| 초록 |
Brown macro-algae as renewable energy resources have a large potential to convert into chemicals and biofuel energy by fast pyrolysis. The aim of this study is to fractionate the crude bio-oil derived from brown algae (Saccharina japonica) for biofuel source. Crude bio-oil was produced by fixed-bed pyrolysis, and then fractionated by solvent extraction using hexane. The result showed that three fractions were obtained: a non-aqueous oil (NAO), an aqueous oil (AO) and a residue oil (polymeric oil). Among different pretreated biomass (untreated, alcohol pretreated and water pretreated S. japonica), the yields of NAO were 15.9, 14.3 and 16.0 wt.%, respectively. And then the properties of the hexane extracted fractions were determined by FT-IR and NMR spectroscopy, and GC-MS. From the GC-MS and NMR data, it is known that the aliphatic compounds, benzenes, phenol and polycyclic aromatic hydrocarbons (PAHs) were primarily determined to be biofuel sources in the NAO. The HHV of mixture of bio-heavy fuel oil and NAO were higher than that of the conventional heavy fuel oil for power generation. |
