奇托/聚烯酸-乙酸-乙烯酸) 水凝珠用于从水溶液中去除Cu2+
Irina Popescu1, Irina Mihaela Pelin1, Dana Mihaela Suflet1
1"Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania.
Gels (Basel, Switzerland)
|August 28, 2024
概括
新的基托基水凝珠有效地从水中去除Cu2+离子. 这些可重复使用,多孔的珠子显示出高吸附能力,为重金属修复提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 聚合物化学 聚合物化学
背景情况:
- 奇托和聚烯酸-乙烯酸) 用于凝制备.
- 共价交联增强了水凝在各种pH水平的稳定性.
- 水凝珠具有适合离子吸附的多孔结构.
研究的目的:
- 为了合成和表征共价交叉连接的水凝珠.
- 为了研究Cu2+离子的吸附能力和动力学.
- 评估水凝珠在环境应用中的可重复使用性.
主要方法:
- 水凝珠使用奇托和聚烯酸-乙烯酸-乙烯酸制备.
- 使用FT-IR光谱和SEM显微镜监测结构变化.
- 使用批量实验分析了Cu2+离子吸附,将数据与伪二次动力学和Langmuir/Sips等温度相匹配.
主要成果:
- 由于共价交联,水凝珠在酸性和性pH条件下表现出稳定性.
- 最大吸收能力达到了142.4毫克Cu2+g-1与3:1摩尔比例的共聚合物到奇托.
- 吸附动力学遵循伪二阶模型,平衡数据适合兰格穆尔和西普斯等热量.
- 水凝珠在五个吸附/脱附周期中保持了高吸附能力,这表明它们具有很好的可重复使用性.
结论:
- 共价交联奇托/聚烯酸-乙酸-乙烯酸) 水凝珠是Cu2+去除的有效吸附剂.
- 该材料的性能,包括多孔性和pH稳定性,有助于其高吸附效率.
- 经过证明的可重复使用性使得这些水凝珠成为污水处理的可持续选择.
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