Size methods sparging

The effectiveness of air sparging as a remediation tool depends on several variables, including soil type, the method of air injection, and the type and concentration of contaminants. The particle size and gradation of a particular soil determine the flow pattern in which the injected air will travel. 

Gas-liquid mass transfer in fermentors is discussed in detail in Section 12.4. In dealing with in gas-sparged stirred tanks, it is more rational to separate and a, because both are affected by different factors. It is possible to measure a by using either a light scattering technique [9] or a chemical method [4]. Ihe average bubble size can be estimated by Equation 7.26 from measured values of a and the gas holdup e. Correlations for have been obtained in this way [10, 11], but in order to use them it is necessary that a and d are known. 

---