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Effects of sodium bicarbonate as an inorganic carbon source on the growth of scenedesmus dimorphus

무기탄소원으로서의 NaHCO3가 미세조류 Scenedesmus dimorphus의 성장에 미치는 영향 평가

  • Joo, Sung-Jin (Department of Environmental Engineering, Kyung Hee University) ;
  • Zhang, Shan (Department of Environmental Engineering, Kyung Hee University) ;
  • Choi, Kyoung Jin (Department of Environmental Engineering, Kyung Hee University) ;
  • Lee, SeokMin (Department of Environmental Engineering, Kyung Hee University) ;
  • Hwang, Sun-Jin (Department of Environmental Engineering, Kyung Hee University)
  • Received : 2014.08.19
  • Accepted : 2014.10.10
  • Published : 2014.10.15

Abstract

This study investigates the effect of sodium bicarbonate ($NaHCO_3$) on growth of S.dimorphus. $NaHCO_3$ concentration 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 algae. The highest specific growth rate of S. dimorphus was $0.36day^{-1}$ 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.

Keywords

Acknowledgement

Supported by : 한국연구재단

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