In the present study, nano-sized TiO2/Al2O3 modified polyvinylidene fluoride (PVDF) membranes (MM) were fabricated and then utilized for oil/water emulsion separation. The results showed that, compared with PVDF membrane (OM), the contact angle of MM decreased and hydrophilicity increased. The ultrafiltration (UF) of oil in water emulsions with transmembrane pressure (TMP) increasing results in a sharp fall in relative flux with time. The cake filtration models did not always predict the performance over the complete range of filtration times very well. In the initial 30 min, all the four cake models can simulate this UF process to a certain extent, and the suitability was: cake filtration > intermediate pore blocking > standard pore blocking > complete pore blocking models. However, they were no longer adapted well with UF time extent to 60 min, but only cake filtration (R2 = 0.9535) maintained a high adaptability. Surface and cross-sectional morphology of the membrane was investigated by SEM to make an advanced certificate of this UF mechanism.
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Research Article|
February 01 2013
Separation of oil/water emulsion using nano-particle (TiO2/Al2O3) modified PVDF ultrafiltration membranes and evaluation of fouling mechanism
X. S. Yi;
X. S. Yi
1State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, China
2State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China
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S. L. Yu;
1State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, China
E-mail: yushuili.cn@gmail.com
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W. X. Shi;
W. X. Shi
2State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China
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S. Wang;
S. Wang
2State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China
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L. M. Jin;
L. M. Jin
2State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China
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N. Sun;
N. Sun
2State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China
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C. Ma;
C. Ma
2State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China
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L. P. Sun
L. P. Sun
3Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Institute of Urban Construction, Tianjin, China
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Water Sci Technol (2013) 67 (3): 477–484.
Article history
Received:
April 20 2012
Accepted:
August 22 2012
Citation
X. S. Yi, S. L. Yu, W. X. Shi, S. Wang, L. M. Jin, N. Sun, C. Ma, L. P. Sun; Separation of oil/water emulsion using nano-particle (TiO2/Al2O3) modified PVDF ultrafiltration membranes and evaluation of fouling mechanism. Water Sci Technol 1 February 2013; 67 (3): 477–484. doi: https://doi.org/10.2166/wst.2012.565
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