Bubble size distribution: comparison between six-bladed curve blade impeller and Rushton Turbine

Abdul Raman, Abdul Aziz and Nik Sulaiman, Nik Meriam and Ibrahim, Shaliza and Sethu, Vasanthi (2007) Bubble size distribution: comparison between six-bladed curve blade impeller and Rushton Turbine. Malaysian Journal of Chemical Engineering, 1. pp. 163-170. ISSN 1985-3564

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Abstract

In this work, bubble size distribution generated by six-bladed curve blade impeller (6CB) was compared with Rushton Turbine (6RT) in a 40 em diameter cylindrical tank for gas-liquid and gas-liquid-solid systems. Bubbles were drawn out from the tank using a suction pump and captured by digital camerawhen the bubbles passed through a specially built cylindrical perspex tube. The Sauter mean diameter, d32 and distribution curves were compared at 5 L/min aeration rate and 60, 80 and 100 rpm for two (0% inert solid) and three phase systems (addition of 2% wt inert solid). The investigation showed that at 60 rpm, d32 for 6CB was lower than 6RT by about 10% at locations very close to the impeller region. However. at higher agitation speed (80 and 100 rpm). 6RT recorded lower d32 values than 6CB. Addition of solid 2% wI inert solid was found to decrease the d32 values (compared to gas-liquid system) but became almost similar and a bi-modal distribution was also observed for both the impellers.

Item Type: Article
Additional Information: Phone: 603-79675300 Fax: 603-79675319
Uncontrolled Keywords: Bubble size distribution; Sauter mean diameter; Rushton Turbine; Curve blade impeller
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Norhamizah Tamizi
Date Deposited: 13 Mar 2014 09:49
Last Modified: 07 Aug 2020 01:20
URI: http://eprints.um.edu.my/id/eprint/9540

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