Coalescence and Separation Properties of Fine Oil Droplets by Lipophilic Nanofiber Membrane

Q4 Materials Science
Y. Mukai, Motoki Hara
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引用次数: 3

Abstract

A coalescer is a useful device for removing oil from oil-in-water (O/W) emulsion, but it is unsuitable for the coalescence of fine oil droplets less than 10 μm. In this study, a nanofiber membrane was applied as a fibrous layer equipped in the coalescer to coalesce the fine oil droplets less than 10 μm, and the lipophilic polypropylene nanofiber membrane was selected in consideration of an affinity for oil. The O/W emulsion including the fine oil droplets was permeated through the membrane for evaluating the coalescence properties of fine oil droplets. In the initial stage of permeation, the oil droplets were strongly attracted to the lipophilic surface of nanofibers, and a thin oil film was formed on the entire fiber surface. Subsequent oil droplets were incorporated into the oil film, resulting in the growth of the oil film. When the fibers could no longer hold fully grown oil film, excess oil film was finally released from the outlet of the membrane. The released oil pieces floated and formed an oil layer on the surface of permeated fluid. In the steady state, the separation ratio of 83.3 % was observed under low pressure loss of 17 kPa. The size distribution data of droplets in the permeated fluid clearly demonstrated that the polypropylene nanofiber membrane used in this study could completely coalesce and separate the fine oil droplets of 2 to 10 μm.
亲脂性纳米纤维膜微油滴的聚结与分离性能
聚结剂是一种有效的脱油装置,但不适用于10 μm以下的细油滴的聚结。本研究采用纳米纤维膜作为纤维层配置在聚聚器中,用于聚聚小于10 μm的细油滴,考虑到对油的亲和性,选择亲脂性聚丙烯纳米纤维膜。将含细油滴的油水乳状液通过膜渗透,评价细油滴的聚并性能。在渗透初期,油滴被纳米纤维的亲脂性表面强烈吸引,在整个纤维表面形成一层薄薄的油膜。随后的油滴被吸收到油膜中,导致油膜的生长。当纤维不能再保持完全生长的油膜时,多余的油膜最终从膜的出口释放出来。释放出来的油块漂浮在渗透流体表面形成油层。在稳定状态下,低压损失为17 kPa,分离率为83.3%。渗透流体中液滴的尺寸分布数据清楚地表明,本研究使用的聚丙烯纳米纤维膜可以完全凝聚并分离2 ~ 10 μm的细油滴。
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 Textile Engineering
Journal of Textile Engineering Materials Science-Materials Science (all)
CiteScore
0.70
自引率
0.00%
发文量
4
期刊介绍: Journal of Textile Engineering (JTE) is a peer-reviewed, bimonthly journal in English and Japanese that includes articles related to science and technology in the textile and textile machinery fields. It publishes research works with originality in textile fields and receives high reputation for contributing to the advancement of textile science and also to the innovation of textile technology.
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