Exchange rates of O2 and CO2 between an algal culture and atmosphere

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10 Scopus citations


The mechanism of CO2 and O2 exchange between atmosphere and an algal mini-pond was examined by monitoring, with a novel microcomputer based system, pH, dissolved oxygen, turbidity, light intensity and temperature. The microcomputer based system was also used to monitor on-line the net oxygen production rate (OPR) and the gas exchange processes. The measured data support the assumption that the gas exchange is driven by the gradient of the partial pressure of the gases across the imaginary boundary layer (z layer). An analytical model based on this assumption was simulated by a computer and compared with the experimental data. The photosynthetic activity of a blue-green alga (Spirulina platensis) mini-pond as it is influenced by the CO2 concentration in the growth medium is discussed. The overall photosynthetic process was studied by comparing the experimental data with a mathematical model, evaluating the effectiveness of alternative carbon sources.

Original languageEnglish
Pages (from-to)25-34
Number of pages10
JournalWater Research
Issue number1
StatePublished - 1 Jan 1987


  • Spirulina platensis
  • algal pond
  • carbon dioxide
  • gas exchange
  • oxygen
  • oxygen production rate

ASJC Scopus subject areas

  • Water Science and Technology
  • Ecological Modeling
  • Pollution
  • Waste Management and Disposal
  • Environmental Engineering
  • Civil and Structural Engineering


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