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从模拟的拜耳溶液中有效分离,和,通过树脂交换

Zhifeng Qin^1,2, Xi Jin³, Zhen Yang¹

¹State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Researh Institute Co., Ltd., Panzhihua 617000, China.

Materials (Basel, Switzerland)

|August 29, 2024

概括

这项研究表明,一种强烈的酸性 styrene 离子交换树脂 (JK 树脂) 从拜耳工艺废水中有效地回收. JK树脂证明了高效地将离子从和离子分离出来.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

从拜耳工艺废水中回收是可持续资源开发的关键.
现有的回收方法在效率和选择性方面面临挑战.
强烈的酸性 styrene 离子交换树脂具有选择性离子吸附的潜力.

研究的目的:

为了研究从模拟的拜耳溶液中的JK树脂上的 (Ga), (V) 和 (Al) 离子的吸附和脱附行为.
确定将Ga从V和Al中分离的最佳条件.
为了阐明吸附机制,并评估树脂的工业应用潜力.

主要方法:

使用模拟的拜耳溶液进行静态吸附和脱附实验.
动力学和异热学研究以建模吸附过程.
里叶变换红外 (FT-IR) 光谱和X射线光电子光谱 (XPS) 用于机制阐明.

主要成果:

在低温 (25°C) 和短接触时间 (60分钟) 中实现了Ga与V和Al的最佳分离.
吸附动力学遵循伪二阶模型,其静态和吸附能力为Ga的18.25 mg/g.
兰慕尔模型配备了吸附异热井,在25°C时显示最大吸附能力为1.11mg/g.
FT-IR和XPS证实Ga3+吸附机制涉及与胺氧基组氧原子的相互作用.
实现了高效的脱吸: 98% Al 用氨和 90% Ga 用盐酸.

结论:

JK树脂是一种高效的吸附剂,用于在性溶液中分离和.
该研究提供了一种从工业废水中回收的可行方法.
这些发现支持通过有效的废水处理来长期开发资源.

关键词:

吸附吸附是一种吸附.(Gallium) 是一种的物质.离子交换离子交换离子交换分离式隔离器的使用方法瓦纳是什么意思瓦纳是什么意思

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