膜科学与技术

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Hydrophobic Membrane, Hydrophobic Performance Evaluation and Spontaneous

Dehydration Drying

Authors： LU Xiaolong,GU Jie

Units： 1 State Key Laboratory of Membrane Materials and Membrane Applications, Tianjin Motimo Membrane Technology Co., Ltd., Tianjin 300457, PR China;2 State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China

KeyWords： Hydrophobic membrane, Critical wetting value, Liquid entry pressure, Drying of hydrophobic membrane, Spontaneous dehydration

ClassificationCode：TQ028

year,volume(issue):pagination： 2024,44(1):1-7

Abstract：

This article introduces the definition of porous hydrophobic membranes, the concept of critical wetting value, the permeability pressure value of hydrophobic membranes, and the testing method of critical wetting value. Different from the usual methods such as external heating, this article introduces two methods of self dehydration and drying of hydrophobic membranes by utilizing the inherent characteristics of hydrophobic membrane materials. One method is to control the wetting process of membrane fouling. When the depth of membrane pores being wetted is less than the critical wetting value of the hydrophobic membrane material, membrane cleaning is used to achieve spontaneous dehydration and drying of the hydrophobic membrane. Another method is to construct a hydrophilic and hydrophobic bilayer composite hydrophobic membrane. When the membrane runs until the conductivity of the produced water increases significantly, it is shut down for cleaning. By utilizing the characteristic that the adhesion between hydrophilic materials and water is greater than that between hydrophobic materials and water, the hydrophobic membrane pores are spontaneously dehydrated and dried.

Funds：

基金项目：天津市高等学校新型膜材料及膜分离技术创新团队(No. TD13-5044)；国家自然科学基金（21176188）

AuthorIntro：

吕晓龙(1964-),男，山西忻州人，教授，研究方向为分离膜制备与应用。E-mail：13920286131@163.com

Reference：

[1] A. Alkhudhiri, N. Darwish, N. Hilal, Membrane distillation: A comprehensive review[J]. Desalination, 2012, 287:2-18.

[2] H. Chamani, J. Woloszyn, T. Matsuura, et al. Pore wetting in membrane distillation: A comprehensive review[J]. Prog. Mater Sci, 2021, 122:100843.

[3] D. Bhaumik, S. Majumdar, Q. Fan, et al. Hollow fiber membrane degassing in ultrapure water and micro-biocontamination[J]. J Membr. Sci, 2004, 235(1/2):31-41.

[4] M. Zhao, Y. Liu, J. Zhang, et al. Janus ceramic membranes with asymmetric wettability for high-efficient microbubble aeration[J]. J Membr. Sci, 2023, 671:121418.

[5] F. Zhou, H.N. Tien, W.L. Xu, et al. Ultrathin graphene oxide-based hollow fiber membranes with brush-like CO(2)-philic agent for highly efficient CO(2) capture[J]. Nat Commun, 2017, 8(1).

[6] P. Xu, M. Qiu, K. Fu, et al. Enhancing performance of ceramic membrane in CO2 membrane absorption: Single-to multi-channel[J]. J Membr. Sci, 2023, 687:122013.

[7] 中华人民共和国国家市场监督管理总局. GB/T 42270-2022, 多孔疏水膜的疏水性能测试方法[S]. 北京: 中国标准出版社, 2023.

[8] R.B. Saffarini, B. Mansoor, R. Thomas, et al. Effect of temperature-dependent microstructure evolution on pore wetting in PTFE membranes under membrane distillation conditions[J]. J Membr. Sci, 2013, 429:282-294.

[9] A. Samadi, T. Ni, E. Fontananova, et al. Engineering antiwetting hydrophobic surfaces for membrane distillation: A review[J]. Desalination, 2023, 563.

[10] M. Rezaei, D.M. Warsinger, V.J. Lienhard, et al. Wetting phenomena in membrane distillation: Mechanisms, reversal, and prevention[J]. Water Res, 2018, 139:329-352.

[11] M.C. Garcia-Payo, M.A. Izquierdo-Gil, C. Fernandez-Pineda, Wetting Study of Hydrophobic Membranes via Liquid Entry Pressure Measurements with Aqueous Alcohol Solutions[J]. J Colloid Interface Sci, 2000, 230(2):420-431.

[12] A.G. Fane, R. Wang, M.X. Hu, Synthetic membranes for water purification: status and future[J]. Angew. Chem. Int. Ed. Engl, 2015, 54(11):3368-3386.

[13] 吕晓龙. 疏水膜的污染、润湿与干燥探讨[J]. 膜科学与技术, 2020, 40(1):196-203.

[14] W. Zhou, Y. Chen, X. He, et al. Mechanistic insights to the reversibility of membrane wetting in membrane distillation[J]. J Membr. Sci, 2023, 685:121958.

[15] D. M. Warsinger, A. Servi, G. B. Connors, et al. Reversing membrane wetting in membrane distillation: comparing dry-out to backwashing with pressurized air[J]. Environmental Science: Water Research & Technology, 2017, 3(5):930-939.

[16] 袁娅，PVDF疏水膜润湿进程控制[D], 天津: 天津工业大学, 2017.

[17] 程认认，吕晓龙*，武春瑞,等. 疏水膜材料的膜孔润湿与干燥研究[J]. 功能材料, 2015, 46(22),22108-22112.

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