• Title/Summary/Keyword: 세네데스무스 디모르푸스

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Effects of light condition in the continuous mass cultivation of microalgae Scenedesmus dimorphus (미세조류 Scenedesmus dimorphus 연속 대량배양 운전에 있어 광 조건이 성장에 미치는 영향)

  • Joo, Sung-jin;Hwang, Hyeon-jeong;Zhang, Shan;Hwang, Sun-Jin
    • Journal of Korean Society of Water and Wastewater
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    • v.29 no.3
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    • pp.319-323
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    • 2015
  • This study investigated the effects of the light conditions on the productivity of scenedesmus dimorphus in the continuous mass cultivation system. To compare the algal productivity according to the light conditions, S. dimorphus was cultivated continuously under the wide range of light intensity(200-600 PPFD) and various light wavelength(white light and red-blue mixed light). After 100 days of cultivation under the different light intensity, the productivity of S. dimorphus increased as light intensity decreased. So, the productivity was maximized as 100 mg/L/d when light intensity was 200 PPFD. In case of light wavelength, the productivity of S. dimorphus was enhanced about 20% with the white light compared to that of the red-blue mixed light. Consequently, the optimal light conditions for the continuous mass cultivation of S. dimorphus were 200 PPFD as light intensity and white light as light wavelength.

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;Zhang, Shan;Choi, Kyoung Jin;Lee, SeokMin;Hwang, Sun-Jin
    • Journal of Korean Society of Water and Wastewater
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    • v.28 no.5
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    • pp.555-560
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    • 2014
  • 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.