一种基于 (Ce) 的氨基/聚乙烯醇水凝,用于有效和选择性地从自然水和实际废水中去除酸盐
Zijun Yang1, Xuexue Yin2, Zixuan Wang3
1College of Civil Engineering and Transportation, Hohai University, Nanjing 210098, China.
International journal of biological macromolecules
|April 3, 2025
概括
一种基于 (Ce) 的新型水凝吸附剂 (Ce-PVA/TA/TETA) 提供了高效和环保的从水中去除酸盐. 这种先进的材料表现出高吸附能力和选择性,有助于控制育.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 水处理 处理水的方法
背景情况:
- 酸盐污染是一个严重的环境问题,导致水体的环氧化.
- 从自然和废水中去除酸盐的有效和可持续方法至关重要.
研究的目的:
- 合成一种具有成本效益,环保和高效率的 (Ce) 基聚乙烯醇/坦宁水凝吸附剂,经过三乙烯四胺 (Ce-PVA/TA/TETA) 改性.
- 评估合成凝的酸盐吸附能力,选择性和去除效率.
- 研究各种条件下的吸附机制和性能.
主要方法:
- 使用聚乙烯醇和宁的凝合成.
- 与H3BO3交叉连接,通过共同沉加载,并与三乙烯四胺氨化.
- 酸盐吸附实验,动力和异温建模 (伪二阶和兰木尔模型),和表征 (泽塔电位,FTIR,XPS).
主要成果:
- Ce-PVA/TA/TETA水凝在pH值3.0和25°C时具有110.88mg/g的最大吸附能力.
- 在广泛的pH范围 (3.0-12.0) 中观察到高吸附效率和酸盐的选择性.
- 吸附动力学和异热量被伪二阶模型和兰迈尔模型分别描述得很好,这表明单层化学吸附.
结论:
- 合成的Ce-PVA/TA/TETA水凝是一种高效和选择性的吸附剂,用于酸盐去除.
- 吸附机制涉及静电吸引,带交换和内部扩散.
- 这种水凝显示出在酸盐管理和减轻自然水和废水中环保化的实际应用方面的巨大潜力.
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