%0 Journal Article %T Experimental analysis of the chosen parameters effects on a gas hold up for mechanically agitated two- or three-phase systems %A Cudak, Magdalena %A Cieślik, Joanna %J Technical Transactions %V 2014 %N Chemistry Issue 2-Ch (24) 2014 %P 11-18 %K mixing, hold-up, gas-liquid-biophase systems %@ 0011-4561 %D 2014 %U https://ejournals.eu/en/journal/czasopismo-techniczne/article/experimental-analysis-of-the-chosen-parameters-effects-on-a-gas-hold-up-for-mechanically-agitated-two-or-three-phase-systems %X In the paper, the analysis of the chosen parameters effects (gas flow rate, the impeller speed, type of impeller and concentration of the aqueous solutions of sucrose) on the gas hold-up for gas-liquid and gas-liquid--biophase systems mechanically agitated are presented. Experimental studies were conducted in a vessel of the diameter of 0.288 m. The agitated vessel was equipped with Rushton or A 315 impeller. The results were described mathematically. The study shows that gas hold-up strongly depends on the impeller speed and the gas flow rate.