Gas‐liquid transfer of atmospheric CO2 in microalgal cultures

Transfer of CO 2 in an aerated microalgal culture system has been studied. The CO 2 absorption rate was not visibly affected by the kinetics of the reactions occurring in the culture medium. Biomass concentration in the bioreactor, within the interval studied, did not significantly affect the overall volumetric coefficient of CO 2 transfer (K 1a (CO 2 )). An expression has been proposed for the estimation of K 1a (CO 2 ) in the culture as a function of the effective power input to dispersion. Several empirical equations, found in the literature for estimation of the mass transfer parameters, were studied and those which best predicted experimental results are presented.

[1]  L. Erickson,et al.  The estimation of growth yield and maintenance parameters for photoautotrophic growth , 1984, Biotechnology and bioengineering.

[2]  K. Terry,et al.  Photosynthesis in modulated light: Quantitative dependence of photosynthetic enhancement on flashing rate , 1986, Biotechnology and bioengineering.

[3]  G. A. Hughmark,et al.  Holdup and Mass Transfer in Bubble Columns , 1967 .

[4]  P. Talbot,et al.  Absorption of CO2 in algal mass culture systems: A different characterization approach , 1991, Biotechnology and bioengineering.

[5]  K. Lívanský.  Losses of CO2 in outdoor mass algal cultures : determination of the mass transfer coefficient KL by means of measured pH course in NaHCO3 solution , 1990 .

[6]  F. Yoshida,et al.  Oxygen Absorption Rates in Stirred Gas-Liquid Contactors Condensed—complete copy for sale , 1960 .

[7]  M. Moo-young,et al.  The continuous phase heat and mass transfer properties of dispersions , 1961 .

[8]  Donald Nelson Miller,et al.  Scale‐up of agitated vessels gas‐liquid mass transfer , 1974 .

[9]  E. Grima,et al.  Fatty acid variation among different isolates of a single strain of Isochrysis galbana , 1992 .

[10]  J. Raven.  Physiology of inorganic C acquisition and implications for resource use efficiency by marine phytoplankton: relation to increased CO2 and temperature , 1991 .

[11]  S. Pirt,et al.  CO2 absorption rate in an algal culture: Effect of pH , 2008 .

[12]  E. Grima,et al.  Isolation of clones of Isochrysis galbana rich in eicosapentaenoic acid , 1992 .

[13]  Aniruddha B. Pandit,et al.  Mechanically agitated gas-liquid reactors , 1982 .

[14]  J M Smith,et al.  Development of a strategy to control the dissolved concentrations of oxygen and carbon dioxide at constant shear in a plant cell bioreactor , 1990, Biotechnology and bioengineering.

[15]  E. Molina,et al.  Growth and biochemical composition with emphasis on the fatty acids of Tetraselmis sp. , 1991, Applied Microbiology and Biotechnology.

[16]  L. Pearson,et al.  The kinetics of combination of carbon dioxide with hydroxide ions , 1956 .

[17]  J. Merchuk,et al.  On the first-order approximation to the response of dissolved oxygen electrodes for dynamic KLa estimation. , 1990, Biotechnology and bioengineering.

[18]  J. Shanahan,et al.  Carbon Dioxide Transfer in Bioreactors , 1986 .

[19]  K. Yamagiwa,et al.  Gas holdup, power consumption, and oxygen absorption coefficient in a stirred‐tank fermentor under foam control , 1991, Biotechnology and bioengineering.

[20]  F. Yoshida,et al.  Gas Absorption in Agitated Gas-Liquid Contactors , 1963 .

[21]  C. Wilke,et al.  Simultaneous measurement of interfacial area and mass transfer coefficients for a well—mixed gas dispersion in aqueous electrolyte solutions , 1974 .

[22]  P. Tapie,et al.  Microalgae production: Technical and economic evaluations , 1988, Biotechnology and bioengineering.

[23]  Daniel Chaumont,et al.  Cell fragility — The key problem of microalgae mass production in closed photobioreactors , 1991 .