内部照射型反応槽中に分散した白金担持TiO_2光触媒によるTOCの分解速度

概要

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Effects of suspended photocatalyst concentration and reactor radius on the decomposition rate of total organic carbon (TOC) were studied to elucidate a design concept of the internal radiation-type cylindrical photoreactor. For this purpose, the transmittancy of UV light through Pt loaded TiO2 suspension and the rate of photocatalytic decomposition of TOC, caused by methanol as raw material, within cylindrical type photoreactors equipped with a high pressure Hg lamp were measured. The transmittancy of UV light through photocatalyst suspension was empirically correlated with light pass length and photocatalyst concentration. The decomposition rate of TOC was independent of TOC concentration. By using these obserbed results and assuming that the photocatalytic decomposition rate was proportional to photocatalyst concentration and square root of light intencity, an equation was presented to obtain the average reaction rate within the cylindrical type photoreactor. Experimental results of TOC decomposition in reactors with different diameters were well correlated with this equation.
社団法人　日本水環境学会の論文
1996-03-10