Open AccessBiodiesel Production from Microalgae with Trans-esterification Method Using Microwave
Author(s) -
Lailatul Qadariyah,
Fatkhulloh Mujaddid,
Donny Satria Bhuana,
Mahfud Mahfud
Publication year - 2019
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/543/1/012073
Subject(s) - biodiesel , catalysis , biodiesel production , stearic acid , yield (engineering) , methanol , oleic acid , chemistry , extraction (chemistry) , palmitic acid , algae fuel , fatty acid , solvent , microwave , organic chemistry , acid value , biofuel , materials science , biochemistry , microbiology and biotechnology , biology , physics , quantum mechanics , metallurgy
Microalgae has a highly potential to be biodiesel fuel due to its high lipid content. The research used Nannochloropsis oculata microalgae refer to high lipid content (approximately 68%). The objectives of this research are to study edible oil extraction process from Nannochloropsis oculata , to study the effect of microwave on biodiesel yield using KOH catalyst, time reaction as well as catalyst percentage. The trans-esterification process was carried out on microwave with lipid molar-methanol comparison of 1:10, microwave power, reaction time and catalyst composition were also varied. It was found that the addition of co-solvent (addition n-hexane) seems to give the best result in terms of yield, i.e. 54.19%, which was obtained at a 600-watt microwave power, reaction time of 40 min, and 2.5% catalyst concentration. The fatty acid consists of several major constituents, such as palmitic acid 84.81%, oleic acid 12.41% stearic acid 1.87% and linoleat 0.88%. It can be concluded from the study that the in-situ trans-esterification process is such an efficient method due to the short reaction time, less energy consumption and relatively efficient owing to the combined extraction and trans-esterification steps.