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从水中去除和,用泥基生物炭去除和,用蒙特莫里隆石改性,加上纳米零价值铁

Dezhi Xu¹, Xiulei Fan², Qing Chen³

¹School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China.

Water science and technology : a journal of the International Association on Water Pollution Research

|March 7, 2025

概括

改性污泥生物炭有效地从水中去除和. 最好的吸附剂,nZVI@MBC,显示了和的高吸附能力,为废水处理提供了可持续的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

污水污泥生物炭是水处理的有前途的吸附剂.
提高生物炭对和等营养素的吸附能力对于资源利用和环境修复至关重要.

研究的目的:

准备和优化改性污泥基生物炭,以提高从水生环境中去除和.
研究修改生物炭的物理化学特性和吸附机制.

主要方法:

污水污泥被烧解以制造生物炭,随后被蒙特莫里隆石 (Mt) 和纳米零价值铁 (nZVI) 修改.
使用FTIR,XRD,BET,SEM和XPS分析了物理化学特性.
研究了吸附动力学和异温,以评估性能和机制.

主要成果:

使用Mt和nZVI进行修改,改善了生物炭的特定表面积和表面功能组.
结合的Mt和nZVI修饰生物炭 (nZVI@MBC) 显示出对 (NH4+) 和 (PO3-) 的吸附性优越.
nZVI@MBC实现了NH的最大吸附能力为34.84 mg·g-1和PO的最大吸附能力为294.12 mg·g-1 .

结论:

nZVI@MBC复合材料在去除和方面表现出色,超过现有的改性污泥生物炭.
吸附机制包括连接物交换,静电吸引,离子结合,化学沉和共沉.
这项研究强调了一种用于污泥资源利用和水生环境有效处理的新方法.

关键词:

吸附吸附是一种吸附.氨是一种.这是一种蒙特莫里隆石 (Montmorillonite).纳米零价值铁是什么意思酸盐酸盐的使用方法基于污泥的生物炭.

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