Utilization of cyanobacteria in photobioreactors for orthophosphate removal from water.
Appl Biochem Biotechnol
; 91-93: 185-93, 2001.
Article
em En
| MEDLINE
| ID: mdl-11963847
ABSTRACT
The effectiveness of photosynthetic free-living and polyurethane foam (PU) immobilized Anabaena variabilis cells for removal of orthophosphate (P) from water in batch cultures and in a photobioreactor was studied. Immobilization in PU foams was found to have a positive effect on P uptake by cyanobacteria in batch cultures. The efficiency of P uptake by immobilized cells was higher than by free-living cells. A laboratory scale photobioreactor was constructed for removal of P from water by the immobilized cyanobacteria. The photobioreactor was designed so that the growth medium (water) from a reservoir was pumped through a photobioreactor column with immobilized cyanobacteria and back to the reservoir. This created a closed system in which it was possible to measure P uptake. No leakage of cells into the photobioreactor medium reservoir was observed during the operation. The immobilized cells incorporated into a photobioreactor column removed P continuously for about 15 d. No measurable uptake was demonstrated after this period. Orthophosphate uptake efficiency of 88-92% was achieved by the photobioreactor.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfatos
/
Poluentes Químicos da Água
/
Anabaena
/
Reatores Biológicos
Idioma:
En
Revista:
Appl Biochem Biotechnol
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Estados Unidos