Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/1117
Title: Experimental study of hydrodynamic and bubble size distributions in electroflotation process
Authors: Mansour, L Ben
Chalbi, S
Kesentini, I
Keywords: Electroflotation
Hydrodynamics
Bubble size
Current density
Issue Date: May-2007
Publisher: CSIR
Series/Report no.: C25D, G01N30/00
Abstract: The objective of this contribution is the experimental study of the hydrodynamic and the bubble size distributions in the electroflotation process. The influence of some operating conditions such as current density and physical properties of liquid phase on some hydrodynamic parameters and the bubble size distribution are discussed. The effects of the current density, viscosity and surface tension of the liquid phase on the gas hold up, the bubble rise velocity, the average bubble diameter and the bubble size distributions are experimentally investigated. Bubbles tend to become smaller with decreasing surface tension, current density and viscosity. Gas hold up tends to increase with increasing current density and decreasing viscosity. The bubble rise velocity exhibits the same behaviour as the gas hold up and so it increases with the increasing current density and decreases with increasing viscosity. Bubble size distribution depends only on the current density, and the wide range of bubble sizes increases with increasing current density. For such systems most of the hydrodynamic parameters depend on the current density and physical properties of the liquid phase. Experimental results are also fitted with empirical equations which relate gas hold up, bubble rise velocity, and average bubble diameter with the current density and viscosity of the medium
Description: 253-257
URI: http://hdl.handle.net/123456789/1117
ISSN: 0971–457X
Appears in Collections:IJCT Vol.14(3) [May 2007]

Files in This Item:
File Description SizeFormat 
IJCT 14(3) (2007) 253-257.pdf238.96 kBAdobe PDFView/Open


Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.