Performance and membrane fouling of alumina UF membranes in treating nano-sized oil-water emulsions

Master thesis (2022)

Authors

H. LIU Civil Engineering & Geosciences

Contributors

Sebastiaan Heijman Sanitary Engineering - CEG (mentor)
L.C. Rietveld Water Management (graduation committee member)
R.E.F. Lindeboom Sanitary Engineering - CEG (graduation committee member)
G. Qin Sanitary Engineering - CEG (graduation committee member)
Faculty
Civil Engineering & Geosciences, Civil Engineering & Geosciences
Copyright: © 2022 HAO LIU
More Info
expand_more

Published Date

25-08-2022

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Civil Engineering & Geosciences

Abstract

Ultrafiltration (UF) is an efficient and effective method of filtrating oil-in-water (O/W) emulsions. However, the favorable conditions of filtrating nano-sized O/W emulsions have not been investigated. This study investigated the influence of four different parameters including membrane pore size, cross flow velocity, pH and salinity on membrane fouling as well as oil rejection. Alumina UF membranes were employed to filtrate nano-sized O/W emulsions. O/W emulsions were synthesized using soybean oil and stabilized by surfactants. The filtration experiments were conducted under constant flux for multi cycles. The results showed that 200nm was recommended to filtrate nano-sized O/W emulsions (average droplet size -100nm) based on the high oil rejection (95% ~ 99%) and low irreversible fouling resistance. Besides, alumina membranes were proved to be more effective in fouling mitigation at low salinity, high pH, and high cross flow velocities.

Files

Hao_s_thesis_report_01.pdf
- Embargo expired in 31-08-2024