Original scientific paper

Diffusion controlled corrosion in gas sparged systems

S.A. Nosier
M. I. El-Khiary
M.A. Nasr
A. A. Mubark

Abstract

The rate of diffusion - controlled corrosion of the walls of rectangular bubble column and a liquid has been studied with the copper dissolution technique. Variables studied were superficial air velocity, initial height of solution in the column, physical properties of the solution and the presence of suspended solids with different concentrations and different particle size. The rate of diffusion - controlled corrosion in solution free solids was given by the equation
J = 0.232 (Fr .Re)-0.22 (L/de)-0.169
while for the presence of suspended solids, the data were correlated by the equation
J = 0.171 (Fr .Re)-0.214(L/d p) 0.187
The presence of suspended solids increases the rate of diffusion - controlled corrosion by an amount ranging from 5 to 16 %.

Keywords

Bubble columns; mass transfer; diffusion - controlled corrosion; suspended solids

Hrčak ID:

3491

URI

https://hrcak.srce.hr/3491

Publication date:

30.1.2006.

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