在卡尔巴特河后的克林诺提洛利特的Na型上进行合
Emilia T Słota1, Volodymyr O Vasylechko1,2, Zinoviy M Yaremko1
1Department of Analytical Chemistry and Life Safety Department, Ivan Franko National University of Lviv, 6 Kyryla and Mefodiya Str., 79005 Lviv, Ukraine.
Heliyon
|November 3, 2023
概括
纳基修饰的克林诺皮托利特有效地从水溶液中吸收新 (Nd(III)). 最佳条件产生高吸附能力,显著优于自然和酸修饰形式的稀土元素去除.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 新 (Nd(III)) 是一种稀土元素,具有各种工业应用.
- 从水溶液中有效地去除 (III) 对于环境保护和资源回收至关重要.
- 克林诺皮托利特是一种天然的焦石,具有离子交换和吸附的潜力.
研究的目的:
- 在动态条件下,研究纳米修饰的卡尔巴底下克林诺提洛利特对新 (Nd(III)) 的吸附特性.
- 确定 Nd ((III) 吸附的最佳参数,包括 pH,温度和流量.
- 开发一种用于预度和光谱测定微量新的方法.
主要方法:
- 在动态流量条件下使用Na-修饰的clinoptilolite进行了吸附实验.
- 评估了度,溶液pH值和吸附剂热处理温度对吸附能力的影响.
- 使用各种酸性和盐溶液测试了溶解效率.
- 一种结合光谱光度的固相提取方法被开发用于的确定.
主要成果:
- 与天然和酸修饰形式相比,Na-修饰的clinoptilolite具有显著更高的Nd(III) 吸附能力 (7.2 mg g-1).
- 在pH 8.5和75°C的预热温度下发生了最佳吸附,主要是通过化3.0的吸附.
- 增加的流速降低了吸附能力,这是由于减少了静止表面层厚度.
- 矿物酸和酸性金属盐 (NaCl除外) 是有效的消吸剂 (93-98%的提取率).
- 开发的光谱光度测量方法实现了0.75 ng mL-1的微量新的检测极限.
结论:
- 纳基修饰的卡尔巴特河后克林诺提洛是一种高效的吸附剂,可在动态条件下从水溶液中去除.
- 该研究提供了一种优化方法,用于微量的预度和确定,这对于环境监测和稀土元素回收非常有价值.
相关概念视频
03:46Qualitative Analysis
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For instance, group IV...
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Crystal Field Theory
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To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
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