The potential use of UV-TiO2 photocatalytic oxidation absorbent reactor in the removal of gaseous formaldehyde was studied. This study was conducted inside a bench-type circulation reactor chamber at ambient air conditions. PCO (Photocatalytic Oxidaion) degradation test for formaldehyde was done repeatedly and the average was reported. It was evident that photocatalytic oxidation was proven to be an effective method to control indoor air pollutants, like formaldehyde in indoor air. However, by-products are produced in the case of formaldehyde degradation also CO2, CO, H2O and formic acid are produced. These by-products can inhibit the active site of the photocatalyst. Thus, addition of adsorbent succeeding the PCO-TiO2, acts as a secondary treatment wherein produced by-products from the degradation and unreacted HCHO will adhere to the surface of the adsorbent. In this study, synthetic zeolite and activated carbon pellets were used to control of by-products of formaldehyde. PCOTiO2 degradation alone achieves 86% for a period of 60 minutes. Addition of adsorbent improves the removal efficiency achieving 90% and 96% using activated carbon pellet and zeolite, respectively.

1. 서 론
 2. 실 험
  2.1 광촉매 흡착 복합반응기
  2.2 챔버 실험
  2.3 실험방법
 3. 결과 및 고찰
  3.1 PCO-TiO2 반응기의 단독 처리효율 비교
  3.2 광촉매 반응기의 반응속도 비교
 4. 결 론
 감사의 글
 References

• Jaemi Hendrix(필리핀대학 딜리만)
• 최금찬(동아대학교 환경공학과) | Kum-Chan Choi Corresponding author