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The kinetics of photodegradation of methylene blue over UV light illuminated titania particles in aque-ous suspensions has been studied with different initial methylene blue concentrations and TiO_2 particle sizes.Thedegradation rate increases with the decrease of initial concentration and particle size.A quasi-experienced modelfor photodegradation rate is derived based mainly on the coinstantaneous effects of different initial concentrationsand partic1e sizes.The mathematica1 re1ationships of model parameters with initia1 concentration and particle sizeare given.The model results of the photodegradation rate of methylene blue are coincident with the experimentaldata.
The kinetics of photodegradation of methylene blue over UV light with titania particles in aque-ous suspensions has been studied with different initial methylene blue concentrations and TiO 2 particle sizes. The degradation rate increases with the decrease of initial concentration and particle size. A quasi-experienced modelfor photodegradation rate is derived based mainly on the coinstantaneous effects of different initial concentrations and particulars size. mathematica1 re1ationships of model parameters with initia1 concentration and particle sizeare given. The model results of the photodegradation rate of methylene blue are coincident with the experimentaldata.