Degradation of organic pollutants in wastewater was investigated by photocatalysis\nmethod using anatase modification of titanium-dioxide (TiO2) catalyst\nwith different structures. Laboratory experiments were carried out with industrial\nwastewaters consisting of different contents of organic pollutants.\nTwo types of TiO2 catalyst: TiO2 having a size near to nanoparticles (about 3 -\n4 micron in size) and the nanostructured 15 nm sized TiO2 were used to find\noptimum conditions of photocatalytic degradation and removal of organic\ncompounds from wastewater. This paper discusses the effect of various parameters\non the degradation rate including the catalyst concentration, process\nduration as well as the catalytic effectiveness of the TiO2 particles� size. In addition,\nthe effect of UV and visible light sources on the degradation process\nwas studied. The process performed with nanostructured TiO2 catalyst under\nvisible light was very successfully allowing best degradation of organic compounds.
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