Degradation kinetics of phenol by a titanium dioxide photocatalyst coupled with a magnetic field

Photocatalytic degradation of phenol by a TiO2 catalyst coupled with a magnetic field was investigated from the aspect of reaction kinetics. The effect of the degradation conditions on the phenol degradation rate constants was discussed and optimized. The kinetic investigation showed that the pseudo-first order reaction model could illustrate well the photocatalytic degradation of phenol. With a magnetic field strength of 0.082 T, initial phenol concentration of 60 mg L−1, TiO2 catalyst dosage of 1.0 g L−1, air inflow rate of 1,000 mL min−1, UV lamp power of 100 W and initial pH of 6.6, the highest degradation rate constant of 0.00672 min−1 was achieved.