Sequential separation of oil-in-water emulsions using integrated hydrophilic and Janus membrane modules

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-11-16 DOI:10.1016/j.seppur.2024.130552

Rui Zhu, Hao-Nan Li, Xu-Yu Xia, Xin-Yu Guo, Xiao-Jun Huang, Chao Zhang, Hong-Qing Liang, Hao-Cheng Yang, Zhi-Kang Xu

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Abstract

Membrane technologies are extensively employed for the separation of surfactant-stabilized oil/water emulsions due to their high efficiency and selectivity. Either membrane filtration or demulsification experiences performance reduction due to the monotonous increase or decrease in emulsion concentration over time. In this study, we have developed a dual-membrane module that integrates a hydrophilic hollow fiber membrane module with a Janus hollow fiber membrane module. This synergistic approach effectively overcomes the limitations of individual filtration and demulsification processes by dynamically adjusting emulsion concentration within the system. Compared to single-membrane modules, the recoveries of both water and oil increased by 27 % and 280 %, respectively. Additionally, the water content in the permeate oil is less than 0.03 %, and the total organic carbon in the permeate water is less than 12 ppm. Furthermore, this design allows for the concurrent recovery of oil and water from emulsions, offering a promising approach to achieving zero liquid discharge.

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利用集成亲水膜和 Janus 膜组件顺序分离水包油型乳液

膜技术因其高效率和高选择性而被广泛用于分离表面活性剂稳定的油/水乳液。无论是膜过滤还是反乳化，都会因为乳液浓度随时间的单调增加或减少而导致性能下降。在这项研究中，我们开发了一种双膜组件，将亲水性中空纤维膜组件与 Janus 中空纤维膜组件集成在一起。这种协同方法通过动态调节系统内的乳化液浓度，有效克服了单独过滤和破乳化过程的局限性。与单个膜组件相比，水和油的回收率分别提高了 27% 和 280%。此外，渗透油中的含水量小于 0.03%，渗透水中的总有机碳小于 12 ppm。此外，这种设计还能同时从乳状液中回收油和水，为实现液体零排放提供了一种可行的方法。

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

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.