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基于FeCa的分层双氧化物,在建造的湿地和生态水中是一种高性能吸附剂 - 一项试点规模的研究

Wei-Dong Feng¹, Hu Cui², Hui Zhu²

¹Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; State Key Laboratory of Black Soils Conservation and Utilization, Changchun, 130102, China; University of Chinese Academy of Sciences, Beijing, 100049, China.

|August 9, 2023

概括

一种新的铁层双氧化物 (FeCa-LDH) 有效地从废水中去除建筑湿地和生态水中的. 这种材料即使在低温下也表现出高效率,为净化水提供了有前途的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
水处理处理水的方法

背景情况:

建筑湿地 (CWs) 和生态水中的传统除方法通常涉及对现有材料进行修改.
开发新的纳米吸收剂是提高去除效率的替代方法.

研究的目的:

合成和研究一种基于FeCa的新型分层双氧化物 (FeCa-LDH) 的性能,机制和影响因素,用于去除.
评估FeCa-LDH在建造湿地和生态水中的有效性.

主要方法:

化学联合沉方法被用于合成FeCa-LDH.
福利埃变换红外光谱法 (FTIR) 和X射线光电子光谱法 (XPS) 用于阐明吸附机制.
在各种条件下测试了去除效率,包括不同的pH值,并存的离子和温度.

主要成果:

FeCa-LDH实现了高去除效率,在CW中达到94.4%,在生态水中达到98.2%.
吸附机制包括静电相互作用,结合,协调反应和离子交换.
与酸性条件相比,和中性条件下去除更有效.
阳离子的存在影响了去除效率,顺序是:CO3^2- ≈ HCO3- > SO4^2- > NO3-.
FeCa-LDH在低温 (5°C) 上保持了高效率,克服了传统CW的局限性.

结论:

FeCa-LDH是一种高效的吸附剂,用于废水处理系统中去除.
该材料的性能受到pH值和共存的离子的影响,但在低温下具有强度.
这项研究为FeCa-LDH在管理的建造湿地和生态水中的应用和性能提供了新的见解.

关键词:

建造的湿地建造的湿地生态大生态大在FeCa-LDH的基础上.是一种的物质.废水是废水,废水就是废水.

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