Preparation and characterization of modified nano-porous PVDF membrane with high antifouling property using UV photo-grafting

2009 ◽  
Vol 255 (16) ◽  
pp. 7455-7461 ◽  
Author(s):  
A. Rahimpour ◽  
S.S. Madaeni ◽  
S. Zereshki ◽  
Y. Mansourpanah
Keyword(s):  
Pvdf Membrane ◽  
Antifouling Property

Preparation and characterization of modified PVDF membrane induced by argon plasma with enhanced antifouling property

2017 ◽  
Vol 64 ◽  
pp. 72-80 ◽  
Author(s):  
Azadeh Ghaee ◽  
Behrouz Sadatnia ◽  
Mohammad Khosravi ◽  
Zahra Mansourpour ◽  
Ali Ghadimi
Keyword(s):  
Argon Plasma ◽  
Pvdf Membrane ◽  
Antifouling Property

Preparation and characterization of nano-chitin whisker reinforced PVDF membrane with excellent antifouling property

2015 ◽  
Vol 480 ◽  
pp. 1-10 ◽  
Author(s):  
Aiwen Qin ◽  
Xiang Li ◽  
Xinzhen Zhao ◽  
Dapeng Liu ◽  
Chunju He
Keyword(s):  
Pvdf Membrane ◽  
Antifouling Property

scholarly journals Characterization of the Initial Fouling Layer on the Membrane Surface in a Membrane Bioreactor: Effects of Permeation Drag

Membranes ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 121
Author(s):  
Shengli Wang ◽  
Xin Lu ◽  
Lanhe Zhang ◽  
Jingbo Guo ◽  
Haifeng Zhang
Keyword(s):  
Zeta Potential ◽  
Electron Donor ◽  
Energy Barrier ◽  
Polyvinylidene Fluoride ◽  
Membrane Bioreactor ◽  
Membrane Surface ◽  
Permeate Flux ◽  
Pvdf Membrane ◽  
Operating Modes

In this study, the properties of the initial fouling layer on the membrane surface of a bioreactor were investigated under different operating modes (with or without permeate flux) to improve the understanding of the effect of permeation drag on the formation of the initial fouling layer. It was found that protein was the major component in the two types of initial fouling layers, and that the permeation drag enhanced the tryptophan protein-like substances. The attraction of the initial foulants to the polyvinylidene fluoride (PVDF) membrane was ascribed to the high zeta potential and electron donor component (γ−) of the membrane. Thermodynamic analyses showed that the permeation drag-induced fouling layer possessed high hydrophobicity and low γ−. Due to permeation drag, a portion of the foulants overcame an energy barrier before they contacted the membrane surface, which itself possessed a higher fouling propensity. A declining trend of the cohesive strength among the foulants was found with the increasing development of both fouling layers.

Preparation and Characterization of Hydrophilic PVDF Membrane via Graft Modification by Maleic Anhydride

2011 ◽  
Vol 295-297 ◽  
pp. 286-291
Author(s):  
Li Guo Wang ◽  
Xiao Guang Zhang ◽  
Shu Fang Hou ◽  
Xiu Ju Wang ◽  
Ai Min Wang ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Polyvinylidene Fluoride ◽  
Pure Water ◽  
Water Flux ◽  
Pvdf Membrane ◽  
Technical Parameters ◽  
Pure Water Flux ◽  
Flat Membranes ◽  
Better Than

Hydrophilic polyvinylidene fluoride (PVDF) flat ultrafiltration membranes were prepared by wet-spinning method. The effects of technical parameters of maleic anhydride grafted onto PVDF on the performance of hydrophilic PVDF membranes were investigated, the preparation technical parameters were determined, and the hydrophilic PVDF flat membranes were prepared. Then, hydrophilic PVDF membranes were characterized in terms of pure water flux, contact angle, infrared spectroscopic analysis and scanning electron microscope(SEM). The results showed that maleic anhydride had been grafted onto PVDF, and the hydrophilic performance of the modified membrane was better than the traditional one.

Tuning the antifouling property of PVDF ultrafiltration membrane with surface anchored polyelectrolyte complexes for sewage treatment

RSC Advances ◽  
2015 ◽  
Vol 5 (78) ◽  
pp. 63580-63587 ◽  
Author(s):  
Xinzhen Zhao ◽  
Aiwen Qin ◽  
Dapeng Liu ◽  
Chunju He
Keyword(s):  
Polyelectrolyte Complex ◽  
Sewage Treatment ◽  
Ultrafiltration Membrane ◽  
Polyelectrolyte Complexes ◽  
Pvdf Membrane ◽  
Antifouling Property

Surface anchored polyelectrolyte complex significantly improved the antifouling performance of PVDF membrane.

Preparation and characterization of a PVDF/EG-POSS hybrid ultrafiltration membrane for anti-fouling improvement

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40753-40763 ◽  
Author(s):  
Junfen Sun ◽  
Lishun Wu ◽  
Fang Hu
Keyword(s):  
Ethylene Glycol ◽  
Ultrafiltration Membrane ◽  
Pvdf Membrane ◽  
Pure Pvdf

The octa vinyl silsesquioxane (OvPOSS) was used to synthesis POSS grafted ethylene glycol (EG) (EG-POSS). The hydrophilicity and anitifouling property of pure PVDF membrane was improved by incorporating EG-POSS in PVDF membrane.

scholarly journals Fabrication and Characterization of Nanofibers Membranes using Electrospinning Technology for Oil Removal

2021 ◽  
Vol 18 (4) ◽  
pp. 1338
Author(s):  
Amer Naji Al-Naemi ◽  
Mohammed Amer Abdul-Majeed ◽  
Mustafa H. Al-Furaiji ◽  
Inmar N Ghazi
Keyword(s):  
Polyvinylidene Fluoride ◽  
Membrane Surface ◽  
Water Flux ◽  
Oil Removal ◽  
Nanofiber Membrane ◽  
Pvdf Membrane ◽  
Electrospinning Method ◽  
Average Water ◽  
Graphene Membranes

Oily wastewater is one of the most challenging streams to deal with especially if the oil exists in emulsified form. In this study, electrospinning method was used to prepare nanofiberous polyvinylidene fluoride (PVDF) membranes and study their performance in oil removal. Graphene particles were embedded in the electrospun PVDF membrane to enhance the efficiency of the membranes. The prepared membranes were characterized using a scanning electron microscopy (SEM) to verify the graphene stabilization on the surface of the membrane homogeneously; while FTIR was used to detect the functional groups on the membrane surface. The membrane wettability was assessed by measuring the contact angle. The PVDF and PVDF / Graphene membranes efficiency was tested in separation of emulsified oil from aqueous solutions. The results showed that PVDF-Graphene nanofiber membrane exhibited better performance than the plain PVDF nanofiber membrane with average water flux of 210 and 180 L.m-2.h-1, respectively. Both membranes showed high oil rejection with more than 98%.

Sign in / Sign up

Export Citation Format

Share Document