恒通量横流超滤全覆盖结垢模型及实验验证

IF 8.4 1区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Membrane Science Pub Date : 2025-04-27 DOI:10.1016/j.memsci.2025.124132

Yu-Heng Cheng , Alon Y. Kirschner , Jun Jie Wu , Mostafa Nassr , William A. Sullivan , Donald R. Paul , Lynn E. Katz , Robert W. Field , Benny D. Freeman

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引用次数: 0

摘要

提出了一种描述恒通量横流超滤污染的完全覆盖模型。采用稀乳胶珠悬浮液和商用聚醚砜平板超滤膜进行恒通量横流污染实验，研究操作条件对跨膜压力（ΔP， TMP）随时间演变的影响。在高乳胶珠浓度下（即高于25ppm），由于膜表面被乳胶珠覆盖，渗透通量或交叉流速的变化对标准化TMP谱的影响很小。在低浓度（即低于25ppm）下，渗透通量或污染物浓度的增加归一化后增加ΔP。然而，随着渗透通量或污染物浓度的增加，当渗透通量/浓度高到足以压倒由于横流而产生的颗粒去除时，归一化ΔP的增加就会减少。这些结果与新建立的完全覆盖模型吻合较好，该模型较好地描述了运行参数对结垢的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Complete coverage fouling model for constant flux crossflow ultrafiltration and experimental validation

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Complete coverage fouling model for constant flux crossflow ultrafiltration and experimental validation

A complete coverage model is proposed to describe fouling in constant flux crossflow ultrafiltration. Constant flux crossflow fouling experiments were conducted using dilute latex bead suspensions and commercial poly(ether sulfone) flat sheet ultrafiltration membranes to investigate the influence of operating conditions on evolution of transmembrane pressure (ΔP, TMP) with time. Changes in permeate flux or crossflow rate had little influence on the normalized TMP profile at high latex bead concentration (i.e., above 25 ppm) because the membrane surface was covered with latex beads. At low concentration (i.e., below 25 ppm), increases in permeate flux or foulant concentration increased normalized ΔP. However, this increase in normalized ΔP with permeate flux or foulant concentration diminishes when the permeate flux/concentration is high enough to overwhelm particle removal due to crossflow. These results are in good agreement with the new complete coverage model which describes the influence of operating parameters on fouling better than the previous model.

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来源期刊

Journal of Membrane Science 工程技术-高分子科学

CiteScore

17.10

自引率

17.90%

发文量

1031

审稿时长

2.5 months

期刊介绍： The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.