In Situ Microscope Measurements and Analysis of the Passing of Individual Paramagnetic Particles through the Interfaces of Aqueous Two-Phase Systems by Magnetic Force

IF 0.6 4区工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY

Solvent Extraction Research and Development, Japan Pub Date : 2018-01-01 DOI:10.15261/SERDJ.25.91

K. Katayama, S. Tsukahara

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引用次数: 0

Abstract

The interfacial tensions of aqueous two-phase systems (ATPS) are commonly much lower than those of common oil/water interfaces. Micrometerto mm-sized particles tend not to pass through liquid/liquid interfaces and tend to be trapped there. In the present study, the passing of m-sized ferromagnetic and paramagnetic particles through ATPS interfaces was examined using a magnetic force by microscope observation. Ferromagnetic particles were aggregated at the ATPS interface under a magnetic field. Mn2+-adsorbed cation-exchange resin particles are not ferromagnetic but paramagnetic, and they were not aggregated. The individual Mn2+-adsorbed particles were drawn down from the interface by a downward magnetic force and then released. The forces on the particles, the gravitational force, the buoyancy, the magnetic force, and the force caused by the interfacial tension, were calculated or estimated from the experimental results. The present method is a fundamental study to develop a separation method for m-sized particles using liquid/liquid interfaces.

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单个顺磁粒子在磁力作用下通过水两相体系界面的原位显微镜测量与分析

水两相体系(ATPS)的界面张力通常远低于普通油/水界面张力。微米到毫米大小的颗粒往往不会通过液/液界面，而倾向于被困在那里。在本研究中，通过显微镜观察，研究了m大小的铁磁和顺磁颗粒通过ATPS界面的情况。在磁场作用下，铁磁粒子在ATPS界面处聚集。Mn2+吸附的阳离子交换树脂颗粒不是铁磁性的，而是顺磁性的，并且它们不聚集。单个Mn2+吸附颗粒被向下的磁力从界面上拉下来，然后释放出来。根据实验结果计算或估计了粒子所受的力，即引力、浮力、磁力和界面张力所产生的力。本方法是开发一种利用液/液界面分离m级颗粒的方法的基础研究。

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

Solvent Extraction Research and Development, Japan 工程技术-工程：化工

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

1 months

期刊介绍： Solvent Extraction Research and Development, Japan (Solvent Extr. Res. Dev., Jpn.) is a periodical issued from Japan Association of Solvent Extraction (JASE) containing papers dealing with all aspects of solvent extraction and their related methods, underlying principles, and materials. Original articles, notes, technical reports, and critical reviews will be considered for publication. Original articles must be of reasonably broad scope and significance to the solvent extraction. Notes will originally describe novel work of a limited nature or especially significant work in progress. Authors can contribute some information of novel techniques, equipment or apparatus, reagents and diluents for solvent extraction as technical reports. Critical reviews will be received from the authors to whom the editorial committee asked to contribute.