Mass Transfer of Ozone Using a Microporous Diffuser Reactor System

An ozone reactor was constructed using a tubular gas diffuser made of microporous stainless steel to significantly reduce gas bubble size and increase overall mass transfer area. Overall mass transfer coefficient, KLa [s −1], was correlated with gas (G) and liquid (L) flow rates using KLa = ALαGβ , with A = 3.96 × 10 8 [s−1], α = 1.53, and β = 0.40, with L and G in [m 3s−1]. The reactor is essentially plug flow at high G or L. This system achieves one of the highest ozone mass transfer rates observed in the literature.