Journal
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
Volume 46, Issue 3, Pages 267-273Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10826068.2015.1015569
Keywords
Carbon dioxide; growth rate; microalgae; outdoor; nutrition; photobioreactors
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Funding
- Thailand Research Fund (TRF) Royal Golden Jubilee PhD
- PTT Research and Technology Institute
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The cultivation of Scenedesmus armatus was carried out under outdoor Thailand climate conditions. The highest actual growth rate occurred at around 9:00a.m. to 3:00p.m., with a wide pH range of 6.4 to 11. The supply of CO2 had slight influence on growth characteristics but did exert some observable effects on nutritional accumulations. Adding CO2 from 2 to 15% by volume in the aeration (0.2 vvm) caused an increase in lipid and protein from 19.8 to 25.6 and 37.8 to 48.2% w/w, respectively, whereas carbohydrate decreased from 42.5 to 26.2% w/w. Scenedesmus armatus cultivated with 2% CO2-enriched air provided the highest the average of the average biomass productivity of 91.25mgL(-1) d(-1), which corresponded to a CO2 fixation of 165mg CO2 L-1 d(-1) with the average lipid, protein, and carbohydrate productivities of 22.24, 38.34, and 30.67mgL(-1) d(-1).
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