在旧矿山尾矿中化的发生和流动性
Jaabir D Ali1, Adriana Guatame-Garcia1, Heather E Jamieson1
1Department of Geological Sciences & Engineering, Queen's University, Kingston, Ontario, Canada.
The Science of the total environment
|April 24, 2024
概括
在加拿大矿山尾矿中发现了化物种,包括单化. 这些化合物在循环中具有重要意义,并且需要考虑在矿山废物中管理.
科学领域:
- 环境地质化学环境地质化学
- 环境科学 环境科学
- 采矿工程 采矿工程 采矿工程
背景情况:
- 在安大略省和新斯科舍省的旧矿山尾矿中含有大量的度.
- 矿山废物中的 (As) 变异会影响其环境流动性和毒性.
- 化物种是受影响的环境中令人担忧的新兴污染物.
研究的目的:
- 调查加拿大遗留尾矿中溶解硫化的发生情况和地化学控制.
- 量化化物种对溶解总负载的贡献.
- 评估氧化还原条件,水化学和矿物学对硫化分布的作用.
主要方法:
- 对来自安大略省和新斯科舍省尾矿场的样本进行了水性和矿物学物种分析.
- 对孔水和地表水样本进行了溶解物种,包括硫酸盐的分析.
- 测量了诸如氧化还原潜力和水化学等地化学参数,以与物种化相关联.
主要成果:
- 在安大略省和新斯科舍省的尾矿中检测到大量的溶解硫化 (高达总溶解的17.3%).
- 单亚酸盐是主导的硫化物种,含有较少量的二,三亚酸盐和甲基化亚酸盐.
- 溶解硫化的度与亚氧氧氧还原条件和特定的孔水水化学有很强的相关性.
结论:
- 硫化物种是矿山废物系统中生物地球化学循环的重要组成部分.
- 这些发现凸显了在评估和管理旧矿山尾矿中的过程中需要包括硫化的物种化.
- 了解这些物种对于开发高矿场有效的修复策略至关重要.
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