The influence of some Ca(II) and Ba(II) with Co(II) compounds on the productivity of the cyanobacteria Spirulina platensis

The article includes experimental results related to the productivity of the Spirulina platensis (Nordst.) Geitl - CALU - 835 strain, which was cultivated for 8 days on modified nutrient media supplemented with two coordination compound containing Ca and Ba. A greater amount of biomass was recorded when growing spirulina on the Zarrouk culture medium supplemented with these coordination compounds in a concentration of 5 mg/L, accumulating a fresh biomass of about 13,3 g/L and 12,8 g/L, respectively, or about 14,5% and 9,9% higher than that accumulated by the witness.