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

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

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.

Development and Characterization of a Portable Atmospheric-Pressure Argon Plasma Jet for Sterilization

2015 ◽  
Author(s):  
Zhi-Hua Lin ◽  
Jong-Shinn Wu ◽  
Chen-Yon Tobias Tschang ◽  
Chi-Feng Su ◽  
Tuoh Wu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Gas Temperature ◽  
E Coli ◽  
Bacteria Inactivation ◽  
Argon Plasma Jet ◽  
Absorption Power

In this study, we would like to develop a portable round argon atmospheric-pressure plasma jet (APPJ) which can be applied for general use of bacteria inactivation. The APPJ was characterized electrically and optically, which include measurements of absorption power, gas temperature and optical properties of plasma generated species. Measured OH* number density at 5 mm downstream was estimated to be 5.8 × 1015 cm−3 and the electron density and electron temperature were estimated to be 2.4 × 1015 cm−3 and 0.34 eV, respectively, in the discharge region. This APPJ was demonstrated to effectively inactivate E. coli within seconds of treatment, which shows its great potential in the future use of general bacteria inactivation and sterilization.

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.

Structural characterization of sputtered PMMA in argon plasma

2005 ◽  
Vol 59 (23) ◽  
pp. 2903-2907 ◽  
Author(s):  
Dhananjay S. Bodas ◽  
S.A. Gangal
Keyword(s):  
Structural Characterization ◽  
Argon Plasma

Characterization of a low-pressure argon plasma using optical emission spectroscopy and a global model

2007 ◽  
Vol 101 (5) ◽  
pp. 053306 ◽  
Author(s):  
A. Palmero ◽  
E. D. van Hattum ◽  
H. Rudolph ◽  
F. H. P. M. Habraken
Keyword(s):  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Argon Plasma ◽  
Optical Emission ◽  
Low Pressure ◽  
Global Model
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