Spirulina platensis growth in open raceway ponds using fresh water supplemented with carbon, nitrogen and metal ions.
To investigate the feasibility of using fresh water from Mangueira Lagoon (Rio Grande do Sul, Brazil) for biomass production in open raceway ponds (0.7 m long, 0.18 m wide, 0.075 m deep) we studied the influence of nutrient addition (carbon as sodium bicarbonate, nitrogen as urea, phosphate, sulfate, ferric iron, magnesium and potassium) on the growth rate of the cyanobacteria Spirulina platensis using a 22 factorial design. In unsupplemented lagoon water production of S platensis was 0.78 +/- 0.01 g/l (dry weight basis) while the addition of 2.88 g/l of sodium bicarbonate (without added urea, phosphate, sulfate or metal ions) resulted in 0.82 +/- 0.01 g/l after 400 hours of culture. The further addition of phosphate and metal ions resulted in growth for up to 750 h and a final S. platensis biomass of 1.23 +/- 0.04 to 1.34 +/- 0.03 g/l.
Costa
Jorge Alberto Vieira
JA
Laboratório de Engenharia Bioquímica, Departamento de Química, Fundação Universidade Federal do Rio Grande, Caixa Postal 474, CEP 96201-900, Rio Grande, RS, Brasil. dqmjorge@furg.br
Colla
Luciane Maria
LM
Duarte Filho
Paulo
P
D001938:Brazil; D002244:Carbon; D003470:Culture Media; D000458:Cyanobacteria / Q000187:drug effects / Q000254:growth & development*; D005618:Fresh Water; D007477:Ions; D007700:Kinetics; D008670:Metals; D009584:Nitrogen; D017693:Sodium Bicarbonate / Q000494:pharmacology
D003470:Culture Media; D007477:Ions; D008670:Metals; D002244:Carbon; D017693:Sodium Bicarbonate; D009584:Nitrogen