• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Migration and Fate of Acid Mine Drainage Pollutants in Calcareous Soil
【2h】

Migration and Fate of Acid Mine Drainage Pollutants in Calcareous Soil

机译：石灰性土壤中酸性矿山排水污染物的迁移和归宿

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

As a major province of mineral resources in China, Shanxi currently has 6000 mines of various types, and acid mine drainage (AMD) is a major pollutant from the mining industry. Calcareous soil is dominant in western North China (including the Shanxi Province), therefore, clarifying the migration behavior of the main AMD pollutants (H+, S, Fe, heavy metals) in calcareous soil is essential for remediating AMD-contaminated soil in North China. In this study, the migration behavior of the main pollutants from AMD in calcareous soil was investigated using soil columns containing 20 cm of surficial soil to which different volumes of simulated AMD were added in 20 applications. Filtrate that was discharged from the soil columns and the soil samples from the columns were analyzed. Almost all of the Fe ions (>99%) from the AMD were intercepted in the 0–20 cm depth of the soil. Although >80% of SO42− was retained, the retention efficiency of the soil for SO42− was lower than it was for Fe. Cu, as a representative of heavy metals that are contained in AMD, was nearly totally retained by the calcareous soil. However, Cu had a tendency to migrate downward with the gradual acidification of the upper soil. In addition, CaCO3 was transformed into CaSO4 in AMD-contaminated soil. The outcomes of this study are valuable for understanding the pollution of calcareous soil by AMD and can provide key parameters for remediating AMD-contaminated soil.
机译：作为中国重要的矿产资源省，山西省目前拥有6000座各种类型的矿山，酸性矿井排水（AMD）是采矿业的主要污染物。钙质土壤在华北西部（包括山西省）占主导地位，因此，阐明钙质土壤中主要AMD污染物（H + ，S，Fe，重金属）的迁移行为对于修复华北受AMD污染的土壤。在这项研究中，使用包含20 cm表层土壤的土壤柱研究了AMD中主要污染物在钙质土壤中的迁移行为，并在20种应用中添加了不同体积的模拟AMD。分析了从土壤柱中排出的滤液和从土壤柱中取出的土壤样品。来自AMD的几乎所有Fe离子（> 99％）都在土壤0–20 cm深度处被截获。尽管保留了> 80％的SO4 2-，但是土壤对SO4 2-的保留效率却比Fe低。铜是AMD中所含重金属的代表，几乎全部被钙质土壤保留。但是，随着上层土壤的逐渐酸化，Cu有向下迁移的趋势。另外，在被AMD污染的土壤中，CaCO3转化为CaSO4。这项研究的结果对于理解AMD对钙质土壤的污染非常有价值，并且可以为补救AMD污染的土壤提供关键参数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号