scholarly journals Reverse osmosis membrane modified by interfacial polymerization in non-polar heptane solvent assistance with acetone as a co-solvent

2015 ◽  
Author(s):  
A. S. Al-Hobaib ◽  
M. S. Alsuhybani ◽  
Kh. M. Al-Sheetan
Keyword(s):  
Reverse Osmosis ◽  
Interfacial Polymerization ◽  
Reverse Osmosis Membrane

scholarly journals Biguanidine functional chitooligosaccharide modified reverse osmosis membrane with improved anti-biofouling property

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 41938-41949 ◽  
Author(s):  
Huihui Wang ◽  
Yixuan Zhou ◽  
Yao Wang ◽  
Zhi Wang ◽  
Jixiao Wang
Keyword(s):  
Reverse Osmosis ◽  
Interfacial Polymerization ◽  
Antimicrobial Properties ◽  
Reverse Osmosis Membrane ◽  
Ro Membrane

The COSG-modified RO membrane with excellent anti-adhesive and antimicrobial properties was successfully fabricated by second interfacial polymerization.

scholarly journals Modification of poly(amide-urethane-imide) (PAUI) thin film composite reverse osmosis membrane with nano-silver particles

RSC Advances ◽  
2018 ◽  
Vol 8 (66) ◽  
pp. 37817-37827 ◽  
Author(s):  
Li-Fen Liu ◽  
Hao Wu ◽  
Rui-Han Li ◽  
Chun-yang Yu ◽  
Xue-Ting Zhao ◽  
...  
Keyword(s):  
Thin Film ◽  
Reverse Osmosis ◽  
Composite Membrane ◽  
Interfacial Polymerization ◽  
Reverse Osmosis Membrane ◽  
Silver Particles ◽  
Film Composite ◽  
Nano Silver ◽  
Thin Film Composite

A novel reverse osmosis (RO) composite membrane, poly(amide-urethane-imide@Ag) (PAUI@Ag), was prepared on a polysulfone supporting film through two-step interfacial polymerization.

Cellulose Acetate Reverse Osmosis Membrane Structure

1972 ◽  
Vol 30 ◽  
pp. 528-529
Author(s):  
H. K. Plummer ◽  
E. Eichen ◽  
C. D. Melvin
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Membrane Structure ◽  
Freeze Drying ◽  
Dense Layer ◽  
Water Removal ◽  
Reverse Osmosis Membrane ◽  
Correct Interpretation ◽  
Electron Image ◽  
Scanning Electron

Much of the work reported in the literature on cellulose acetate reverse osmosis membranes has raised new and important questions with regard to the dense or “active” layer of these membranes. Several thickness values and structures have been attributed to the dense layer. To ensure the correct interpretation of the cellulose acetate structure thirteen different preparative techniques have been used in this investigation. These thirteen methods included various combinations of water substitution, freeze drying, freeze sectioning, fracturing, embedding, and microtomy techniques with both transmission and scanning electron microscope observations.It was observed that several factors can cause a distortion of the structure during sample preparation. The most obvious problem of water removal can cause swelling, shrinking, and folds. Improper removal of embedding materials, when used, can cause a loss of electron image contrast and, or structure which could hinder interpretation.

Novel Magnetic Resonance Measurements of Fouling in Operating Spiral Wound Reverse Osmosis Membrane Modules

2021 ◽  
Vol 196 ◽  
pp. 117006 ◽  
Author(s):  
Nicholas W. Bristow ◽  
Sarah J. Vogt ◽  
Szilard S. Bucs ◽  
Johannes S. Vrouwenvelder ◽  
Michael L. Johns ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Reverse Osmosis ◽  
Reverse Osmosis Membrane ◽  
Membrane Modules ◽  
Spiral Wound
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