| 초록 |
We propose a cost-effective and energy-efficient CCU process using the unicellular green microalga, Haematococcus pluvialis, which is considered as the richest source of natural astaxanthin, the highest value ketocarotenoid. In order to establish economic H. pluvialis mass culture system, the industrial flue gases containing 3–5% CO2 from the combustion of Liquefied Natural Gas (LNG) in combined heat and power plants was directly used as carbon-feedstock to produce astaxanthin in H. pluvialis using a two-stage process which was successfully installed near the LNG combustion stack of the Korea District Heating Corporation (KDHC). We will expand the culture capacity based on closed PBR system to a 10 ton with the prospective effects of securing up to 50 tons of Certified Emission Reductions (CERs) a year, producing 6,000 kg of an antioxidant carotenoid astaxanthin yearly.
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