Preparation of modified membrane of polyvinylidene fluoride (PVDF) and evaluation of anti-fouling features and high capability in water/oil emulsion separation

A PANI–SiNP-decorated Janus membrane was fabricated for highly efficient stabilized oil-in-water and water-in-oil emulsion separation, meeting industrial purification standards.

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Synthesis of a Novel Environmentally Friendly and Interfacially Active CNTs/SiO2 Demulsifier for W/O Crude Oil Emulsion Separation

Energy & Fuels ◽

10.1021/acs.energyfuels.9b01217 ◽

2019 ◽

Vol 33 (8) ◽

pp. 7166-7175 ◽

Cited By ~ 10

Author(s):

Zhiming Huang ◽

Ping Li ◽

Xiao Luo ◽

Xia Jiang ◽

Lei Liu ◽

...

Keyword(s):

Crude Oil ◽

Environmentally Friendly ◽

Oil Emulsion ◽

Emulsion Separation

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Eco-friendly separation layers based on waste peanut shell for gravity-driven water-in-oil emulsion separation

Journal of Cleaner Production ◽

10.1016/j.jclepro.2020.120184 ◽

2020 ◽

Vol 255 ◽

pp. 120184 ◽

Cited By ~ 2

Author(s):

Bowu Zhao ◽

Luyao Ren ◽

Yaobang Du ◽

Jianyou Wang

Keyword(s):

Peanut Shell ◽

Oil Emulsion ◽

Emulsion Separation ◽

Separation Layers ◽

Gravity Driven ◽

Water In Oil Emulsion

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Separation of oil/water emulsion using nano-particle (TiO2/Al2O3) modified PVDF ultrafiltration membranes and evaluation of fouling mechanism

Water Science & Technology ◽

10.2166/wst.2012.565 ◽

2013 ◽

Vol 67 (3) ◽

pp. 477-484 ◽

Cited By ~ 13

Author(s):

X. S. Yi ◽

S. L. Yu ◽

W. X. Shi ◽

S. Wang ◽

L. M. Jin ◽

...

Keyword(s):

Polyvinylidene Fluoride ◽

Transmembrane Pressure ◽

Cake Filtration ◽

Cross Sectional ◽

Water Emulsion ◽

Pvdf Membrane ◽

Pore Blocking ◽

Oil In Water ◽

Emulsion Separation ◽

Oil Water

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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Fabrication of a PPS Microporous Membrane for Efficient Water-in-Oil Emulsion Separation

Langmuir ◽

10.1021/acs.langmuir.8b02393 ◽

2018 ◽

Vol 34 (36) ◽

pp. 10580-10590 ◽

Cited By ~ 17

Author(s):

Chao Yang ◽

Na Han ◽

Weijing Wang ◽

Wenxin Zhang ◽

Changye Han ◽

...

Keyword(s):

Microporous Membrane ◽

Oil Emulsion ◽

Emulsion Separation ◽

Water In Oil Emulsion

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Superhydrophobic-superoleophilic SiC membranes with micro-nano hierarchical structures for high-efficient water-in-oil emulsion separation

Journal of Membrane Science ◽

10.1016/j.memsci.2020.117842 ◽

2020 ◽

Vol 601 ◽

pp. 117842 ◽

Cited By ~ 6

Author(s):

Yibin Wei ◽

Zixuan Xie ◽

Hong Qi

Keyword(s):

Hierarchical Structures ◽

Oil Emulsion ◽

High Efficient ◽

Emulsion Separation ◽

Water In Oil Emulsion

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Study of antifouling modified ultrafiltration membrane based on the secondary treated water of urban sewage

Water Science & Technology ◽

10.2166/wst.2012.380 ◽

2012 ◽

Vol 66 (10) ◽

pp. 2074-2082 ◽

Cited By ~ 3

Author(s):

Xiao-rong Meng ◽

Liang Zhao ◽

Lei Wang ◽

Xu-dong Wang ◽

Dan-xi Huang ◽

...

Keyword(s):

Polyvinylidene Fluoride ◽

Layer Structure ◽

Pure Water ◽

Water Flux ◽

Inversion Method ◽

Treated Water ◽

Urban Sewage ◽

Cake Layer ◽

Modified Membrane ◽

Section Structure

Mixtures of polyvinylidene fluoride (PVDF) and polyvinyl alcohol (PVA) containing hydrophilic ultrafiltration membranes were prepared by adding PVA (5 to 30%) to PVDF by the phase inversion method. The hydrophilic contact angle (CA), equilibrium water content, pure water flux and bovine serum albumin retention were studied to assess the membrane performance. The anti-fouling performance of modified membrane to the secondary treated water was evaluated by flux decline, washing recovery rate and fouling resistance analysis. Scanning electron microscopy showed that the cross-section structure of the membranes had finger-like pores, which were well developed and uniformly distributed, and the sub-layer structure was looser and more porous with the increasing content of PVA. The CA gradually decreased. The steady flux was 800 L/m2 h from P15 to P30, and the BSA retention sharply declined. The ultrafiltration tests for secondary treated water indicated that the main fouling source of the modified membrane was the concentration polarization and cake layer resistance. After physical flushing, the flux recovery ratio of the membrane could reach 100% when the PVA content was 5–15%, which shows excellent anti-pollution performance and good prospects for use in processing wastewater from urban sewage.

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