The kinetics of growth and the CO2 concentrating mechanism of the filamentous cyanobacterium Anabaena cylindrica in a bubble column

Anondho Wijanarko, Kazuhiro Asami, Kazuhisa Ohtaguchi

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5 Citations (Scopus)

Abstract

The growth and CO2 concentrating mechanism of a filamentous cyanobacterium Anabaena cylindrica IAM-M1 in a bubble column have been studied by following the time courses of biomass concentration, pH, CO 2 accumulation rate, and transmittance of light. The biomass production increased with the increasing superficial gas velocity from 9.0 m·h-1 to 12 m·h-1 or with increasing mole fraction of CO2 at the inlet from 0.03 to 0.06, while it decreased with the increasing superficial gas velocity from 12 m·h-1 to 18.0 m·h-1 or with the increasing fraction of CO2 from 0.06 to 0.12. As biomass concentration increased the photosynthetic photon flux density of the transmitted light decreased. The CO2 accumulation rate, which almost equaled in magnitude the CO2 mass transfer rate (CTR), went up steeply in the early phase of cell growth. The photosynthetic CO2 uptake rate (CUR) reached the maximum at the late logarithmic growth phase. The maximum value of the ratio CTR /CUR was 804.

Original languageEnglish
Pages (from-to)1019-1025
Number of pages7
JournalJournal of Chemical Engineering of Japan
Volume37
Issue number8 SPEC. ISS.
DOIs
Publication statusPublished - 1 Aug 2004

Keywords

  • Anabaena cylindrica
  • Biochemical engineering
  • Bubble column bioreactor
  • CO fixation
  • CO concentrating mechanism
  • Cyanobacteria

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