The Production of Hydrocarbons from Photoautotroph

Authors: DonHee Park HwaWon Ruy KiYoung Lee ChoonHyoung Kang TaeHo Kim HyeonYong Lee

Publish Date: 1998

Volume: , Issue: , Pages: 739-746

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Abstract

Microalga Dunaliella salina 1650 was selected to produce hydrocarbons that may possibly substitute for fossil fuels in the near future It can produce 022 mg/L of hydrocarbons over 20 d batch cultivation maintaining 132 gdry wt/L of cell density Its productivity was similar to that from Botryococcus braunii which was known to economically produce liquid fuels Optimal growth conditions for the alga were also determined as pH 72 28°C and 000034 Kcal/cm2/h of light intensity It was shown that the hydrocarbon production from the alga was closely related to cell growth except for the later periods of batch cultivation Better hydrocarbon production was observed during light periods in light/dark cycle cultivation Under chemostat conditions maximum steady cell concentration was maintained as 11 gdry wt/L at 012 1/d of dilution rate The system reached to the steady state after 30 d of the cultivation The maximum specific hydrocarbon production rate 0024 mg/cell/d was also obtained under this condition It proves that the hydrocarbon production from D salina 1650 can compete with that from B braunii

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