J.of Soc of Agri Struc, Japan.
Vol.27,No.2 September 1996,85-93
Original:
Language: Japanese

    CO₂ fixation by a blue green algae, Spirulina platensis, was evaluated using volumetric mass transfer coefficient(K_La). The specific surface area of the cells was measured with an image analyzed. CO₂ mass transfer coefficient k^CO2_L was evaluated with the specific surface area of the cell(a). The surface area of each cell(a_d) was about 5.0(m²/g-d.m.), and CO₂ mass transfer coefficient k^CO2_L ranged between 0.8 X 10^-4 and 1.0 X 10^-4(m/day). The value of k^CO2_L during the linear growth phase was found to decrease to one fifth of the maximum. The distribution of the cell's surface area in the late growth phase(14-th day) also correlated well with the Weibull distribution. It was found that the mixing caused cell destruction.

Keywords: Spirulina platensis, CO₂ fixation, image analysis, batch cultivation

HomePage