Effects of SO2 and NO on growth of Chlorella sp. KR-1

Jin Suk Lee, Deog Keun Kim, Jun Pyo Lee, Soon Chul Park, Jong Ho Koh, Hye Sung Cho, Seung Wook Kim

Research output: Contribution to journalArticlepeer-review

135 Citations (Scopus)


Effects of the toxic compounds in flue gas, SOx and NOx, on growth of Chlorella sp. KR-1 have been determined. Although growth of KR-1 was suppressed by the toxic compounds, KR-1 exhibited excellent tolerances to SOx compared to other algal strains. When Chlorella KR-1 was cultured with the model gas containing 60 ppm SO2, the linear growth rate was 1.24 g/l day which is about 25% lower than that of the control culture aerated with the gas mixture containing no toxic compounds, SO2 and NO. KR-1 could grow even with the model gas containing 100 ppm SO2 and the linear growth rate of KR-1 in the culture was 0.78 g/l day. The period for lag phase was increased with increasing of SO2 concentration that also resulted in the decrease of the linear growth rate and the maximum cell concentration. Direct CO2 fixation by Chlorella KR-1 has been successfully done using actual flue gases from a liquified natural gas (LNG)- or diesel-fueled boiler. These results indicated that Chlorella KR-1 may be applied for direct CO2 fixation from actual flue gas.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalBioresource technology
Issue number1
Publication statusPublished - 2002

Bibliographical note

Funding Information:
This research was performed for the Greenhouse Gas Research Center, one of the Critical Technology-21 Programs, funded by the Ministry of Science and Technology of Korea.


  • Acidification
  • Chlorella KR-1
  • Direct CO fixation
  • Flue gas
  • SO and NO
  • Tolerance to the toxic compounds

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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