活性炭吸附下TiO_2光催化降解苯酚的研究

Photocatalytic degradation of phenol over titanium dioxide adsorbed on active carbon

探索了不同C/TiO2质量比例下,影响苯酚去除率的一些因素.通过实验得到:在单一影响因素下C/TiO2质量的比例为1∶1时效果最佳,降解速度最快;苯酚的起始浓度升高,其降解速度增大,但去除率降低;在pH5～10范围内,pH7时1h去除率最大;TiO2的最佳用量为10g/L.在此条件下,50mg/L苯酚溶液光解2h,去除率达99%以上.

The photocatalytic oxidation of aqueous phenol solutions in the presence of UV illuminated TiO 2 has been studied experimentally.The TiO 2 was used as attached to active carbon.In two hours the UV light degraded 99% of a 50mg/L phenol solution,of volume 1L in an open reactor under the following optimum conditions:air flow rate of 0 4L/min,1 0g/L TiO 2,1∶1 C/TiO 2 ratio and pH7.