CFD modeling of a UV-A LED baffled flat-plate photoreactor for environment applications: a mining wastewater case
作者： John Steven Devia-Orjuela , Luis Andrés Betancourt-Buitrago , Fiderman Machuca-Martinez
DOI: 10.1007/S11356-018-2431-2
关键词: Potassium persulfate 、 Wastewater 、 Ultraviolet light 、 Light-emitting diode 、 Chemical engineering 、 Sewage treatment 、 Potassium ferrioxalate 、 Photodegradation 、 Actinometer 、 Materials science
摘要: The use of ultraviolet light in photoreactors for wastewater treatment has become popular as an alternative known chemical oxidative substances. UV LED represents cheaper, robust, and versatile to traditional lamps. In this study, it was designed evaluated a photoreactor with approach fluid dynamics (CFD) experimental validation. evaluation consisted (1) CFD velocity profile analysis, (2) characterization the average distribution potassium ferrioxalate actinometry, (3) degradation typical recalcitrant metallic cyanocomplex Fe(CN)63−, (4) scavenger effect analysis photodegradation using persulfate. Actinometrical essay concluded that system able receive 1.93 μE/s. reactor operated under turbulent regime best result Fe(CN)63− obtained at 4 h operation, 5-W UV-A LEDs, pH ~ 7 10 mM de S2O82−. Baffled demonstrated be useful type illumination treatment.
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