[Retracted] Oxygen Mass Transfer in an Aerated Stirred Tank with Double Impellers: A Generalized Correlation Including Spacing Impact

Table 1

The most commonly stated oxygen mass transfer coefficient correlations for stirred and aerated vessels with multiple impellers (liquid volume of 0.036–0.46 m³).

System; description	Correlation	Reference
= 0.8 m; / = 0.24; = 1.67–5.0 rps; / = 1.37–1.45; / = 0.5–1.0; IBRC-PBPU; Air-water		This work
= 0.6 m; / = 0.33; / = 1–3; = 2.5–10 rps; Various multiple impeller; Air -water		Moucha et al. 2009 [19]
= 0.3 m; / = 0.4; / = 1.8; = 8–13 rps; PDT + 2CBYN; Air-water		Zhang et al. 2015 [20]
= 0.2 m; / = 0.5; / = 0.8–1.8; = 1–10 rps; LSB multiple impeller; Pure O2-water		Luo et al. 2015 [21]