Evaluation of photosynthetic light integration by microalgae in a pilot-scale raceway reactor.
Bioresour Technol
; 280: 404-411, 2019 May.
Article
em En
| MEDLINE
| ID: mdl-30784990
ABSTRACT
The improvement of photosynthetic efficiency in a 100â¯m2 raceway reactor by enhancement of light regime to which the cells are exposed is here reported. From Computational Fluid Dynamics it was calculated that the light exposure times ranged from 0.4 to 3.6â¯s while the exposure times to darkness were much longer, from 6 to 21â¯s. It was demonstrated that these times are too long for light integration, the cells fully adapting to local irradiances. This phenomenon was validated in the real outdoor raceway at different seasons. Simulations allows to confirm that if total light integration is achieved biomass productivity can increase up to 40â¯g/m2·day compared to 29â¯g/m2·day obtained considering local adaptation, which is close to the experimental value of 25â¯g/m2·day. This paper provides clear evidence of microalgae cell adaptation to local irradiance because of the unfavourable cell movement pattern in raceway reactors.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fotossíntese
/
Microalgas
Idioma:
En
Revista:
Bioresour Technol
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Espanha