从水溶液中有效地去除Cr (VI),使用分层双氧化物材料的记忆效应特性
Ridouan Benhiti1, Abdeljalil Ait Ichou1, Abdelali Aboussabek1
1Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco.
Chemosphere
|September 10, 2023
概括
层状双氧化物 (LDH) 材料通过化-再化过程有效地从废水中去除. 这项研究突出了LDH.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 层状双氧化物 (LDH) 具有独特的记忆效应,可在热处理后进行结构重建.
- 该物业有望开发用于废水污染物修复的先进材料.
研究的目的:
- 研究化和再化LDH在从水溶液中去除六价 (Cr(VI)) 的有效性.
- 阐明吸附机制并评估LDH材料的可重复使用性,用于可持续的废水处理.
主要方法:
- 在Cr (VI) 溶液中制备,烧焦和再水LDH材料.
- 使用X射线衍射 (XRD),富里埃变换红外光谱 (FTIR) 和扫描电子显微镜与能量分散式X射线光谱 (SEM-EDS) 进行表征.
- 使用响应表面方法 (RSM) 优化去除参数,并将平衡数据与弗洛伊德利希模型相匹配.
主要成果:
- 用吸附成功重建LDH结构,通过分析技术证实了这一点.
- RSM确定LDH质量,接触时间和初始Cr (VI) 度是影响去除效率的关键因素.
- 吸附过程是内热,自发和物理性质的,在五个周期内具有很好的可重复使用性 (7%的容量损失).
结论:
- LDH的记忆效应促进了有效的Cr (VI) 污染物间隔和去除.
- 作为可重复使用的吸附剂,LDH显示出了有效的废水处理的巨大潜力.
- 该研究验证了LDH在应对新出现的环境污染物挑战中的应用.
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