期刊
ENERGIES
卷 12, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/en12091718
关键词
LNG-fired waste CO2; microalgal CO2 sequestration; Haematococcus pluvialis; astaxanthin; HClO-based pure culture process; compliance validation testing; poultry feed test
资金
- Energy Demand Management Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry and Energy, Republic of Korea [20172010202050]
- Future Development Institute - Korea District Heating Corporation (KDHC) [KDHC-1003542018S075]
The combinatorial approach of anthropogenic activities and CO2 sequestration is becoming a global research trend to alleviate the average global temperature. Although microalgae have been widely used to capture CO2 from industrial flue gas, the application of bioproducts was limited to bioenergy due to the controversy over the quality and safety of the products in the food and feed industry. Herein, the waste CO2 emitted from large point sources was directly captured using astaxanthin-hyperproducing microalgae Haematococcus pluvialis. Astaxanthin production was successfully carried out using the hypochlorous acid water-based axenic culture process under highly contamination-prone outdoor conditions. Consequently, after 36 days of autotrophic induction, the productivity of biomass and astaxanthin of H. pluvialis (the mutant) reached 0.127 g L-1 day(-1) and 5.47 mg L-1 day(-1) under high summer temperatures, respectively, which was 38% and 48% higher than that of wild type cell. After grinding the wet astaxanthin-enriched biomass, the extract was successfully approved by compliance validation testing from Korea Food and Drug Administration. The assorted feed improved an immune system of the poultry without causing any side effects. The flue gas-based bioproducts could certainly be used for health functional food for animals in the future.
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