| abstract |
A process for photocatalytic removal of organic substances from waste waters, wherein by way of photocatalyst use is made of granulates based on pyrogenically prepared titanium dioxide having the following physicochemical characteristic data: n Mean grain diameter: 10 to 150 μm BET surface: 25 to 100 m 2 /g pH value: 3 to 6 Compacted bulk density: 100 to 1,200 g/l. |