生物炭和碳甲基纤维素 (CMC) 改善了土壤基质,用于处理高速公路雨水排水
Tianhong Zhou1,2,3, Douhong Yang1,2, Huidong Shen1,2
1School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China.
Environmental geochemistry and health
|March 20, 2025
概括
这项研究改进了在沙土中使用大米生物炭和甲基纤维素 (CMC) 的高速公路排水处理. 优化的混合物有效地去除重金属和营养物质,改善土壤的保留水,以更好地保护环境.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 水处理工程水处理工程
背景情况:
- 高速公路的排水带来了重大的环境风险,特别是重金属和营养污染.
- 不良的土壤保留水量加剧了排水问题,影响了像山国家公园这样的当地生态系统.
研究的目的:
- 调查土壤修改在处理高速公路下水的有效性.
- 加强污染物去除,改善沙土中的水/肥料保留.
主要方法:
- 评估的碳素甲基纤维素 (CMC),玉米生物炭,玉米生物炭和米生物炭.
- 进行了透性,蒸发和静态吸附测试.
- 优化土壤混合与石英砂,大米生物炭和CMC用于柱体实验.
主要成果:
- 一种6:6的土壤与石英砂的土壤混合物,5%的水皮生物炭和0.1%的CMC显著改善了污染物吸附和土壤保持水分.
- 实现了氨 (81.75%),总 (66.72%),化学氧气需求 (77.97%),铜 (II) (91.94%) 和 (VI) (84.18%) 的高去除率.
- 将重金属转化为稳定的残留形式,减少迁移风险和环境影响.
结论:
- 优化的土壤修改有效地处理高速公路的下水,去除污染物并增强土壤功能.
- 这种方法提供了一种可持续的解决方案,用于在生态敏感地区管理高速公路下水污染.
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