Photodegradation Of Phenanthrene Catalyzed By Nano-TiO₂

属性不符 phenanthrene, the degradation rate decrease and the degradation rate decrease greatly when the concentration of phenanthrene reaches a certain value. High and low pH value can be conductive to the degradation rate. The addition of Fe3+can increase the degradation rate, but when the Fe3+ concentration is above 0.6mmol/L, the degradation rate began to fall and it can reduce the degradation of phenanthrene when the Fe3+ concentration is more than 1.2mmol/L.K2S2O8 can accelerate the degradation of phenanthrene. With the increase of NaHCO3, the degradation rate decrease.In the treatment of water with phenanthrene by photocatalytic oxidation used nano-TiO2 ceramic ball as catalyst, we found that the temperature, value of pH, Ca2+ have no significant effect on the degradation of phenanthrene. With the increase of phenanthrene, the degradation rate decrease. Fe3+ and K2S2O8 can accelerate the degradation of phenanthrene. With the increase of NaHCO3, the degradation rate decrease The photocatalytic degradation rate gradually decreased from 96.09% to 73.97% after eight times repeated use. In the process, some intermediate products were detected by GC-MS, the pathway of phenanthrene degradation was described.