A5049221449- Radioactive contamination and transfer
- Radioactive element chemistry and processing
- Nuclear and radioactivity studies
- Chemical Synthesis and Characterization
- Graphite, nuclear technology, radiation studies
- Groundwater flow and contamination studies
- Radioactivity and Radon Measurements
- Coal and Its By-products
- Clay minerals and soil interactions
- CO2 Sequestration and Geologic Interactions
- Landslides and related hazards
- Environmental Justice and Health Disparities
- Optical Systems and Laser Technology
- Soil and Unsaturated Flow
- Catalysis and Oxidation Reactions
- Geochemistry and Geologic Mapping
- Nuclear materials and radiation effects
- Rock Mechanics and Modeling
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Hydraulic Fracturing and Reservoir Analysis
- Heavy metals in environment
- Arsenic contamination and mitigation
- Methane Hydrates and Related Phenomena
Korea Advanced Institute of Science and Technology
2025
Korea Atomic Energy Research Institute
2022-2023
Yonsei University Health System
2018-2022
Yonsei University
2018-2022
Korea Basic Science Institute
2018-2021
Forming defect sites on catalyst supports and immobilizing precious metal atoms at these offers an efficient approach for preparing single‐atom catalysts. In this study, we employed Fe‐Ce oxide solid solution (FC), which has surface oxygen that reduces more readily than of ceria, to anchor Rh single (Rh1). When utilized in the selective catalytic reduction NO with CO (CO‐SCR), Rh1/FC reduced 500 °C— characterized by less oxidic state induced oxygen‐deficient coordination—exhibited superior...
Radiocesium released by the severe nuclear accident and weapon test is a hazardous material. Illitic clays play key role in spatial distribution of radiocesium groundwater environments due to selective uptake sites at illite mineral, such as frayed edge sites. However, cesium capabilities illitic are diverse, which could be associated with crystallinity. This study was performed determine evaluate crystallinity effects on using statistical approaches. A total 10 showed various crystallinity,...
본 연구는 원자력 중대 사고 시, 환경에 유출된 방사성 세슘의 확산을 억제하기 위해 충북 영동지역 일라이트의 활용 가능성을 평가하였다. 영동 일라이트는 운모질 편암의 열수변질 작용에 의해 형성되었으며, 주요 구성 광물은 석영, 장석, 일라이트이다. 저농도 세슘 용액을 사용한 회분식 흡착실험 결과, 흡착 분배 계수(Kd)는 약 4,200 L kg-1으로 다른 점토 광물에 비해 비교적 높은 값을 가지며, 이는 일라이트에 존재하는 풍화된 모서리면(FES)의 영향으로 판단된다. 일라이트와 흡착등온선은 비선형 특성을 나타내며 단일 표면 한계 능력이 250,000 μg 우수한 흡착능을 보여주어 흡착제로서의 사용 입증하였다. 이러한 결과는 추후 방사능 누출 등의 긴급 상황 발생 지역 일라이트를 오염 확산 방지 및 정화작업에 사용하기 위한 평가 자료로 활용될 것으로 기대된다.
Abstract CO 2 ‐driven cold‐water geysers periodically ejecting cold water are rare. Although coalescence and expansion of ascending bubbles can explain the eruption process, triggering conditions cycle remain unclear. To clarify conditions, hydrostatic pressure in well was decreased by pumping to induce eruptions. All four tests successfully induced eruptions decreasing ∼10 4 Pa. In absence artificial perturbations, similar reductions were observed during intervals between two consecutive...
Bentonite, predominantly consists of expandable clay minerals, is considered to be the suitable buffering material in high-level radioactive waste disposal repository due its large swelling property and low permeability.Additionally, bentonite has cation exchange capacity specific surface area, thus, it effectively retards transport leaked radionuclides surrounding environments.This study aims review thermodynamic sorption models for four (U, Am, Se, Eu) eight bentonites.Then, optimized...