超声波增强型 N235 提取树脂在复杂体系下选择性动态提取锗的实验

IF 3.8 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-10-30 DOI:10.1016/j.cep.2024.110042

Shixiong Peng , Qifei Pei , Zhanqing Lu , Hongying Xia , Linqing Dai , Yingjie Xu , Libo Zhang

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引用次数: 0

摘要

锗在现代高科技材料领域发挥着不可替代的作用，是一种重要的战略金属资源。采用 N235 萃取树脂选择性地萃取 [Ge(C4O6H4)3]2-。在水浴超声功率为 120 W 的条件下，锗的萃取率为 97.32%。在三级串联固相萃取柱（单级填充 N235 萃取树脂 0.8 g）、反应温度 25 ℃、酒石酸浓度 2.0 g/L、停留时间 4.1min 的条件下，锌的萃取率为 2.37%。树脂的饱和吸附容量为 51.90 mg/g。在超声波辅助强化条件下，锗的萃取率提高了 14.4%。NaOH 溶液可将 [Ge(C4O6H4)3]2- 从树脂中分离出来。在水浴超声功率为 120W、3.5 mol/L NaOH 溶液浓度为 30ml、停留时间为 5.2min 的条件下，锗的解吸率为 94.12%。在最佳条件下，N235 萃取树脂重复再生 5 次后，萃取率为 85.23%。结果表明，该萃取树脂在复杂体系中具有高选择性和可重复性，为在复杂条件下萃取锗提供了一种新方法。

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Experiment on selective dynamic extraction of germanium by ultrasonic enhanced N235 extraction resin under complex system

Germanium plays an irreplaceable role in the field of modern high-tech materials and is an important strategic metal resource. N235 extraction resin was used to selectively extract [Ge(C₄O₆H₄)₃]^2-. Under the condition of ultrasonic power at 120 W in a water bath, the extraction rate of germanium was 97.32 %. The extraction rate of zinc was 2.37 % under the conditions of a three-stage solid phase extraction column in series (single-stage filling N235 extraction resin 0.8 g), reaction temperature 25 °C, tartaric acid concentration of 2.0 g/L, and the dwell time is 4.1min. The saturated adsorption capacity of the resin is 51.90 mg/g. The extraction rate of germanium increased by 14.4 % under ultrasonic-assisted strengthening conditions. The [Ge(C₄O₆H₄)₃]^2- can be separated from the resin by NaOH solution. The desorption rate of germanium was 94.12 % under the condition of water bath ultrasonic power of 120W, 30 ml concentration of 3.5 mol/L NaOH solution, and the dwell time is 5.2min. Under the optimum conditions, the extraction rate of N235 extraction resin was 85.23 % after repeated regeneration five times. The results demonstrate that the extraction resin exhibits high selectivity and reproducibility in complex systems, presenting a new method for extracting germanium under complex conditions.

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来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.