在卡斯特地区炼厂周围的土壤中释放的及其对环境的影响
Zaiju Jiang1, Lu Liao2, Xuexian Li3
1College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China; Guizhou Coal Mine Geology and Geological Engineering Consulting Environmental Monitoring Center, Guiyang, 550081, China.
Environmental pollution (Barking, Essex : 1987)
|April 14, 2025
概括
在中性至性土壤中,反 (Sb) 浸出率更高,土壤有机物 (OM) 显著降低了Sb的流动性. 增加OM和管理pH是修复受Sb污染的地土壤的关键.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 反 (Sb) 土壤污染带来了通过漏的二次污染的风险.
- 富含碳酸盐土壤的地地区特别容易受到Sb调动的影响.
研究的目的:
- 为了研究碳酸盐丰富土壤中的反 (Sb) 释放动态.
- 为了确定pH和有机物质 (OM) 对Sb调动的影响.
- 了解中国南部的炼区中的漏机制.
主要方法:
- 在受控的pH条件下进行实验 (4.5,6.0,7.5).
- 评估含有和不含有土壤有机物 (OM) 的Sb释放情况.
- 对Sb释放动力学和影响因素的分析.
主要成果:
- Sb的释放遵循了三相模式:快速的初始释放,中期吸附抑制和后期的二次释放.
- 在中性到弱性土壤 (pH 6.0-7.5) 中观察到较高的Sb出率.
- 移除OM显著增强了Sb释放 (3.21-4.09倍),抑制率为50.01-76.86%.
结论:
- 土壤有机物 (OM) 通过复杂化和聚合物形成有效地降低了Sb的流动性.
- 中性至性条件增强了Sb的释放,增加了地土壤中的污染风险.
- 增加OM度和调节pH值对于控制岩地区的Sb污染至关重要.
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