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  • direct liquefaction of dunaliella tertiolecta for bio-oil in sub/supercritical ethanol–water

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 653
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper presents bio-oil preparation by direct liquefaction of dunaliella tertiolecta (d. tertiolecta) with sub/supercritical ethanol–water as the medium in a batch autoclave with high temperature and high pressure. the results indicated that ethanol and water showed synergistic effects on direct liquefaction of d. tertiolecta. the maximum bio-oil yield was 64.68%, with an optimal d. tertiolecta conversion of 98.24% in sub/supercritical ethanol–water. the detailed chemical compositional analysis of the bio-oil was performed using an ea, ft-ir, and gc–ms. the empirical formulas of the bio-oil obtained using the ethanol–water co-solvent (40%, v/v) and sole water as the reaction medium were ch1.52o0.14n0.06 and ch1.43o0.23n0.09, with calorific values of 34.96 and 29.80 mj kg−1, respectively. xps and sem results showed that ethanol–water is a very effective reaction medium in the liquefaction. a plausible reaction mechanism of the main chemical component in d. tertiolecta is proposed based on our results and the literatures.

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