用于柴油污染地下水管理的SEBS修改的现场混合墙体材料
Zhe-Yuan Jiang1, Xian-Lei Fu1, Fei Jin2
1Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China.
Journal of hazardous materials
|March 22, 2025
概括
styrene-ethylene-butylene-styrene (SEBS) 修正案有效地减少了柴油在地下水中的迁移. 这种新型材料显著降低了液压导电性,为工业污染场所提供了一个有前途的解决方案.
科学领域:
- 环境工程 环境工程
- 地质技术工程 地质技术工程
- 材料科学 是一种材料科学.
背景情况:
- 地下水中的柴油污染对环境和健康构成重大风险.
- 对于工业污染场所而言,创新的制策略至关重要.
研究的目的:
- 为了评估乙烯-乙烯-乙烯-乙烯 (SEBS) 修改的本托尼特在缓解地下水中的横向柴油迁移中的有效性.
- 评估新型屏障材料的液压性能和微观结构变化.
主要方法:
- 开发了一种新型的现场混合墙体材料,使用SEBS修改的土和老旧的柴油污染沙子.
- 进行了灵活墙体液压导电性测试,以测量柴油导电性 (k柴油).
- 用X射线微型计算机断层扫描 (micro-CT) 来分析毛孔结构和连接性.
主要成果:
- 根据SEBS修正案,在25%的SEBS含量下,k柴油显著降低到8.7 × 10-12 m/s,而未经修改的顿岩则降低到1.8 × 10-8 m/s.
- 微CT分析显示,柴油充满的连接孔隙与断开孔隙的比率从3.0降至0.6.
- 塞布斯表现出优越的膨胀,凝和柴油吸收性能.
结论:
- 修改SEBS的本托尼特是一种非常有效的材料,可以抑制地下水中的柴油污染.
- 增强的液压性能归因于SEBS的物理和化学特性.
- 这种材料是传统修饰剂的可行替代品,用于管理非水相液体 (NAPL) 污染.
关键词:
液压导电能力 液压导电能力在现场的混合墙壁.被石油碳化合物污染的地下水.孔径通道连接的连接性经过修改的 styrene-ethylene-butylene-styrene (SEBS) 的本托尼特.更多相关视频
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