| 초록 |
Microalgal bioenergy can replace fossil energy and help reduce its greenhouse gas emissions. Hydrothermal liquefaction (HTL) of microalgae would be an attractive conversion method by the skipping energy intensive drying step for aquatic biomass. HTL of Tetraselmis sp. was investigated in a water subcritical range of temperatures (300-350℃) with various reaction times (up to 30 min) using batch type reactors. Four different product fractions (gas, biocrude, aqueous phase, and solid) were quantified and analyzed. As a results, fatty acids were the most abundant components in the biocrude, and N-containing compounds were increased as reaction temperature elevated. The obtained maximum weight biocrude oil yield was 44.7% of biomass at 300℃ and 10 min reaction time, the yield of energy returned as a biocrude was 60% of total energy of starting biomass. |
