在新型深共晶溶剂介质中使用磷酸三丁酯加强从 Sr(II) 中分离 Y(III)

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL AIChE Journal Pub Date : 2024-08-10 DOI:10.1002/aic.18552

Qi Zhao, Fei Wu, Amelie Andrea Shih, Chu Kin Fung, Pengyuan Gao, Mengxian Liu

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引用次数: 0

摘要

研究人员开发了一种新型溶剂萃取系统，以磷酸三丁酯为萃取剂，有机溶剂为油酸（OA）和1-丁基-3-甲基氯化咪唑（[BMIM]Cl）组成的疏水性深共晶溶剂（DES），用于从Sr2+中分离Y3+。萃取实验表明，以 OA-[BMIM]Cl DES 为有机溶剂的萃取体系具有萃取速度快、对 Y3+ 的选择性好（Y/Sr 分离因子为 500）等优点，而使用正庚烷等传统分子溶剂的萃取体系很难达到这些优点。密度泛函理论计算也证实，与正庚烷相比，OA-[BMIM]Cl DES 作为有机溶剂在热力学上更有利于 Y/Sr 分离。提出了一种由两级萃取、一级洗涤和一级汽提组成的萃取工艺，从模拟溶液中选择性分离出 95.06% 的 Y3+，最终产品中 Y 的纯度达到 98.55%。

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Enhancing separation of Y(III) from Sr(II) using tributyl phosphate in a novel deep eutectic solvent media

A novel solvent extraction system was developed to separate Y³⁺ from Sr²⁺, where tributyl phosphate was chosen as an extractant and an organic solvent was a hydrophobic deep eutectic solvent (DES) consisting of oleic acid (OA) and 1-butyl-3-methylimidazolium chloride ([BMIM]Cl). The extraction experiment demonstrated that the extraction system using OA-[BMIM]Cl DES as an organic solvent exhibited great advantages of fast extraction and excellent selectivity for Y³⁺ (Y/Sr separation factor >500), which are hardly achieved in the extraction systems using conventional molecular solvent, for example, n-heptane. Density functional theory calculations also confirmed that the Y/Sr separation is more thermodynamically favorable in OA-[BMIM]Cl DES as an organic solvent compared to n-heptane. An extraction process comprising two-stage extraction, one-stage scrubbing, and one-stage stripping was proposed, achieving 95.06% of Y³⁺ selectively separated from a simulated solution and Y purity of 98.55% in the final product.

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.