Roles of illumination on distribution of phosphorus in Chlorella vulgaris under mixotrophic cultivation.
Chemosphere
; 303(Pt 1): 134904, 2022 Sep.
Article
em En
| MEDLINE
| ID: mdl-35561784
ABSTRACT
Phosphorus (P) is a non-substitutable resource and global reserves of phosphate rock are limited. In this study, phosphorus recovery by Chlorella vulgaris, and the effects of different light intensities (2000 Lux, 5000 Lux, 8000 Lux, 12,000 Lux) on the phosphorus distribution in the soluble microbial product (SMP), extracellular polymeric substance (EPS) and intracellular polymeric substance (IPS) were analyzed. The results showed that the 5000 Lux was the optimum light intensity for P uptake and transformation by Chlorella vulgaris under mixotrophic cultivation. At the light intensity of 5000 Lux, the P uptake rate was 100% after 32 days of cultivation, and the concentration of intracellular organic phosphorus (OP) was 5.77 mg P/L. Moreover, EPS was the main P pool when inorganic phosphorus (IP) was depleted in bulk solution. Phosphorus recovery by microalgae is an important solution to treat P-containing wastewater.
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Base de dados:
MEDLINE
Assunto principal:
Chlorella vulgaris
/
Microalgas
Idioma:
En
Revista:
Chemosphere
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China