Abstract
The effects of anionic, cationic, and non-ionic surfactants (SDS, SDBS, CTAB and Tween20) on oxygen mass transfer (OMT) in fine bubble aeration systems were investigated. The overall gas-liquid volumetric mass transfer coefficient (K L a), specific interfacial area (a), and liquid-side mass transfer coefficient (K L ) parameters were used to assess the influence of the surfactants. At the same concentration, the different surfactants were observed to influence the K L a value as follows: K L a (SDBS)>K L a (SDS)>K L a (tween20)>K L a (CTAB). For all used surfactants, the overall trends showed a significant decrease in the K L a value at low concentrations (0–5mg/L), while the K L a value recovered somewhat at high concentrations (10–20mg/L). The decrease to the KL value was found to be much larger than increase in the a value in the presence of surfactants. Furthermore, a simple model was established that provides an OMT prediction for different surfactants.
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Chen, X., Liu, Gh., Fan, H. et al. Effects of surfactant contamination on oxygen mass transfer in fine bubble aeration process. Korean J. Chem. Eng. 30, 1741–1746 (2013). https://doi.org/10.1007/s11814-013-0092-x
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DOI: https://doi.org/10.1007/s11814-013-0092-x