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

2013 ◽  
Vol 67 (3) ◽  
pp. 477-484 ◽  
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.

A facile surface modification of a PVDF membrane via CaCO3 mineralization for efficient oil/water emulsion separation

2020 ◽  
Vol 44 (48) ◽  
pp. 20999-21006
Author(s):  
Junda Wu ◽  
Atian Xie ◽  
Jin Yang ◽  
Jiangdong Dai ◽  
Chunxiang Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Layer By Layer ◽  
Assembly Process ◽  
Water Separation ◽  
Water Emulsion ◽  
Pvdf Membrane ◽  
Inorganic Particles ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water

A facile modification of a PVDF membrane using CaCO3 inorganic particles via a layer-by-layer self-assembly process for efficient oil/water separation.

Janus membrane decorated via a versatile immersion-spray route: controllable stabilized oil/water emulsion separation satisfying industrial emission and purification criteria

2019 ◽  
Vol 7 (9) ◽  
pp. 4941-4949 ◽  
Author(s):  
Weifeng Zhang ◽  
Xiangyu Li ◽  
Ruixiang Qu ◽  
Yanan Liu ◽  
Yen Wei ◽  
...  
Keyword(s):  
Water Emulsion ◽  
Industrial Emission ◽  
Oil Emulsion ◽  
Highly Efficient ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water ◽  
Water In Oil Emulsion

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.

Switchable superlyophobic zeolitic imidazolate framework-8 film-coated stainless-steel meshes for selective oil–water emulsion separation with high flux

2020 ◽  
Vol 44 (32) ◽  
pp. 13534-13541
Author(s):  
Xin Gao ◽  
Qiang Ma ◽  
Zhengwei Jin ◽  
Pei Nian ◽  
Zheng Wang
Keyword(s):  
Stainless Steel ◽  
High Flux ◽  
Water Droplets ◽  
Oil Droplets ◽  
Zeolitic Imidazolate Framework ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water ◽  
Oil Emulsions

A switchable superlyophobic ZIF-8 membrane can selectively remove oil droplets in oil-in-water emulsions via superoleophobicity and water droplets in water-in-oil emulsions via superhydrophobicity.

Mussel-inspired modification of a polymer membrane for ultra-high water permeability and oil-in-water emulsion separation

2014 ◽  
Vol 2 (26) ◽  
pp. 10225-10230 ◽  
Author(s):  
Hao-Cheng Yang ◽  
Kun-Jian Liao ◽  
He Huang ◽  
Qing-Yun Wu ◽  
Ling-Shu Wan ◽  
...  
Keyword(s):  
Water Permeability ◽  
Atmospheric Pressure ◽  
High Water ◽  
Polymer Membrane ◽  
Water Emulsion ◽  
Surface Hydrophilicity ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

Polydopamine/polyethyleneimine-decorated membranes were fabricated with excellent surface hydrophilicity and high water permeability for oil/water emulsion separation under atmospheric pressure.

Hierarchical rough surfaces formed by LBL self-assembly for oil–water separation

2014 ◽  
Vol 2 (30) ◽  
pp. 11830-11838 ◽  
Author(s):  
Xiaoyu Li ◽  
Dan Hu ◽  
Kun Huang ◽  
Chuanfang Yang
Keyword(s):  
Stainless Steel ◽  
Removal Efficiency ◽  
Self Assembly ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

Stainless steel felt modified with hierarchically structured coatings and hydrophobicity can achieve a removal efficiency of greater than 99% for oil-in-water emulsion separation.

scholarly journals Development of Polyvinylidene Fluoride Membrane via Assembly of Tannic Acid and Polyvinylpyrrolidone for Filtration of Oil/Water Emulsion

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 976
Author(s):  
Normi Izati Mat Nawi ◽  
Syasya Ong Amat ◽  
Muhammad Roil Bilad ◽  
Nik Abdul Hadi Md Nordin ◽  
Norazanita Shamsuddin ◽  
...  
Keyword(s):  
Tannic Acid ◽  
Membrane Fouling ◽  
Polyvinylidene Fluoride ◽  
Ecological Impact ◽  
Mean Flow ◽  
Water Emulsion ◽  
Emulsion Separation ◽  
Oil Water ◽  
The Impact ◽  
Enhanced Surface

Wastewater containing oil/water emulsion has a serious ecological impact and threatens human health. The impact worsens as its volume increases. Oil/water emulsion needs to be treated before it is discharged or reused again for processing. A membrane-based process is considered attractive in effectively treating oil/water emulsion, but progress has been dampened by the membrane fouling issue. The objective of this study is to develop polyvinylidene fluoride (PVDF) membranes customized for oil/water emulsion separation by incorporating assembly of tannic acid (TA) and polyvinylpyrrolidone (PVP) in the polymer matrix. The results show that the assembly of TA/PVP complexation was achieved as observed from the change in colour during the phase inversion and as also proven from the characterization analyses. Incorporation of the TA/PVP assembly leads to enhanced surface hydrophilicity by lowering the contact angle from 82° to 47°. In situ assembly of the TA/PVP complex also leads to enhanced clean water permeability by a factor of four as a result of enhanced mean flow pore size from 0.2 to 0.9 µm. Owing to enhanced surface chemistry and structural advantages, the optimum hydrophilic PVDF/TA/PVP membrane poses permeability of 540.18 L/(m2 h bar) for oil/water emulsion filtration, three times higher than the pristine PVDF membrane used as the reference.

Superhydrophilic and underwater superoleophobic nanofibrous membrane with hierarchical structured skin for effective oil-in-water emulsion separation

2017 ◽  
Vol 5 (2) ◽  
pp. 497-502 ◽  
Author(s):  
Jianlong Ge ◽  
Jichao Zhang ◽  
Fei Wang ◽  
Zhaoling Li ◽  
Jianyong Yu ◽  
...  
Keyword(s):  
Nanofibrous Membrane ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

A superwettable nanofibrous membrane with hierarchical structured skin for effective oil/water emulsion separation was fabricated via a combination of electrospinning and electrospraying.

PVDF mixed matrix nano-filtration membranes integrated with 1D-PANI/TiO2 NFs for oil–water emulsion separation

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 18899-18908 ◽  
Author(s):  
K. Venkatesh ◽  
G. Arthanareeswaran ◽  
A. Chandra Bose
Keyword(s):  
Polyvinylidene Fluoride ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Water Emulsion ◽  
One Dimensional ◽  
Filtration Membranes ◽  
Emulsion Separation ◽  
Oil Water ◽  
Nano Filtration ◽  
Oily Waste

In this work, one dimensional (1D) PANI/TiO2 nanofibers (NFs) were incorporated into polyvinylidene fluoride (PVDF) Mixed Matrix Membranes (MMMs) for the removal of oil and water droplets from oily waste water.

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