| 초록 |
Among the various CO2 capture and utilization (CCU) systems, photoautotrophic mass cultivation of microalgae is the most promising strategy for reducing CO2 from an industrial flue gas with the production of high value compounds. Herein, we suggest a cost-effective and energy-efficient CCU process by using Haematococcus pluvialis, which is considered as the richest source of natural astaxanthin and the highest value ketocarotenoid. In order to establish economic H. pluvialis mass culture system, the industrial flue gases containing 3–5% CO2 was directly used as carbon-feedstock to produce astaxanthin in H. pluvialis by using a two-stage process which was installed near the LNG combustion stack of the Korea District Heating Corporation. We developed a low-cost thin-film photobioreactor system with a vertical bubble column providing a viable option for direct capture and utilization of concentrated CO2 emitted from power plants due to ease of scale-up and efficient capture of CO2. |
