric stirring motor used to mix raw materials in the conventional process consumes a lot of energy. This results in high production cost. In this research, bubbling technique was used to replace the electric stirring motor. Waste nitrogen gas obtained from the gas separation industry was fed to the bubble column filled with used sunflower oil and other reactants. Microbubbles of nitrogen gas were generated in the column. The results showed that the product yields obtained from the stirring technique is higher than the bubbling technique by 2.63% at the same operating time. In case of energy consumption, the bubbling technique can reduce electricity used by 50% compared with the stirring technique.