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用聚乙烯胺基改性铁化伯尼石作为高稳定性吸附剂,有效去除

Peng Yu¹, Junying Xing¹, Jing Tang²

¹School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, China.

Journal of colloid and interface science

|January 31, 2024

概括

用聚乙烯胺 (Fe-Bir/PEI) 涂覆的新型铁伯尼石有效地从水和土壤中去除. 这种稳定的吸附剂具有高容量,广泛的pH适用性和良好的可重复使用性,为污染提供了有希望的解决方案.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

水和土壤中的污染由于其毒性和流动性,造成了严重的环境和健康风险.
有效的补救策略对于减轻污染的广泛影响至关重要.

研究的目的:

开发和描述一种用于有效去除的新型吸附剂.
研究新材料的吸附能力,稳定性和可重复使用性.
为了阐明由开发的吸附剂去除的机制.

主要方法:

用聚乙烯胺 (Fe-Bir/PEI) 涂覆的铁合的伯尼石的合成.
使用SEM,XRD,FTIR和XPS进行表征,以分析微观结构和组成.
吸附实验在广泛的pH值范围内,在存在共存离子的情况下进行.
在模拟污染土壤中评估吸附剂的可重复使用性和性能.

主要成果:

铁/PEI具有稳定的结构,有大量的吸附活性位点.
吸附剂具有很高的去除能力 (53.86 mg/g 在pH 7下),在pH 3-11之间有效工作.
同时存在的离子不会显著影响的去除,并且该材料显示出很好的重复利用性,漏最小.
铁/PEI有效地修复了被污染的土壤,并吸附了As(V) 物种,与未经修改的吸附剂不同.

结论:

铁/PEI是一种稳定且高效的吸附剂,用于水和土壤环境中的修复.
吸附剂的性能归因于其独特的结构和氧化还原,静电吸引和结合的协同效应.
开发的材料为解决污染挑战提供了一个有希望的,可重复使用的解决方案.

关键词:

清除除的方法用铁添加的鸟石.对于PEI的修改是PEI修改.移除机制移除机制可重复使用性可重复使用性

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