期刊
JOURNAL OF MEMBRANE SCIENCE
卷 514, 期 -, 页码 659-670出版社
ELSEVIER
DOI: 10.1016/j.memsci.2016.04.018
关键词
Fouling propensity; Oil emulsion; Microfiltration; Threshold flux; Zeta potential
资金
- Pall Corporation
- National Science Foundation (NSF) Center for Layered Polymeric Systems [DMR-0423914]
- NSF Grant [CBET 1160069]
- International Institute for Carbon Neutral Energy Research, Kyushu University (WPI-I2CNER) - Japanese Ministry of Education, Culture, Sports, Science and Technology
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1160069] Funding Source: National Science Foundation
Laboratory membrane fouling studies are often performed with a single foulant. However, studies comparing the behavior of different foulants using a single membrane are rarely reported. In this study, a poly(vinylidene fluoride) (PVDF) microfiltration membrane was challenged with a series of aqueous based model fouling media, including a suspension of latex beads, as well as soybean, motor and crude oil emulsions, in constant permeate flux fouling experiments. The critical and threshold fluxes were determined for each membrane-foulant pair. Constant permeate flux crossflow fouling experiments were performed at both low and high fluxes. A direct comparison of the fouling propensity of the PVDF membrane to the four fouling media was made. The fouling propensity was evaluated based on threshold flux values and the extent of transmembrane pressure (TMP) increase during constant permeate flux fouling experiments. In this study, the zeta potential of various fouling media correlated with their fouling propensities. The higher the zeta potential, the lower the fouling propensity. The fouling propensity followed the order of: latex beads < soybean oil < crude oil < motor oil. A three-stage TMP profile was observed with high fouling media, such as motor and crude oil emulsions. The TMP increased slowly in the early stage, then increased abruptly, and eventually reached a new pseudo-steady state TMP. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据