Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of light supply on $ CO_{2} $ capture from atmosphere by Chlorella vulgaris and Pseudokirchneriella subcapitata
Abstract Carbon dioxide ($ CO_{2} $) is one of the primary greenhouse gases that contribute to climate change. Consequently, emission reduction technologies will be needed to reduce $ CO_{2} $ atmospheric concentration. Microalgae may have an important role in this context. They are photosynthetic microorganisms that are able to fix atmospheric $ CO_{2} $ using solar energy with efficiency ten times higher than terrestrial plants. The objectives of this study were: (i) to analyse the effect of light supply on the growth of Chlorella vulgaris and Pseudokirchneriella subcapitata; (ii) to assess the atmospheric $ CO_{2} $ capture by these microalgae; and (iii) to determine the parameters of the Monod model that describe the influence of irradiance on the growth of the selected microalgae. Both microalgae presented higher growth rates with high irradiance values and discontinuous light supply. The continuous supply of light at the highest irradiance value was not beneficial for C. vulgaris due to photooxidation. Additionally, C. vulgaris achieved the highest $ CO_{2} $ fixation rate with the value of 0.305 g-$ CO_{2} $ $ L^{−1} $ $ d^{−1} $. The parameters of the Monod model demonstrated that C. vulgaris can achieve higher specific growth rates (and higher $ CO_{2} $ fixation rates) if cultivated under higher irradiances than the studied values. The presented results showed that microalgal culture is a promising strategy for $ CO_{2} $ capture from atmosphere.
Effect of light supply on $ CO_{2} $ capture from atmosphere by Chlorella vulgaris and Pseudokirchneriella subcapitata
Abstract Carbon dioxide ($ CO_{2} $) is one of the primary greenhouse gases that contribute to climate change. Consequently, emission reduction technologies will be needed to reduce $ CO_{2} $ atmospheric concentration. Microalgae may have an important role in this context. They are photosynthetic microorganisms that are able to fix atmospheric $ CO_{2} $ using solar energy with efficiency ten times higher than terrestrial plants. The objectives of this study were: (i) to analyse the effect of light supply on the growth of Chlorella vulgaris and Pseudokirchneriella subcapitata; (ii) to assess the atmospheric $ CO_{2} $ capture by these microalgae; and (iii) to determine the parameters of the Monod model that describe the influence of irradiance on the growth of the selected microalgae. Both microalgae presented higher growth rates with high irradiance values and discontinuous light supply. The continuous supply of light at the highest irradiance value was not beneficial for C. vulgaris due to photooxidation. Additionally, C. vulgaris achieved the highest $ CO_{2} $ fixation rate with the value of 0.305 g-$ CO_{2} $ $ L^{−1} $ $ d^{−1} $. The parameters of the Monod model demonstrated that C. vulgaris can achieve higher specific growth rates (and higher $ CO_{2} $ fixation rates) if cultivated under higher irradiances than the studied values. The presented results showed that microalgal culture is a promising strategy for $ CO_{2} $ capture from atmosphere.
Effect of light supply on $ CO_{2} $ capture from atmosphere by Chlorella vulgaris and Pseudokirchneriella subcapitata
Pires, J. C. M. (Autor:in) / Gonçalves, A. L. (Autor:in) / Martins, F. G. (Autor:in) / Alvim-Ferraz, M. C. M. (Autor:in) / Simões, M. (Autor:in)
2013
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
43.47
Globale Umweltprobleme
/
43.47$jGlobale Umweltprobleme