在Gaomiaozi bentonite上吸Se(IV):批量和光谱研究
1Spatial Information Acquisition and Application Joint Laboratory of Anhui Province, College of Civil Engineering, Tongling University, Tongling, 244000, China.
Journal of environmental radioactivity
|May 9, 2025
概括
-79在本托尼特上的吸附对于放射性废物处理至关重要. 高米亚本托尼特在酸性pH和高离子强度下显示出高吸收,没有观察到氧化还原反应.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- -79是一种长寿命的放射性核化物,对放射性废物管理构成挑战.
- 了解在本托尼特上的吸附对于安全的地质处置策略至关重要.
研究的目的:
- 在低度下研究的吸附行为 (IV) 在Gaomiaozi bentonite上.
- 为了确定环境因素对吸附的影响.
- 为了阐明本托尼特-水接口的吸附机制.
主要方法:
- 进行了批量吸附实验.
- 使用了光谱技术,包括XPS.
- 用物种计算和光子相关谱法来解释机制.
主要成果:
- 在酸性pH值和高离子强度下,Gaomiaozi托尼特表现出显著的吸能力.
- (IV) 在本托尼特表面上保持稳定,没有氧化还原反应.
- 由于电气双层效应,低离子强度阻碍了的吸收.
结论:
- 该研究提供了用于放射性废物处理的在本托尼特上的吸附的关键参数.
- 这些发现有助于更好地理解在储存环境中的地化学行为.
- 石的吸附能力受pH值和离子强度的影响,而不是主要是粒子聚合.
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