| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 가을 (10/30 ~ 11/01, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
23권 2호 |
| 발표분야 |
포스터_콜로이드·계면화학 |
| 제목 |
Removal of Cesium by Sulfur encapsulated zeolite micromotor from radioactive liquid waste |
| 초록 |
137Cs is the most dangerous contaminat due to long half-life(30.2 years), high-energy gamma ray. Moreover, due to physicochemical properties similar to potassium and high solubility, the Cs can be easily incorporated into terrestrial and aquatic organisms. In this study, sulfur encapsultaed zeolite(S-NaX) was prepared using vacuum sublimation in NaX to increase selectivity toward cesium. According to the hard soft acid base (HSAB) theory, the enhanced Cs+ ion-exchange selectivity can be explained by the fact that sulfur, a soft Lewis base, interacts more strongly wit Cs+, which is a softer Lewis acid than competition ions. S-NaX was coated with platinum (Pt) by sputtering. Pt coated S-NaX has self-propelled property in H2O2 solution. S-NaX@Pt were characterized by XRD and SEM. We also investigated in terms of the adsorption kinetics and effects of competing ions. Sulfur encapsultaed zeolite micromotor can be useful to remove cesium from radioacitve liquid waste. |
| 저자 |
이인애1, 박찬우2, 김형주2, 최민기3, 양희만2
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| 소속 |
1성균관대, 2한국원자력(연), 3한국과학기술원 |
| 키워드 |
Cesium; sulfur; zeolite; micromotor
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| E-Mail |
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