Nitoi, InesInesNitoi2017-03-282017-03-2820052016http://hdl.handle.net/123456789/504CEEX MENER, Contract : 642/2005"The general target of the project was to elaborate an advanced degradation technology for prior compounds specified in GD 351/2005 as chlorinated aromatic compounds (maximum accepted concentration level of g/l), by heterogeneous photocatalysis based on solar light as UV source and photocatalysts like TiO2 nanostructurated materials. Project results were concretized by the followings: -Documentary study regarding the AOPs applied processes in the field of advanced degradation of priority pollutants like aromatic chlorinated compounds and influence factors of photodegradation processes. -Setting the pollution level with aromatic chlorinated compounds and pollution context of some wastewater sources. -Study of sol-gel method applied in order to synthesize macromolecular lattice of metallic oxide and the influence factors of the process. -Setting the kinetic equations and photodegradation mechanisms of Chlorobenzene via direct photolysis, homogeneous and heterogeneous catalyzes and evaluation the influence of operating parameters on rate constants and process efficiency. -Assessment of pollutant structure influence and wastewater pollution context upon photodegradation efficiency. -Obtaining of photocatalyst as nanometric sol-gel powder based on S doped TiO2 having the followings characteristics: presence of TiO2 in a single crystalline phase - anatase, crystalline degree = 98%, crystallite dimension = 147 Å. -Setting treatment technology of wastewater with chlorobenzene content (mg/l content), and establishing of optimal operating parameter able to assure a high pollutant removal degree according with stipulated in force limit (g/l); the proposed technology tested on solar photocatalytic pilot installation, consists of: pre-treatment by neutralization-settling (optional applied for removal of suspended matters > 60 mg/l and/or iron > 0.5 mg/l), heterogeneous photocatalysis (pH = 7, S -TiO2 dose = hundreds mg/l, reaction time / mg CB removed tens min), photocatalyst separation and recirculation"en-USPhotodegradationTiO2Wastewater treatmentProject