scholarly journals Integrity of reverse osmosis membrane for removing bacteria: new insight into bacterial passage

2019 ◽  
Vol 5 (2) ◽  
pp. 239-245 ◽  
Author(s):  
Takahiro Fujioka ◽  
Anh T. Hoang ◽  
Tetsuro Ueyama ◽  
Long D. Nghiem
Keyword(s):  
Reverse Osmosis ◽  
Reverse Osmosis Membrane ◽  
Membrane Element ◽  
Fluorescent Microspheres ◽  
Ring Seal ◽  
Insight Into

Fluorescent microspheres (surrogates for bacteria) allowed identification of the fact that even an intact O-ring seal can allow for some bacterial passage through the reverse osmosis membrane element.

High-temperature reverse osmosis membrane element

Desalination ◽  
1988 ◽  
Vol 70 (1-3) ◽  
pp. 65-76 ◽  
Author(s):  
H.C. Chu ◽  
J.S. Campbell ◽  
W.G. Light
Keyword(s):  
High Temperature ◽  
Reverse Osmosis ◽  
Reverse Osmosis Membrane ◽  
Membrane Element

Reverse osmosis membrane element integrity evaluation using imperfection model

Desalination ◽  
2020 ◽  
Vol 476 ◽  
pp. 114175
Author(s):  
Claudia Niewersch ◽  
Christopher Rieth ◽  
Leaelaf Hailemariam ◽  
Guillem Gilabert Oriol ◽  
Justyna Warczok
Keyword(s):  
Reverse Osmosis ◽  
Reverse Osmosis Membrane ◽  
Membrane Element

The FT-30 seawater reverse osmosis membrane--element test results

Desalination ◽  
1981 ◽  
Vol 38 ◽  
pp. 473-483 ◽  
Author(s):  
R.E. Larson ◽  
J.E. Cadotte ◽  
R.J. Petersen
Keyword(s):  
Reverse Osmosis ◽  
Reverse Osmosis Membrane ◽  
Test Results ◽  
Membrane Element ◽  
Seawater Reverse Osmosis

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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