用离子打印的aminoguanidine-chitosan用于从废水中选择性识别 (III)
Nadia H Elsayed1, Nasser A Alamrani2, Raedah A S Alatawi2
1Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia; Center for Renewable Energy and Environmental Technologies, University of Tabuk, Tabuk Saudi Arabia.
概括
开发了一种新型的aminoguanidine-chitosan (AGCS) 吸附剂,用于有效地从废水中去除La3+离子. 离子印制的La-AGCS材料具有高容量和选择性,提供有效的环境解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 聚合物化学 聚合物化学
背景情况:
- 废水中的兰 (La3+) 离子污染对环境构成风险.
- 开发高效和选择性的吸附剂材料对于La3+补救至关重要.
- 基于酸盐的材料由于其生物相容性和可调节性质而具有潜力.
研究的目的:
- 为了合成和描述一种新的离子印记吸附剂,用于La3+的去除.
- 研究开发的吸附剂的吸附能力,机制和选择性.
- 评估材料的环境适用性,以进行La3+补救.
主要方法:
- 基托桑的修改,以产生酸基托桑 (CAC) 和氨基瓜尼丁-基托桑 (AGCS).
- 使用La3+离子和化水素 (ECH) 交叉链接形成La3+离子印记吸附剂 (La-AGCS) 的离子印记技术.
- 使用FTIR,NMR,元素分析和SEM进行表征;根据Langmuir和伪二阶模型进行吸附研究.
主要成果:
- 拉-AGCS表现出高度多孔的结构和最大吸附能力为286±1毫克/g的La3+.
- 吸附遵循兰格穆尔和伪二阶动力学,表明化学吸附.
- 吸附剂对La3+比其他金属离子具有出色的选择性,选择性系数从4到13.
结论:
- 开发的La-AGCS吸附剂对于从水溶液中去除La3+是非常有效的.
- 离子打印策略成功创造了一种具有高容量和选择性的材料.
- 这种先进的材料为环境中La3+污染的环境修复提供了有希望的解决方案.
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