| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 |
18권 2호, p.2661 |
| 발표분야 |
환경 |
| 제목 |
Adsorption and photocatalytic degradation of humic acid in aqueous solution using mesoporous TiO2 supported on spherical activated carbon |
| 초록 |
Mesoporous TiO2 supported on spherical activated carbon (meso-TiO2/SAC) which possesses adsorption capacity with photocatalytic activity was prepared by ion-exchange method and heat-treatment process. Humic acid (HA) selected as a target substance can contaminant groundwater and surface water by complexation with a variety of heavy metal. To investigate the feasibility of applying meso-TiO2/SAC for removal of HA from aqueous solution, batch adsorption and photocatalysis experiments were carried out in a fluidized bed photoreactor. The results show that the rate of adsorption reaction of HA by meso-TiO2/SAC followed the pseudo second-order kinetics and the adsorption isotherm fitted well to the Freundlich and Langmuir isotherm models. In photocatalysis, it was discovered that about 80% TOC was removed under experimental conditions for catalyst dosage of 9 g/L and an initial HA concentration of 20 mg/L. Several reuse of meso-TiO2/SAC exhibited relatively high photocatalytic stability and TiO2 did not leach into the solution for long-term. |
| 저자 |
윤지원1, 백미화2, 홍지숙2, 이창용1, 서정권2
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| 소속 |
1공주대, 2한국화학(연) |
| 키워드 |
TiO2; activated carbon; photocatalytic degradation
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| E-Mail |
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| 원문파일 |
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