Abstract
To investigate the photocatalytic degradation of p-nitrophenol (PNP), a multi-stage axial radial impinging streams photoreactor, as a novel device, has been designed and constructed. Operating parameters including initial PNP concentration, pH, catalyst loading and slurry flow rate were determined as certain significant factors in degradation of PNP. The reaction intermediates have been identified applying high performance liquid chromatography (HPLC) and a possible reaction pathway was presented. A higher performance capability and enhanced efficiency in comparison with conventional batch photoreactor was observed in case of the multi-stage impinging streams photoreactor. Complete degradation of PNP was achieved within almost 80 min.
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