(22b) Enhanced VOCs Removal By Photocatalytic Oxidation Using Fiber-Illuminated Honeycomb Reactor At Ppb Level

VOCs removal at ppb level, which is hard to be degraded, is one of the most serious issues in clean rooms for the semiconductor industry. Hence, a new design of photo-reactor for higher removal efficiency is needed to develop. Fiber-illuminated honeycomb reactor (FIHR) have been designed, its removal efficiency of m-xylene is significantly enhanced (96.5 %) compare to only UV irradiated (22.0 %). The results also indicate that photocatalysts not only break the double bonds but also play a role on change the chemical properties of VOCs under UV illumination. The products of photoreaction are all water soluable. Using FIHR with Mn-TiO₂ photocatalyst not only increased the m-xylene removal efficiency, but also increased the CO₂ selectivity. The regeneration process also showed good results of reviving photocatalyst for reaction. Since its ability to manipulate at room temperature and high removal efficiency for VOCs at ppb level, it suggests that FIHR may be applied in the clean room air purification system in the future.