Characteristics of vacuum fractional distillation from pyrolytic macroalgae (<i>Saccharina japonica</i>) bio-oil

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>Crude bio-oil from the brown alga <I>Saccharina japonica</I> was separated into distilled fractions under reduced pressure (40mmHg). The three bio-oil distillates were depending on temperature (Fraction I; ≤40°C, Fraction II; 40–120°C, Fraction III; 120–160°C, solid residue; b.p.>160°C). The characteristic of the middle distillates showed that aliphatics (including alkanes) and aromatics (including heterocyclics) were mostly distributed in a dark hydrophobic oil (DHO) of Fractions II and III, while anhydrosugars, acids, ketones and ethers were mainly concentrated in a transparent hydrophilic oil (THO) of Fractions II and III.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Pyrolytic bio-oil from brown alga <I>S. japonica</I> was distilled under reduced pressure. </LI> <LI> The three bio-oil distillates were fractionated in the range of 25–160°C at 40mmHg. </LI> <LI> Most aromatic was included in dark hydrophobic oil at top layers of Fractions II and III. </LI> <LI> Fuel properties of OFDB and its mixture with No. 6 fuel oil could be used as fuels in burners or combustion engines. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Component distributions of bio-oil distillates from the pyrolysis of macroalgae <I>Saccharina japonic</I>.</P> <P>[DISPLAY OMISSION]</P>