Abstract
Abstract : This study investigates the effect of sodium bicarbonate (NaHCO 3 ) on growth of S.dimorphus. NaHCO 3 concentra-tion was varied from 0 to 2 g-C/L. As a result, the increase in concentration of NaHCO 3 up to 1.5 g-C/L increased dry weight of al-gae. The highest specific growth rate of S. dimorphus was 0.36 day -1 which was obtained at concentration of 0.5 g-C/L NaHCO 3 . pH showed a large variation range at the concentrations lower than 0.5 g-C/L NaHCO 3 whereas inorganic carbon, nitrate and phosphorus removal rates were almost same at the concentrations higher than 0.5 g-C/L NaHCO 3 (0.75, 1, 1.25, 1.5, 2 g-C/L NaHCO 3 ). 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, NaHCO 3 didn’t effect on inorganic carbon, nitrate and phosphorus removal rate of S. dimorphus. Key words : Microalgae, Scenedesmus dimorphus, Sodium bicarbonate, Inorganic carbon source, Specific growth rate주제어 : 미세조류, 세네데스무스 디모르푸스, 탄산수소나트륨, 무기탄소원, 비성장속도
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