Effect of Carbon Dioxide Concentration on the Growth Response of Chlorella vulgaris Under Four Different Led Illumination
Pages 125-131
Sebastián Mejía Rendón, Gabriel Jaime Colmenares Roldan and R. Paul Voroney

DOI: http://dx.doi.org/10.6000/1927-3037.2013.02.03.3

Published: 30 September 2013

Abstract: This experiment examined the growth response of Chlorella vulgaris exposed to CO₂ concentrations increasing from ambient to 8.5% and under white, blue, red and red-blue lights after 15 days incubation. Biomass production increased with increasing CO₂ concentrations under all light sources. The highest biomass production, 1.59 g L^-1, was obtained when the algae were supplied with 8.5% CO₂ and exposed to white light. Biomass production under blue, red and red+blue light was 1.53 g L^-1, 0.45 g L^-1 and 1.27 g L^-1, respectively. The research suggests that C. vulgaris is not able to adapt production of its photosynthetic pigments to absorb light sources different that it is normally has evolved to.