Enhancement of carbon dioxide fixation by alteration of illumination during Chlorella vulgaris-Buitenzorg's growth

Anondho Wijanarko, Dianursanti, Misri, S. M K Andika, Paramita Widiastuti, Heri Hermansyah, Arief Budi Witarto, Kazuhiro Asami, Roekmijati Widaningroem Soemantojo, Kazuhisa Ohtaguchi, Song Seung Koo

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Alteration of illumination with optimum carbon dioxide fixation-based curve in this research successfully enhanced the CO2-fixation (qCO2) capability of Chlorella 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 12.8 h-1. Meanwhile, alteration of light intensity with a growth-based curve only 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 a Phillips Halogen Lamp (20 W/12 V/50 Hz). The inlet gas had a carbon dioxide content of 10%.

Original languageEnglish
Pages (from-to)484-488
Number of pages5
JournalBiotechnology and Bioprocess Engineering
Volume11
Issue number6
DOIs
Publication statusPublished - 1 Nov 2006

Keywords

  • Chlorella vulgaris Buitenzorg
  • CO fixation
  • Illumination
  • q

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