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RISS 인기검색어
- 검색키워드
- 저자 : 박경렬(Kyung Yeul Park) (검색결과 2 건)
- 무료
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순환식 반응기에서 UV-TiO₂를 이용한 반응성염료의 제거에 관한 연구
조일형(II Hyoung Cho),김현용(Hyun Yong Kim),이용규(Yong Gyoo Lee),박경렬(Kyung Yeul Park),이홍근(Hong Keun Lee) 한국환경보건학회 2000 한국환경보건학회지 Vol.26 No.1
Photocatalytic degradation of reactive dye, Red 120, has been carried out on TiO₂ particles as photocatalyst under UV irradiation. In this experiment, comparison on the removal of reactive dye by photolysis photocatalyst adsorption and photocatalysis as well as the effect of experimental parameters such as the number of column employed, circulation flow rate, intensity of the light, pH and TiO₂ dosage affecting the reaction efficiency of photocatalytic degradation of reactive dye in circular type reactor was examined. The results of this study were as follows. 1. With both UV light illumination and TiO₂ present, reactive dye was more effectively eliminated than with either UV or TiO₂ alone. It was found that application of TiO₂ photocatalysis to reactive dye was possible. 2. As the number of column employed increased, the removal efficiency of reactive dye was increased. 3. A s the circulation flow rate of solution increased, the removal efficiency of reactive dye was increased. However, over 1 !/min of the circulation flow rate, the efficiency was limited. 4 . Photocatalytic degradation of reactive dye increased linearly with increasing UV light intensity. However, over 15 mW/㎠ of UV light intensity, the efficiency reached a plateau. 5. The photocatalytic degradation rate was greater in acid media of pH 5.2 than in neutral and alkaline media. 5. Photocatalytic removal efficiency of reactive dye increased with increasing TiO₂ dosage. However, over 1.0 g/L of TiO₂ dosage, the efficiency reached a plateau.
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태양광 / TiO2 시스템을 이용한 수중의 중금속 - EDTA 제거에 관한 연구
조일형(Il Hyoung Cho),김현용(Hyun Yong Kim),성기석(Gi Seok Sung),박경렬(Kyung Yeul Park),이홍근(Hong Keun Lee) 한국물환경학회 2001 한국물환경학회지 Vol.17 No.1
The removal of heavy metal and EDTA was done by a solar photocatalytic oxidation and reduction. EDTA is industrial agent to form stable heavy metal-EDTA complex with toxic metals such as Cr(VI), Ni(II), Zn(II). Hg(II). Cu (II). Cd(II). In this experiment, comparison solar photolysis. TiO₂ adsorption, and solar/TiO₂ photocatalysis as well as the effect of reaction conditions such as solar light intensity, TiO₂ dosage and H₂O₂ concentration on the removal of heavy metal-EDTA were done in a tubular type reactor. The results of this study were as follows: 1) With both solar light and TiO₂ present, heavy metal-EDTA was more effectively removed than either solar light or TiO₂ alone. It was found that solar light application to the photocatalytic oxidation and reduction of heavy metal-EDTA was possible. 2) Photocatalytic removal efficiency of heavy metal-EDTA increased with solar light intensity. 3) Photocatalytic removal efficiency of heavy metal-EDTA increased with TiO₂ dosage. However, the efficiency approached to a saturation level over 1.5g/L of TiO₂ dosage. 4) Addition of H₂O₂ enhanced the efficiency of photocatalytic oxidation and reduction of the heavy metal-EDTA but the removal efficiency was similar or decreased over some level of H₂O₂ concentration.
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