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Predicting the penetration behavior of colloidal foulants into membrane pore channels using A collision-attachment-based particle capture model

文献类型： 外文期刊

作者： Fu, Wei 1 ; Zhou, Yangfan 1 ; Guo, Hao 2 ; Liu, Bingzhi 1 ; Liu, Junxia 1 ; Huang, Weiwei 3 ; Yang, Haiyan 4 ; Tang, Chuyang Y. 5 ;

作者机构： 1.Guangdong Univ Technol, Sch Civil & Transportat Engn, Guangzhou 510006, Peoples R China

2.Tsinghua Univ, Inst Environm & Ecol, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China

3.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China

4.South China Normal Univ, Sch Environm, Guangzhou 510006, Peoples R China

5.Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China

关键词： Particle capture; Collision attachment; Energy barrier; Pore size; Membrane thickness

期刊名称：JOURNAL OF MEMBRANE SCIENCE （ 影响因子：9.0； 五年影响因子：8.8 ）

ISSN： 0376-7388

年卷期： 2025 年 723 卷

页码：

收录情况： SCI

摘要： We present a novel particle capture model based on a collision-attachment concept to predict the penetration behavior of colloidal foulants into membrane pore channels during microfiltration/ultrafiltration processes. This approach conceptualizes fouling as the result of colloidal particles colliding with and attaching to the walls of the membrane pores. Our model predictions align closely with experimental results, effectively capturing the dynamics of flux decline under different applied pressures. Modelling results highlight the critical roles of foulantpore wall energy barrier, membrane pore size, and membrane thickness in shaping foulant deposition patterns. A lower energy barrier increases the probability of particle capture near the entrance of the membrane pores. In contrast, a higher barrier reduces the attachment probability, allowing foulants to penetrate deeper into the pores and diminishing their overall deposition amount. A smaller pore size enhances the collision frequency of particles with pore walls, while a thicker membrane increases the likelihood of foulants adhesion to the pore walls due to the extended residence time within the pores. These insights into particles capture dynamics within membrane pores offer valuable implications for membrane design and optimization processes in water and wastewater treatment.

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