Abstract
Growth characteristics of Scenedesmus quadricauda were studied under various nutrient concentrations. Cultivation were carried at 27°C in a 14h light/10h dark cycle with coolwhite fluorescent lamps of 3, 000lux. The progresive removals of nitrogen and phosphorus in the medium were determined.
In the nitrate culture media, nitrite was found during the algal growth. S. quadricauda preferred to utilize ammonium ion rather than nitrate ion. The pH of medium rapidly decreased with the growth on an ammonium containing media and the growth of S. quadricauda was inhibited at low pH.S.quadricauda required 6.8μg-at/l (0.095mg/l) of nitrogen, and 0.66μg-at/l (0.020mg/l) of phosphorus for 1mg/l of algal growth.
