Comparative analysis of lead and cadmium extraction capacities of hydrophobic deep eutectic solvents

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry Pub Date : 2024-08-25 DOI:10.1016/j.jiec.2024.08.033

Irfan Wazeer, Lahssen El blidi, Sarwono Mulyono, Ahmed Halilu, Hanee Farzana Hizaddin, Mohd Ali Hashim, Mohamed K. Hadj-Kali

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Abstract

In this study, a total of eight hydrophobic deep eutectic solvents (HDESs) were prepared and evaluated for their efficacy in extracting lead and cadmium from aqueous solutions. The physical and thermal properties of these HDESs were characterized. Among the HDESs tested, the thymol:decanoic acid system, with a molar ratio of 1:1, exhibited the highest distribution ratios for lead and cadmium, with values of 0.79 and 0.55, respectively. The extraction performance of the thymol:decanoic acid system was further investigated by considering various factors such as contact time, pH, mass ratio of water to HDES, and HDES molar ratio. After optimization, the thymol:decanoic acid HDES demonstrated significantly improved extraction efficiency for lead (up to 93.49 %) and cadmium (up to 76.70 %) at initial concentrations of 1000 ppm and 100 ppm, respectively. The extraction mechanism was found to be primarily driven by the complexation and partitioning effects of thymol:decanoic acid with lead or cadmium, as confirmed by the noticeable changes in harmonic frequencies (730, 1337, and 1515 cm) observed in the IR spectra analysis before and after extraction. Additionally, the performance of the thymol:decanoic acid HDES was evaluated through solvent regeneration using a multi-stage extraction and reuse approach.

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疏水性深共晶溶剂的铅镉萃取能力对比分析

本研究共制备了八种疏水性深共晶溶剂（HDES），并评估了它们从水溶液中萃取铅和镉的功效。对这些 HDES 的物理和热性能进行了表征。在测试的 HDES 中，摩尔比为 1:1 的百里酚：癸酸体系对铅和镉的分布比率最高，分别为 0.79 和 0.55。通过考虑接触时间、pH 值、水与 HDES 的质量比和 HDES 摩尔比等因素，进一步研究了百里酚癸酸体系的萃取性能。经过优化后，在初始浓度分别为 1000 ppm 和 100 ppm 时，百里酚：癸酸 HDES 对铅和镉的萃取效率有了显著提高，分别达到 93.49% 和 76.70%。萃取前后红外光谱分析中观察到的谐波频率（730、1337 和 1515 厘米）的明显变化证实，萃取机理主要是由百里酚癸酸与铅或镉的络合和分配效应驱动的。此外，还采用多级萃取和再利用方法，通过溶剂再生对百里酚癸酸 HDES 的性能进行了评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Industrial and Engineering Chemistry 工程技术-工程：化工

CiteScore

10.40

自引率

6.60%

发文量

639

审稿时长

29 days

期刊介绍： Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.