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通过天然矿物质材料过具有不同功能组的聚乙烯纳米塑料:性能和机制

Hao Wang¹, Yu Wang¹, Tongyu Zhang¹

¹College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China.

Marine pollution bulletin

|February 9, 2024

概括

石灰岩在快速沙子过器 (RSF) 中有效地去除纳米塑料 (NP),不同于石英沙,岩或砂. 这种天然材料为水处理中的NP污染提供了有希望的解决方案.

科学领域:

环境科学环境科学
水处理工程水处理工程
材料科学材料科学材料科学

背景情况:

纳米塑料 (NP) 污染对环境构成重大挑战.
有效地从水中去除NP对于污染预防和整治至关重要.
快速沙过器 (RSF) 在水处理中很常见,但它们的NP清除效率需要优化.

研究的目的:

评估天然颗粒材料 (砂,焦岩,石灰岩) 提高RSF中的NP去除的潜力.
为了比较这些材料与传统石英砂的性能.
了解最有效材料去除NP背后的机制.

主要方法:

使用修改了砂,岩和石灰岩的RSF进行了柱体实验.
作为模型污染物,使用了原始,氨基基改性和碳酸改性聚乙烯NP (100nm).
测量了NP去除效率,并研究了去除机制.

主要成果:

石英砂显示了可以忽略不计的NP去除.
石和砂并没有显著改善NP过.
石灰石修改后的RSF显示显著增强了所有测试的NP的去除.
移除效率随着较小的NP大小和较高的石灰岩剂量而增加.
石灰岩的有效性归因于静电相互作用,电离桥梁和表面粗性.

结论:

颗粒状石灰岩显示出显著的希望,以改善快速沙子过器中纳米塑料的去除.
石灰岩独特的物理化学特性促进了有效的NP捕获,克服了功能群的影响.
这项研究强调了石灰岩作为一种成本效益和高效的过介质在水处理中用于NP整治的潜在应用.

关键词:

函数组是指功能组中的函数组.石灰石的颗粒石灰石的颗粒.纳米塑料是一种纳米塑料.快速的沙子过器过器粗性形态学粗性形态学

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