Abstract
Ozonation in rotating packed bed (RPB) is a promising method to treat organic pollutants in wastewater. Mass transfer efficiency of ozone in RPB is of importance to the application of this method. In this work, an overall volumetric mass-transfer coefficient (KGa) model of ozone absorption into organic solution accompanied by an irreversible pseudo-first-order reaction in an RPB was established. The mass transfer processes in both the packing and cavity zones in the RPB were considered for modeling KGa. The predicted and experimental KGa agreed well with the deviations within 10% and 15% for a hydroquinone solution and phenol solution, respectively, suggesting that this model has good predictability for the mass transfer process of ozone absorption into organic solutions with different reaction rates in RPB. It is also noted that the ozone absorption percentage in phenol solution was 40%–60%, but a much higher ozone absorption percentage in hydroquinone solution of 80%–95% was achieved due to a higher KGa...
Published Version
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