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岩中的 Zn 和 Cu 的移动性:对环境修复的影响

Edyta Nartowska¹, Anna Podlasek², Magdalena Daria Vaverková^2,3

¹Faculty of Environmental Engineering, Geomatics and Renewable Energy, Kielce University of Technology, 25-314 Kielce, Poland.

Materials (Basel, Switzerland)

|June 27, 2024

概括

这项研究表明,有毒金属度增加了矿中的铜 (Cu) 和 (Zn) 流动性. 较高的粘土含量提高了金属离子的稳定性,这对于了解寒冷地区的粘土水环境至关重要.

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:

石的有效性可能会受到金属相互作用的负面影响.
关于矿中的铜 (Cu) 和 (Zn) 流动性及其对未水含量的影响的研究有限.

研究的目的:

为了评估矿中的Cu和Zn的移动性.
评估金属流动性对本托尼特属性和未水含量的影响.
了解金属粘土相互作用,以防止负面影响.

主要方法:

使用美国 (SWy-3,Stx-1b) 和斯洛伐克 (BSvk) 的顿石与 Zn 或 Cu 的离子交换实验.
使用社区参考局 (BCR) 方法进行顺序提取.
通过感应合等离子光学发射光谱法 (ICP-OES) 进行元素分析.
使用核磁共振 (1H-NMR) 和差分扫描热度计 (DSC) 测量未水含量.

主要成果:

有毒金属度增加了离子流动性,减少了残留分数.
移动 Zn 分数与更大的粒子直径,更低的粘土含量和更短的平面间距相关.
的移动性显示出与Zn相反的趋势,Zn积聚在更大的孔隙中,在本托尼特复合体中固定不动.
金属离子的稳定性随着较高的粘土含量和特定表面积而增加.

结论:

石的特性和未水含量受到Cu和Zn离子流动性的显著影响.
在未受污染的本托尼特中,较高的未水含量与较高的残留金属分数相关,表明在寒冷地区存在潜在风险.
了解金属的移动性对于预测本托尼特的行为和环境影响至关重要,特别是在零度以下的温度条件下.

关键词:

班托尼特 (bentonite) 是一种石头.环境保护环境保护环境保护有毒金属的移动性有毒金属的移动性孔隙吸附剂的物理化学特征.没有结的水含量.

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