MgAl和 ZnAl层叠的双氧化物作为有效的吸收剂,用于从水中回收
Inês D Borges1,2,3, Cláudia M Rocha2, Frederico Maia2
1University of Coimbra, CERES, Department of Chemical Engineering 3030-790 Coimbra Portugal ines.borges@student.uc.pt guida@eq.uc.pt.
RSC advances
|November 21, 2025
概括
从水中回收是至关重要的,因为全球稀缺和缩. ZnAlNO3具有很高的酸盐去除能力,使其成为治疗缩水流的有希望的,具有成本效益的吸附剂.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
背景情况:
- 全球稀缺和水生环境的高化需要有效地从水中回收.
- 层状双氧化物 (LDH) 和层状双氧化物 (LDO) 是具有高吸附能力的新兴材料,用于去除.
研究的目的:
- 为了评估化MgAl-LDO,ZnAlNO3和化ZnAl-LDO的酸盐去除性能.
- 评估化对这些材料吸附能力的影响.
- 调查这些材料的可扩展性,用于实际应用.
主要方法:
- 使用三种不同的材料进行了批量吸附实验:化MgAl-LDO,ZnAlNO3和化ZnAl-LDO.
- 材料在吸附前后使用X射线衍射 (XRD) 和富里埃变换红外光谱 (FTIR) 进行了表征.
- 使用伪二次模型分析了酸盐去除动力学,并将平衡数据与Langmuir等热法相匹配.
主要成果:
- 化和非化材料都遵循伪二次动力学来去除.
- ZnAlNO3的去除能力高于化 ZnAl-LDO,这表明化并没有增强其吸收能力.
- 兰木尔等热法最好地描述了ZnAlNO3的平衡数据,其最大吸附能力为84mgg-1.1.
结论:
- ZnAlNO3 是一种高效的吸收剂,用于酸盐的去除,显示出大量的潜力,以治疗化的水.
- "记忆效应"在MgAl-LDO在再水后被观察到,而ZnAl-LDO保留了其金属氧化物状态.
- 这些材料的大规模可制造性支持它们在回收中具有实用性和成本效益的应用潜力.
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