Modeling of a fluidized-bed photocatalytic reactor for water pollution abatement

摘要: Abstract A system consisting of a fluidized bed quartz-support particles impregnated with titanium dioxide in UV-irradiated annular arrangement is presented as an efficient reactor configuration for the photocatalytic oxidation diluted trichloroethylene water. mathematical scheme developed to analyze bed, including detailed radiation field representation and intrinsic kinetic scheme. The model used predict operating conditions at which good mixing states fluid renewal rates are accomplished throughout compute contaminant decay. Systems analyzed include high-pressure Hg lamp, 0.3 m long setup, “actinic”, low-pressure lamp 1 reactor. For relatively high flow rates, per-pass conversions between 9 35% reached depending on considered, oxide concentration ranging 0.1 0.5 kg −3 . Results indicate strong dependence performance upon energy available each point annulus. This availability, turn, fraction both power UV-radiation penetration within bed. selected contaminant, shows that low-energy disadvantage can be compensated by fact more evenly distributed particle