Merck

Control of CO₂ input conditions during outdoor culture of Chlorella vulgaris in bubble column photobioreactors.

Bioresource technology (2015-03-31)
Zhi Guo, Wei Boon Alfred Phooi, Zi Jian Lim, Yen Wah Tong
RESUMEN

A study on the optimization of CO2 usage during outdoor microalgae cultivation in order to further maximize the CO2 to biomass conversion efficiency is presented. A constant supply of CO2 was found to be non-essential for culturing microalgae outdoors in 80 L (8 L×10 sets) bubble columns. Among the different CO2 input conditions that were studied, 2% CO2 with intermittent supply and 2%+4% CO2 alternation did not affect the algal growth as compared to having a constant supply of 2% CO2. However, during both input conditions, the CO2 to biomass conversion efficiency was doubled while the amount of CO2 used was reduced by 50%. The algal biomass obtained was found to have a higher carbohydrate yield but a lower protein yield as compared to previously published studies. The findings from this study could be applied for large-scale microalgae production so as to minimize cultivation and energy costs.

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Supelco
Hexane, suitable for HPLC, ≥95%
Supelco
Hexane, analytical standard
Sigma-Aldrich
Hexane, puriss. p.a., ACS reagent, ≥99.0% (GC)
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Hexane, anhydrous, 95%
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Hexane, HPLC Plus, for HPLC, GC, and residue analysis, ≥95%
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Hexane, Laboratory Reagent, ≥95%
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Hexane, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)
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Hexane, ReagentPlus®, ≥99%
Sigma-Aldrich
Hexane, suitable for HPLC, ≥97.0% (GC)
Sigma-Aldrich
Hexane, suitable for HPLC, ≥95%
Sigma-Aldrich
Hexane, HPLC Plus, for HPLC, GC, and residue analysis, ≥95%