修饰剂对石墨废弃物土壤水特性的影响
Changbo Du1, Xinxin Lu1, Fu Yi2,3
1College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China.
Scientific reports
|February 20, 2024
概括
将河流泥和奶牛粉添加到石墨尾矿中,可以提高它们的水容量和结构紧性. 用4克牛粉和30克河流泥获得最佳效果,提高了矿山回收潜力.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 材料科学 材料科学 材料科学
背景情况:
- 石墨尾矿带来了环境挑战,并代表了未充分利用的资源.
- 提高石墨尾矿的水容量对于生态恢复和土地回收至关重要.
- 有机物质的修改有效地改变了土壤的物理性质.
研究的目的:
- 调查河流泥和牛粉对石墨尾矿土壤水特性的影响.
- 确定有机物改善剂的最佳比率,以提高水容量和结构完整性.
- 为了验证范·格努特模型用于描述改性石墨尾矿的液压性能的适用性.
主要方法:
- 石墨尾矿被修改为不同比例的河流泥 (20,30,50g) 和固定数量的奶牛粉 (4g).
- 使用压力计和纸联合方法确定了土壤水特性曲线.
- 范·格努特模型被用于数据的拟合和孔隙结构的分析.
主要成果:
- 有机物修改显著改善了石墨尾矿的结构紧性和水容量.
- 增加的河流泥含量导致和水含量更高.
- 剩余水含量达到3.32%的峰值,其中30g的河流污泥,表明最佳的保留水.
- 范·格努赫顿模型在描述修改后的尾矿的液压性能方面表现得非常准确.
- 使用4克牛粉和30克河流泥土,可以达到最佳的内部结构和保持水的容量.
结论:
- 石墨废弃物与有机物修正物的综合利用为资源回收提供了可行的解决方案.
- 该研究为石墨尾矿回收提供了理论基础,并强调了液压特性参数的重要性.
- 这些发现指导了在工程项目中应用改性石墨尾矿的应用,特别是用于矿山土地恢复.
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