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Effects of Adding Alcohols, Electrolytes and Carboxyl Methyl Cellulose (CMC) on Design Parameters in Internal Loop Airlift Bubble Column

Ali, Abdul Rahman and Najmuldeen, Ghazi Faisal (2013) Effects of Adding Alcohols, Electrolytes and Carboxyl Methyl Cellulose (CMC) on Design Parameters in Internal Loop Airlift Bubble Column. International Journal of Engineering Sciences & Research Technology, 2 (12). pp. 3415-3426. ISSN 2277-9655

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Abstract

The effect of gas velocity, liquid-phase properties, solid-particle concentration and the static liquid height on gas hold-up (ɛg) and mass transfer coefficient (KLa) were studied in a three phase internal loop airlift bubble column (ILBC) (the ratio of the draft tube to column diameter equal to 0.5). Air was used as a gas phase. Water and seven aqueous solutions of 10% concentration methanol, ethanol, NaCL, acetic acid, 50% glycerol and 2%CMC were used as the liquid phase. Polyethylene-non-porous-solid particles with a concentration of (50,100) Kg/m3 were used as solid phase. Superficial gas velocity varied from 0.01 m/s to 0.1 m/s and air dispersed into the center of the draught tube by using a porous gas distributor. The results showed that (εg) and (KLa) increase with increasing gas velocity and decrease with increasing solid particle concentration, static liquid height, viscosity and surface tension of liquid-phase.

Item Type: Article
Uncontrolled Keywords: Alcohols; Electrolytes; Hydrodynamics; Mass transfer; Bubble columns
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 29 Apr 2015 08:26
Last Modified: 14 Sep 2017 05:14
URI: http://umpir.ump.edu.my/id/eprint/6168
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