Impact of salinity on the kinetics of CO2 fixation by Spirulina platensis cultivated in semi-continuous photobioreactors
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Universidade Estadual Paulista Júlio de Mesquita Filho
2021
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876459383461773312 |
|---|---|
| author | Javier Christian Ramirez-Perez |
| author_facet | Javier Christian Ramirez-Perez |
| contents | Impact of salinity on the kinetics of CO2 fixation by Spirulina platensis cultivated in semi-continuous photobioreactors Javier Christian Ramirez-Perez Harry Wiliam Janes Química photoinhibition salinity stress Spirulina platensis specific growth rate microalgae kinetic models In this research, the physiological response of the microalgae Spirulina platensis to salinity stress (1 and 100 g L-1) was investigated. Spirulina platensis and S. platensis (adapted to high salt concentration) were operated at laboratory scale in a semi-continuous photobioreactors. The responses examined were within 0.5 to 10% CO2 concentration, temperatures from 10 to 40 °C, light intensities from 60 to 200 μmol m-2 s-1 and presented better results in terms of all kinetic parameters. The highest rate of CO2 biofixation for S. platensis was 25.1 gCO2 m-3 h-1, and the maximum specific growth (μmax) achieved was 0.44 d-1 - 0.67 d-1 at 2.5% CO2, 150 µmol m-2 s-1 at 25 °C. Corresponding determined values of S. platensis adapted were 18.2 gCO2 m-3 h-1, 0.31 d-1 - 0.58 d-1 at 2.5% CO2, 60 µmol s-1 m-2 and 28 °C. However, both microalgae exhibited experimental limiting growth factors, CO2 10%, 40 °C and 200 µmol m-2 s-1, conditions under which photosynthetic CO2 biofixation may be inhibited and photoinhibition of photosynthesis may be enhanced by salinity. The efficiency of 2.5% CO2 removal by Spirulina platensis achieved 99%, whereas Spirulina platensis adapted to 96%, respectively. The kinetic parameters estimated for Spirulina platensis can be used to improve photobioreactor design for reducing of atmospheric carbon dioxide. 2021 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42965151003 https://www.redalyc.org/journal/429/42965151003/ https://www.redalyc.org/journal/429/42965151003/html/ https://www.redalyc.org/journal/429/42965151003/42965151003.epub https://www.redalyc.org/journal/429/42965151003/movil https://doi.org/10.26850/1678-4618eqj.v46.1.2021.p21-34 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.1 Vol.46 |
| format | Artículo científico |
| id | redalyc_42965151003 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Universidade Estadual Paulista Júlio de Mesquita Filho |
| spellingShingle | Impact of salinity on the kinetics of CO2 fixation by Spirulina platensis cultivated in semi-continuous photobioreactors Javier Christian Ramirez-Perez Química photoinhibition salinity stress Spirulina platensis specific growth rate microalgae kinetic models Impact of salinity on the kinetics of CO2 fixation by Spirulina platensis cultivated in semi-continuous photobioreactors Javier Christian Ramirez-Perez Harry Wiliam Janes Química photoinhibition salinity stress Spirulina platensis specific growth rate microalgae kinetic models In this research, the physiological response of the microalgae Spirulina platensis to salinity stress (1 and 100 g L-1) was investigated. Spirulina platensis and S. platensis (adapted to high salt concentration) were operated at laboratory scale in a semi-continuous photobioreactors. The responses examined were within 0.5 to 10% CO2 concentration, temperatures from 10 to 40 °C, light intensities from 60 to 200 μmol m-2 s-1 and presented better results in terms of all kinetic parameters. The highest rate of CO2 biofixation for S. platensis was 25.1 gCO2 m-3 h-1, and the maximum specific growth (μmax) achieved was 0.44 d-1 - 0.67 d-1 at 2.5% CO2, 150 µmol m-2 s-1 at 25 °C. Corresponding determined values of S. platensis adapted were 18.2 gCO2 m-3 h-1, 0.31 d-1 - 0.58 d-1 at 2.5% CO2, 60 µmol s-1 m-2 and 28 °C. However, both microalgae exhibited experimental limiting growth factors, CO2 10%, 40 °C and 200 µmol m-2 s-1, conditions under which photosynthetic CO2 biofixation may be inhibited and photoinhibition of photosynthesis may be enhanced by salinity. The efficiency of 2.5% CO2 removal by Spirulina platensis achieved 99%, whereas Spirulina platensis adapted to 96%, respectively. The kinetic parameters estimated for Spirulina platensis can be used to improve photobioreactor design for reducing of atmospheric carbon dioxide. 2021 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42965151003 https://www.redalyc.org/journal/429/42965151003/ https://www.redalyc.org/journal/429/42965151003/html/ https://www.redalyc.org/journal/429/42965151003/42965151003.epub https://www.redalyc.org/journal/429/42965151003/movil https://doi.org/10.26850/1678-4618eqj.v46.1.2021.p21-34 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.1 Vol.46 |
| title | Impact of salinity on the kinetics of CO2 fixation by Spirulina platensis cultivated in semi-continuous photobioreactors |
| topic | Química photoinhibition salinity stress Spirulina platensis specific growth rate microalgae kinetic models |
| url | https://www.redalyc.org/articulo.oa?id=42965151003 https://www.redalyc.org/journal/429/42965151003/ https://www.redalyc.org/journal/429/42965151003/html/ https://www.redalyc.org/journal/429/42965151003/42965151003.epub https://www.redalyc.org/journal/429/42965151003/movil https://doi.org/10.26850/1678-4618eqj.v46.1.2021.p21-34 |