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In pseudoplastic aqueous solutions of polysaccharides (xanthan, hydroxypropyl guar), hydrodynamics and oxygen mass transfer were studied in bubble columns of 0.19 m, 0.29 m and 0.60 m diameter (0.08 to 1.6 m 3 liquid volume). Churn-turbulent flow prevailed; a slight diameter effect on the gas hold-up was observed only at high viscosity in the smaller columns. The volumetric mass transfer coefficients...
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