Test-bed 콘크리트 구조물에 적용된 동적 가압 침투식 TiO2 고정화 기술의 NOx 제거효율 평가

서지정보

ㆍ발행기관 : 한국도로학회 ㆍ수록지정보 : 한국도로학회논문집 / 25권 / 2호
ㆍ저자명 : 김광현, 안희락, 이승우, 김영규

목차

ABSTRACT
1. 서론
2. TiO2 콘크리트의 특성
2.1. TiO2의 질소산화물(NOx) 제거원리 및 특성
2.2. 국내·외 TiO2 적용 콘크리트 사례 및 특징
3. 질소산화물(NOx) 제거효율 평가 실험전략
3.1. Test bed 수직 콘크리트 구조물에 대한 TiO2고정화 방안 선정
3.2. Test bed 구축을 통한 질소산화물(NOx) 및일산화질소(NO) 제거효율 평가 실험전략
4. Test bed 수직 콘크리트 구조물의 동적 가압 침투식 TiO2 고정화 기술 적용에 따른 질소산화물(NOx) 및 일산화질소(NO) 제거효율 검토
5. 결론
REFERENCES

영어 초록

PURPOSES : Advancements in science and technology caused by industrialization have led to an increase in particulate matter emissions and, consequently, severity of air pollution. Nitrogen oxide (NOx), which accounts for 58% of road transport pollutants, adversely affects both human health and the environment. A test-bed was constructed to determine NOx removal efficiency at the roadside. TiO2, a material used to reduce particulate matter, was used to remove NOx. It was applied to a vertical concrete structure using the dynamic pressurized penetration TiO2 fixation method, which can be easily applied to vertical concrete structures. This study was conducted to evaluate the NOx removal efficiency of the dynamic pressurized-penetration TiO2 fixation method in a test-bed under real roadside conditions.
METHODS : A test-bed was constructed in order to determine the NOx removal efficiency using the dynamic pressurized penetration TiO2 fixation method on the roadside. The dynamic pressurized-penetration TiO2 fixation method was applied by installing a vertical concrete structure. NOx was injected into the test-bed using an exhaust gas generator. By installing a shading screen, the photocatalytic reaction of TiO2 was suppressed to a maximum concentration of 1000 ppb along the roadside. The removal efficiency was evaluated by measuring NOx concentrations. In addition, illuminance was measured using an illuminance meter.
RESULTS : From the results of the analysis of the NOx removal efficiency in the test-bed which the dynamic pressurized type TiO2 fixation method was applied to, an average removal efficiency ranging from 18% to 40% was achieved, depending on the illuminance. Similarly, according to the results of the evaluation of the NO removal efficiency, an average of removal efficiency ranging from 20% to 62% was achieved. Thus, the NOx removal efficiency increased when the illuminance was high.
CONCLUSIONS : From the results of the experiment conducted, the efficiency of NOx removal per unit volume was obtained according to the illuminance of TiO2 concrete along an actual road. Field applicability of the dynamic pressurized-penetration-type TiO2 fixation method to vertical concrete structures along roads was confirmed.

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