naa a22 4500 510820794 CHVBK 20180411083530.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11814-013-0081-0 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0081-0 Optimum conditions for cultivation of Chlorella sp. FC-21 using light emitting diodes [Elektronische Daten] [Boram Choi, Jun-Heok Lim, Jaekeun Lee, Taeyoon Lee] The purpose of this study was to determine the optimum conditions for the cultivation of Chlorella sp. FC-21 under light-emitting diodes (LEDs). Specific growth rates and Chlorella cell concentrations were measured when they were grown under different LED wavelengths (red, blue, white, and mixed). The red LEDs were the most effective light source as determined by increases in specific growth rates and cell concentrations. Cell concentrations increased as light intensity was increased; however, the specific growth rate decreased as the initial cell concentration rose due to the shading effect of cells in the reactor. To determine if aeration is beneficial during cell cultivation, micro-air bubbles were aerated at 0.70 vvm in the reactor under red LED illumination. Aeration led to two- and ten-times greater specific growth rates. Our findings show that red LEDs with aeration are optimal for cultivation of Chlorella sp. FC-21. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Light-emitting Diodes nationallicence Chlorella sp. FC-21 nationallicence Red LEDs nationallicence Carbon Dioxide nationallicence Photobioreactor nationallicence Choi Boram Department of Environmental Engineering, Pukyong National University, Daeyeon3-dong, 608-737, Busan, Korea aut Lim Jun-Heok Department of Chemical Engineering, Pukyong National University, 365, Sinsun-ro, 608-739, Busan, Korea aut Lee Jaekeun Department of Environmental Engineering, Pukyong National University, Daeyeon3-dong, 608-737, Busan, Korea aut Lee Taeyoon Department of Environmental Engineering, Pukyong National University, Daeyeon3-dong, 608-737, Busan, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/8(2013-08-01), 1614-1619 0256-1115 30:8<1614 2013 30 11814 https://doi.org/10.1007/s11814-013-0081-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0081-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Boram Department of Environmental Engineering, Pukyong National University, Daeyeon3-dong, 608-737, Busan, Korea aut NATIONALLICENCE 700 1- Lim Jun-Heok Department of Chemical Engineering, Pukyong National University, 365, Sinsun-ro, 608-739, Busan, Korea aut NATIONALLICENCE 700 1- Lee Jaekeun Department of Environmental Engineering, Pukyong National University, Daeyeon3-dong, 608-737, Busan, Korea aut NATIONALLICENCE 700 1- Lee Taeyoon Department of Environmental Engineering, Pukyong National University, Daeyeon3-dong, 608-737, Busan, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/8(2013-08-01), 1614-1619 0256-1115 30:8<1614 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer