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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精细化工全国重点实验室主任，教育部智能材料化工前沿科学中心执行主任，大连理工大学膜科学与技术研究开发中心主任
性别：女
毕业院校：中国科学院大连化物所
学位：博士
所在单位：化工学院
学科：化学工程. 膜科学与技术. 生物医学工程
联系方式：hgaohong@dlut.edu.cn
电子邮箱：hgaohong@dlut.edu.cn
Modeling and simulation of mitigating membrane fouling under a baffle-filled turbulent flow with permeate boundary
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论文类型：期刊论文
发表时间：2017-05-31
发表刊物：SEPARATION AND PURIFICATION TECHNOLOGY
收录刊物：SCIE、EI
卷号：179
页面范围：13-24
ISSN号：1383-5866
关键字：Crossflow microfiltration; Membrane fouling; Turbulence promoter; Deposition process; Computational fluid dynamics
摘要：Mitigating membrane fouling by using turbulence promoters (TP) is an important issue in the microfiltration field. Considering the particles accumulation on the walls of permeable membrane tubes (one kind of fouling mechanism) with TP, we proposed a three-dimensional numerical model for random decision that decides particle movement on the membrane boundary. We investigated and predicted the permeate flux, fouling layer thickness and optimal TP arrangement modes with different operational parameters with this model. The dynamics process of cake deposition was precisely quantified and visualized. And then the simulated results ignored of pore blockage for the permeation flux were deviated less than 10% compared with the experimental data in literatures. After TP condition being optimized, the mass transfer resistance sharply reduced. Average thickness of the cake layer decreased from 0.318 mm to 0.026 mm, and the permeate flux increased more than 60%. (C) 2017 Elsevier B.V. All rights reserved.