Ruangsomboon, Suneerat

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Ruangsomboon, Suneerat
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suneerat.ru@kmitl.ac.th

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    Item type:Publication,
    Enhanced growth and hydrocarbon production of Botryococcus braunii KMITL 2 by optimum carbon dioxide concentration and concentration-dependent effects on its biochemical composition and biodiesel properties
    (2017-01-01)
    Ruangsomboon, Suneerat
    ;
    Prachom, Noratat
    ;
    Sornchai, Piyanast
    The purposes of this study were to find the optimum level of supplementing CO<inf>2</inf> for increasing the biomass and hydrocarbon production of B. braunii KMITL 2 (A race) and to determine the effects of CO<inf>2</inf> level on CO<inf>2</inf> fixation and biodiesel properties. The experimental results showed that the alga supplemented with 10% CO<inf>2</inf> produced the highest biomass (1.48 ± 0.02 g L<sup>−1</sup>) and CO<inf>2</inf> fixation rate (100.43 ± 1.42 mg L<sup>−1</sup> d<sup>−1</sup>) that were 2.7 and 5.3 times higher than the control (0.04% CO<inf>2</inf>). The gravimetric hydrocarbon content (36.82 ± 3.39%) and hydrocarbon titer (0.35 ± 0.03 g L<sup>−1</sup>) of the alga supplemented with 5% CO<inf>2</inf> were 1.6 and 2.7 times higher than the control. Cultivation of this strain under 5% CO<inf>2</inf> gave the highest hydrocarbon yield and good biodiesel properties with the lowest iodine value and a higher CN value than the ASTM D6751 and EN 14214 fuel standards.