| Journal: | Ecletica quimica |
| Database: | |
| System number: | 000552469 |
| ISSN: | 0100-4670 |
| Authors: | Ramirez-Perez, Javier Christian1 Janes, Harry2 |
| Institutions: | 1University of Sao Paulo, Institute of Physics, Laboratory of Archaeometry and Science Applied to Cultural Heritage, Sao Paulo, São Paulo, BrazilRutgers The State University of New Jersey, Biotechnology Center for Agriculture and the Environment, Department of Plant Biology and Pathology, New Brunswick, New Jersey, United States., 2Rutgers The State University of New Jersey, Biotechnology Center for Agriculture and the Environment, Department of Plant Biology and Pathology, New Brunswick, New Jersey, United States., |
| Year: | 2021 |
| Volumen: | 46 |
| Number: | 1 |
| Pages: | 21-34 |
| Country: | Brasil |
| Language: | Inglés |
| English abstract | 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 Spirulina 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 oC, 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 Spirulina 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 oC. Corresponding determined values of Spirulina 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 oC. However, both microalgae exhibited experimental limiting growth factors, CO2 10%, 40 oC 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. |
| Full text: | Texto completo (Ver PDF) |
