Open AccessUse of hydrodynamic cavitation for esterification of free fatty acids in waste cooking oil
Author(s) -
Mochammad Rizal,
Nanda Suriaini,
Yanna Syamsuddin,
Muhammad Dani Supardan
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/845/1/012036
Subject(s) - biodiesel , transesterification , waste oil , methanol , biodiesel production , chemistry , catalysis , yield (engineering) , pulp and paper industry , cooking oil , sulfuric acid , organic chemistry , fatty acid , cavitation , chemical engineering , materials science , waste management , metallurgy , thermodynamics , engineering , physics
Esterification followed by transesterification process is widely applied for biodiesel production from oil with high free fatty acids (FFA) content to remove the FFA and increase the yield of biodiesel. The aim of this research was to study the esterification of waste cooking oil using the hydrodynamic cavitation apparatus. Waste cooking oil with initial FFA content 4.33% was esterified with methanol using sulfuric acid 1%-w/w as the catalyst. The reaction condition was kept constant for 120 minutes of total reaction time. At the best operating condition i.e. molar ratio of waste cooking oil to methanol 1:10 and reaction temperature 50 °C, the initial FFA of waste cooking oil 4.33% reduced to 0.76%. The experimental results also showed that the hydrodynamic cavitation had better performance than the conventional process using mechanical stirring.