Taking a coconut shell powder activated carbon (PAC) as the carrier and butyl acetate titanate with ethanol as raw materials

TiO2/AC(activated carbon) photocatalyst was prepared through sol-gel and impregnation method

and batch experiments were carried out to investigate its performances of removing Carbamazepine from artificial water. The results indicate that TiO2/AC has a better removal of carbamazepine than powder TiO2 and PAC. In the same condition

the removal of carbamazepine in TiO2/AC system is 1.7 times than that in TiO2. When the initial concentration of Carbamazepine is 10 mg/L

and the dosage of TiO2/AC is 500 mg/L

in which the load capacity of TiO2 is 11.2%

the removal rate reaches at 91.5% while the PH is 1.0. The reaction of photocatalytic degradation process can be accorded with two-step dynamics kinetics with different concentrations. The constant of secondary reaction is inversely proportional to concentration. Using Langmuir-Hinshelwood (L-H) model

it concludes that the apparent adsorption equilibrium constant Ka is 9.215×10 3 L/mol

and the surface reaction rate constant Kr is 3.678×10 -6 mol/(L·min). Thus

microwave irradiation is the best way for catalyst regeneration.