The University of Massachusetts Amherst
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Investigation of an ozone membrane contactor system

TitleInvestigation of an ozone membrane contactor system
Publication TypeJournal Article
Year of Publication2005
AuthorsPines DS, Min K-N, Ergas SJ, Reckhow DA
JournalOzone: Science & Engineering: The Journal of the International Ozone Association
Start Page209
Date Published12/2010
KeywordsDisinfection, Drinking water treatment, Fine Bubble Diffusers, Membrane Reactors, Membranes, Oxidation, Ozone, Ozone Contactors, Wastewater Treatment

Ozone mass transfer rates were determined for nine expanded porous Teflon membranes that had different pore size, thickness, and pore volume, a nonporous Teflon membrane, and a PVDF membrane. The mass transfer coefficient was 7.6 ± 0.5 × 10−5 m/s at Re of 2000 for all membranes tested even though pore sizes ranged from 0.07 to 6 μm and thickness from 0.076 to 0.25 mm. Mass transfer increased with liquid side Reynolds number. Therefore, it is likely that ozone mass transfer is liquid phase controlling and not membrane limited. For a hypothetical case of 4000 m3/d and 2 mg/L ozone transferred, plate and frame membrane and hollow fiber contactors are approximately one and two orders of magnitude smaller, respectively, than fine-bubble diffusers.