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Title: Effects of impurities on oxygen transfer rate in the electroflotation process
Authors: Kotti, M
Dammak, N
Ksentini, I
Mansour, L Ben
Keywords: Electroflotation;Transfer of oxygen;Soyabean oi;Surfactant
Issue Date: Nov-2009
Publisher: CSIR
Abstract: In this work, three different types of impurities: soybean oil, surfactant and diatomaceous earth were doped to simulate the impurities in wastewaters issued from edible oil refinery plant. The effects of the impurities on the oxygen transfer rate were investigated in an electroflotation cell. The volumetric mass transfer coefficient was studied for a batch mode involving different values of the current density for different impurities concentrations. The capacity of oxygenation and the corrective alpha factor were also studied. Models which relate the volumetric mass transfer coefficient to the current density and the concentration of the impurities were established. The results showed that the presence of impurities significantly reduce the volumetric mass transfer coefficient KLa.
Page(s): 513-518
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.16(6) [November 2009]

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