TiO₂를 이용한 Humic Acid의 광촉매분해에 대한 영향인자에 관한 연구

• 영문명: A Study on the Factors of the Photocatalytic Degradation of Humic Acid Using TiO₂
• 발행기관: 한국환경보건학회
• 저자명: 김현용(Hyun Yong Kim) 조일형(Il Hyoung Cho) 이홍근(Hong Keun Lee)
• 간행물 정보: 『1. 한국환경보건학회지』제25권 제2호, 26~30쪽, 전체 5쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 1999.06.30

영문 초록

The photocatalytic degradation of humic acid which is precursor of trihalomethanes (THMs) formed after chlorination was carried out in aqueous suspensions of TiO₂ as photocatalyst by illumination with UV light. Comparison of UV photolysis, TiO₂ adsorption and UV/TiO₂ phtocatalysis as well as the effect of reaction conditions such as UV intensity, TiO₂ dosage and H₂O₂ concentration on the degradation of humic acid was examined. The major results of this study were as follows: 1. With both UV illumination and TiO₂ present, humic acid was more effectively degraded than UV or TiO₂ alone and degradation efficiency of humic acid by Photocatalysis was 76.2%. 2. Photocatalytic Degradation of humic acid increased linearly with increasing UV light intensity. 3. Degradation efficiency of humic acid increased with increasing TiO₂ dosage. However, over 2 gll of TiO₂ dosage, the efficiency was limited because UV light is blocked by catalyst itself. 4. Addition of H₂O₂ as oxidant enhanced the efficiency of photocatalytic degradation on humic acid but the degradation efficiency reached a plateau over 500 mgll of H₂O₂

목차

I. 서론

II. 재료 및 방법

III. 결과 및 고찰

IV. 결론

키워드

Photocatalysis Humic acid TiO₂ UV H₂O₂