Fotokatalytisk oxidation för en reducering av lättflyktiga kolväten

Sammanfattning: In this study photocatalytic oxidation was investigated as a potential treatment method of VOC emissions from industrial plants. This was done by designing an experimental setup and a photocatalytic reactor for screening of photocatalysts (TiO2). The performance of commercial TiO2 and synthesized TiO2 (pure and Ni-doped) for degrading acetaldehyde when exposed to UV-C light was evaluated at fix reaction conditions. Also, procedure of coating TiO2 on aluminum and stainless steel as well as their stability performance was investigated in the study. For comparison of photocatalysts aluminum was chosen as support material since it showed highest stability at reaction conditions.  The results show that photocatalysts with a high anatase content and high specific surface area present enhanced photocatalytic performance. Commercial TiO2 show significantly higher photocatalytic performance than synthesized TiO2. This may be influenced by higher coating stability presented for commercial TiO2. For synthesized TiO2 non-doped samples present significantly higher performance than Ni-doped TiO2. However, because of coating instabilities it is difficult to determine if this was observed difference in performance was only caused by photocatalytic performance.