| Abstract [eng] |
Application of hybrid advanced oxidation systems for decomposition of the priority pollutants in environmental water and air is a rapidly improving tendency, which attracts intense interest in environmental engineering science field. The hypothesis of this environmental engineering master thesis: modified, catalyst coated activated carbon sorbent combined with other advanced oxidation processes can effectively decompose organic pollutants in water and air. To test this hypothesis, titanium dioxide catalyst coated activated carbon sorbent was prepared by sol gel method, its features were investigated and the evaluation of efficiency of decomposition of chosen organic pollutants in different advanced oxidation systems was performed. The only crystallic phase of titanium dioxide that was discovered in prepared coatings by X-ray diffraction analysis was anatase. After investigation of microscopic-morphologic features of catalyst coated activated carbon sorbents, which were prepared by the chosen sol gel method modification, it was found out that the coatings of these sorbents were distinguished by small agglomeration of catalyst particles. Application of the catalyst coated activated carbon sorbent, combined with the chosen advanced oxidation systems, to the synthetic textile dyes wastewater treatment showed that the catalyst coated sorbent works 12 % more efficiently than the plain sorbent in the UV/AA system, and 14 % more efficiently in the O3/AA system. After application of the UV/O3/AA system inactivation of the catalyst was noticed. The analysis of the efficiency of methylbenzene removal from air flow by catalyst coated activated carbon filter combined with ozonation, showed that the coated air filter works 10 % more efficiently than the plain one. |
