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Masaji Suryo Jatmiko, Farys Adiya Azwar, Siti Zullaikah

Institut Teknologi Sepuluh Nopember
Jl. Raya ITS, Keputih, Kec. Sukolilo, Kota SBY, Jawa Timur 60111


Deep eutectic solvents (DESs) have been proposed as a replacement to toxic and volatile organic solvents in biodiesel production, used to minimize methanol inhibition effect and enhance the stability of enzyme with low cost so that make the overall process is feasible. In this work, we use low-cost deep eutectic solvents (DESs) a new solvent for biodiesel production from wet microalgae. An energy efficient extraction of alga lipids from wet alga biomass was performed at subcritical condition of water. Subcritical water using DES as co-solvent Choline Chloride and Acetic Acid of algae lipid from wet pastes of Chlorella vulgaris (water content is 80-90%) was examined to investigate the influence of co-solvent ratio (1:2, 1:3, 1:4, 1:5, 1:6), temperature extraction (T (oC) = 125, 140, 160, 180, 200), biomass to solvent ratio, and extraction time (t (min) = 15, 30, 45, 60, 120) on the yield of biodiesel produced. This process is effective on wet and unbroken paste of microalgae biomass, so the FAME extracted using one-step with DES process is feasible for microalgae based biodiesel production. Further we optimized the extraction process and studied on its underlying mechanism. Among all ratio, Choline chloride-Acetic acid DES treatment showed optimal conditions at the mass ratio of DES: ethanol: algae biomass was 20:8:1 with reaction time was 60 min.

Keywords: Microalgae, Lipid Extraction, Deep eutectic solvents, Subcritical Extraction

Topic: Chemical Engineering


Conference: Broad Exposure on Science and Technology (BEST 2019)

Plain Format | Corresponding Author (Masaji Suryo Jatmiko)

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