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Enhancement of carbon dioxide fixation by alteration of illumination duringChlorella vulgaris-Buitenzorg's growth |
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| Authors: | Anondho Wijanarko Dianursanti Misri Gozan Sang Made Krisna Andika Paramita Widiastuti Heri Hermansyah Arief Budi Witarto Kazuhiro Asami Roekmijati Widaningroem Soemantojo Kazuhisa Ohtaguchi Song Seung Koo |
| Institution: | 1. Department of Chemical Engineering, University of Indonesia, Ul-Campus, 16424, Depok, Indonesia 2. Biotechnology Research Center, Indonesian Institute of Science, Jalan Raya Bogor KM 47, Cibinong-Bogor, Indonesia 3. Department of Chemical Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, 152, Tokyo, Japan 4. Division of Chemical Engineering, Pusan National University, 609-735, Busan, Korea |
| Abstract: | Alteration of illumination with optimum carbon dioxide fixation-based curve in this research successfully enhanced the CO2-fixation (qco2) capability ofChlorella vulgaris Buitenzorg cultivated in a bubble column photo bioreactor. The level of CO2 fixation was up to 1.91 times that observed from cultivation with intensification of illumination on an optimum growth-based curve. During 144 h of cultivation, alteration of light intensity on an optimum CO2-fixation-based curve produced a qCO2 of 6.68 h?1. Increases in light intensity based on a curve of optimum CO2-fixation produced a final cell concentration of about 5.78 g/L. Both cultivation methods were carried out under ambient pressure at a temperature of 29°C with a superficial gas velocity of 2.4 m/h (UG). Cells were grown on Beneck medium in a 1.0 L Bubble Column Photo bioreactor illuminated by aPhillips Halogen Lamp (20 W/12 V/50 Hz). The inlet gas had a carbon dioxide content of 10%. |
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