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pp.555-560
This study investigates the effect of sodium bicarbonate (NaHCO3) on growth of S. dimorphus. NaHCO3 concentration was varied from 0 to 2 g-C/L. As a result, the increase in concentration of NaHCO3 up to 1.5 g-C/L increased dry weight of algae. The highest specific growth rate of S. dimorphus was 0.36 day-1 which was obtained at concentration of 0.5 g-C/L NaHCO3. pH showed a large variation range at the concentrations lower than 0.5 g-C/L NaHCO3 whereas inorganic carbon, nitrate and phosphorus removal rates were almost same at the concentrations higher than 0.5 g-C/L NaHCO3 (0.75, 1, 1.25, 1.5, 2 g-C/L NaHCO3). Their average inorganic carbon, nitrate and phosphorus removal rate were 70 mg-C/L/d, 11.3 mg-N/L/d, and 1.6 mg-P/L/d, respectively. Thus, NaHCO3 didn’t effect on inorganic carbon, nitrate and phosphorus removal rate of S. dimorphus.
