Development of a sulfated Y-doped nonstoichiometric zirconia/polysulfone composite membrane for treatment of wastewater containing oil

Zhang, Yuqing, Cui, Ping, Du, Tingdong, Shan, Libo and Wang, Yueling (2009) Development of a sulfated Y-doped nonstoichiometric zirconia/polysulfone composite membrane for treatment of wastewater containing oil. Separation and Purification Technology, 70 2: 153-159. doi:10.1016/j.seppur.2009.09.010


Author Zhang, Yuqing
Cui, Ping
Du, Tingdong
Shan, Libo
Wang, Yueling
Title Development of a sulfated Y-doped nonstoichiometric zirconia/polysulfone composite membrane for treatment of wastewater containing oil
Journal name Separation and Purification Technology   Check publisher's open access policy
ISSN 1383-5866
1873-3794
Publication date 2009-12-10
Sub-type Article (original research)
DOI 10.1016/j.seppur.2009.09.010
Volume 70
Issue 2
Start page 153
End page 159
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract Polysulfone (PSF) is a kind of popular membrane material for treatment of wastewater containing oil, for it is easily fabricated into ultrafiltration membrane or composite membrane. When treated with wastewater, it has a tendency to be contaminated for its hydrophobicity. In order to enhance the hydrophilic and anti-fouling property of membrane, we added sulfated Y-doped nonstoichiometric zirconia (SO42−/ZrO2–Y2O3; SZY particles) to polysulfone and prepared a novel organic–inorganic composite membrane (SZY/PSF) by a sol–gel process. The optimum preparation conditions of composite membranes were: the ratio of solid (polysulfone and SZY particles), solvent and porogen (polyethylene glycol 400) was 1(g):5(mL):0.8(mL); the mass ratio of SZY particles to polysulfone was 15%; the evaporating time was 10 s and the coagulation bath temperature was 20 °C; intermittent ultrasound was on during the preparation process. Composite membranes were characterized by test of tensile strength, contact angel, porosity and pore diameter and scanning electron microscope (SEM). The results show that composite membrane is difficult to be compacted and approaches twice tensile strength of pure polysulfone membrane; contact angel reduces from 78.1° to 36.6°. SEM micrographs indicate that composite membrane owning the asymmetry structure has two layers of compact layer and porous layer with SZY particles uniformly dispersed in PSF. Wastewater containing oil (80 mg/L) was used to investigate the separation performance of composite membrane. The results reveal that oil retention is 99.16% and oil concentration in the permeation is 0.67 mg/L, which meet the requirement for discharge (<10 mg/L). It can be concluded that the composite membranes developed in the study are reasonably resistant to fouling and hence the developed PSF membranes are considered feasible in treating wastewater containing oil.
Keyword Composite membrane
Sulfated
Y-doped nonstoichiometric zirconia
Polysulfone
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Engineering Publications
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Sun, 27 Dec 2009, 00:00:18 EST