Heterogeneous Fe-Mn/sepiolite catalysts were prepared by the coprecipitation method, followed by heat treatment. The catalysts were characterized by several techniques; analysis by X-ray fluorescence (XRF) and scanning electron microscopy (SEM) confirmed the existence of fine Fe and Mn particles in the catalysts. Compared to natural sepiolite, the specific surface area of the Fe-Mn/sepiolite ca...

Processes based on the simultaneous use of ozone and activated carbon have proven very effective for removing contaminants of high toxicity and low biodegradability. The present study is aimed to determine the kinetic constants involved in this purification process and their relationship with the surface chemistry of the activated carbon. For this purpose, the ozonation of 1,3,6-naphthalenetris...

In this study, the catalytic ozonation of pentachlorophenol (PCP) in presence aluminum oxide (Al2O3) and formation byproducts during ozonationhas been studied. Results showed that Al2O3 can substantially enhance PCP degradation efficiency compared with using only process. The influences severalenvironmental parameters including pH solution, initial concentration, dosage dissolved ozone concentr...

Catalytic ozonation is a non-selective mineralization technology of organic matter in water by using active free radicals generated ozone degradation. can be divided into homogeneous catalytic reactions metal ions as catalysts and heterogeneous solid catalysts. Homogeneous has many problems, such low rate, secondary pollution caused the introduction utilization efficiency oxidants, which limit ...