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Journal of the Korean Society of Hazard Mitigation 2011;11(6):325-330.
Published online December 31, 2011.
$TiO_2$/HAP 여재를 통한 Sulfamethoxazole의 동역학적 흡착과 광촉매반응에 대한 연구
천석영, 장순웅
Kinetic Study of Adsorption and Photocatalysis on Sulfamethoxazole Degradation by $TiO_2$/HAP Media
Suk-Young Chun, Soon-Woong Chang
Abstract
In this study, it was found that adsorption and photocatalysis methodology of antibiotics such as Sulfamethoxazole with various catalyst(Titanium dioxide; $TiO_2$, Hydroxyapatite; HAP). And compared the result of determined kinetics such as pseudo first order, second order and intra particle diffusion model. $TiO_2$/HAP adsorbent were found to follow the pseudo second order reaction. And in the result of applied intrapaticle diffusion model, the constant of reaction rate were $TiO_2=0.0641min^{-1}$, $HAP=0.2866min^{-1}$ and $TiO_2/HAP=0.3708min^{-1}$, respectively. According the result of intraparticle diffusion model and photocatalysis experiments showed the $TiO_2$/HAP was more effective system.
Key Words: Sulfamethoxazole; adsorption; Photocatalysis; intrapaticle diffusion model
요지
본 연구에서는 다양한 촉매(Titanium dioxide; $TiO_2$, Hydroxyapatite; HAP)를 통해 항생제의 하나인 Sulfamethoxazole의 흡착과 광촉매 산화반응에 대해 연구하였다. 그리고 도출된 유사 1차, 2차 반응과 입자내 확산 모델(intraparticle diffusion model)의 동역학적 결과를 비교하였다. $TiO_2$/HAP는 유사 2차 반응을 따르는 것으로 나타났으며 입자내 확산 모델의 적용 결과, 반응속도 상수는 각각 $TiO_2=0.0641min^{-1}$, $HAP=0.2866min^{-1}$$TiO_2/HAP=0.3708min^{-1}$으로 나타났다. 입자내 확산 모델과 광촉매 산화 반응의 결과에 따르면 $TiO_2$/HAP 공정이 효율적인 것으로 관찰되었다.
핵심용어: 항생제; 흡착; 광촉매반응; 입자내 확산 모델
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