Comparison of Mercury Removal Efficiency from a Simulated Exhaust Gas by Several Types of TiO 2 under Various Light Sources. 연세대학교 화학공학과 이 태 규. 제 4 회 광촉매 연구회 2004 년 2 월 26 일. Introduction. Mercury. Toxic properties High volatility Tendency to bio-accumulate. Emission resources.
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Comparison of Mercury Removal Efficiency from a Simulated Exhaust Gas by Several Types of TiO2 under Various Light Sources
이 태 규
제4회 광촉매 연구회
2004년 2월 26일
high removal efficiency for low concentrations of toxic compounds
Hg removal under UV lightIntroduction
Hg removal by adsorbents
=> most widely used
slow adsorption rate
Hg removal using a TiO2
under thefluorescent light
TiO2(s) + light → TiO2·OH + Hg(g) → TiO2·HgO(complex)
The removal efficiency was close to 100% under most light sources tested.
More than 99% of initial Hg was removed under all the light sources tested except for the blue light still achieving a Hg removal efficiency close to 80%.
High efficiency was achieved even under the low concentration.
Easily maintainable and cost-effective fluorescent light can be used.
Future Works sources tested.
Hg removal by sunlight
• Furnace 온도가 증가함에 따라 크기가 커지지만
open structure를 가진 입자를 생성
•입자의 크기가 증가할수록 수은의 제거효율 증가
• NH3를 이용하여 TiOx-Ny를 제조, 가시광선에의
반응성 측정 및 촉매 특성 분석
Ti(OC3H7)4 + 18O2 → TiO2+12CO2 +14H2O
<Figure 1. Pure TTIP, HAB=3cm>
<Figure 2. Pure TTIP, HAB=5cm>
<Figure 3. Pure TTIP, HAB=7.5cm>
<Figure 4. Pure TTIP, HAB=10cm>
The End sources tested.