Effect of Ammonium Salt on the Growth of Spirulina platensis
铵盐对螺旋藻生长的影响

The effects of different concentrations of ammonium sulphate and ammonium acetate in the medium on the growth of Spirulina platensis were studied. The results showed that the ammonium salts as nitrogenous resources can be used by S. platensis effectively. The endurable concentrations of ammonium sulphate and ammonium acetate by S. platensis were 0.5 and 0.6 g/L, and related concentrations of NH4+-N were 212 and 109 mg/L, removal efficiencies of NH4+-N were 85.38% and 99.7% respectively. The content of protein was increased markedly when ammonium acetate was added to the medium.