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Gas‐Sparged bioreactors for CO 2 fixation by Dunaliella tertiolecta
Author(s) -
Suzuki Takahiro,
Matsuo Takeshi,
Ohtaguchi Kazuhisa,
Koide Kozo
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280620407
Subject(s) - photobioreactor , bioreactor , carbon dioxide , bubble , gas lift , carbon fixation , light intensity , volumetric flow rate , chromatography , bubble column reactor , chemistry , materials science , analytical chemistry (journal) , mechanics , thermodynamics , gas bubble , biology , biomass (ecology) , ecology , physics , organic chemistry , optics
Two kinds of bioreactors, a bubble‐column and an air‐lift bioreactor, have been designed. The influence of operating conditions such as medium composition, light intensity, carbon dioxide concentration in the flushing gas, culture temperature, and gas flow rate, on photosynthesis of Dunaliella tertiolecta were studied using a chemometrics approach. The bubble‐column bioreactor system was shown to be advantageous over the air‐life because of a weaker intensity of hydrodynamic stress derived from gas bubble dispersion and culture broth mixing. Optimal conditions for carbon dioxide fixation or maximal growth rate were determined. The effect of hydrodynamic shear forces on the algal wall produced by gas bubbling was identified as one of the most significant factors for algal growth.