In Situ Assembly of Polyamide/Fe(BTC) Nanocomposite Reverse Osmosis Membrane Assisted by Fe3+–Polyphenolic Complex for Desalination

2021 ◽  
Author(s):  
Xu Zhang ◽  
Yong Zeng ◽  
Chong Shen ◽  
Zixuan Fan ◽  
Qin Meng ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Reverse Osmosis Membrane

Surface immobilization of chlorhexidine on a reverse osmosis membrane for in-situ biofouling control

2019 ◽  
Vol 576 ◽  
pp. 17-25 ◽  
Author(s):  
Taek-Seung Kim ◽  
Sang-Hee Park ◽  
Daeseon Park ◽  
Jung-Hyun Lee ◽  
Seoktae Kang
Keyword(s):  
Reverse Osmosis ◽  
Reverse Osmosis Membrane ◽  
Surface Immobilization ◽  
Biofouling Control

In situ modification of polyamide reverse osmosis membrane module for improved fouling resistance

2019 ◽  
Vol 141 ◽  
pp. 402-412 ◽  
Author(s):  
Meihong Liu ◽  
Chuang Yu ◽  
Yiyang Wu ◽  
Zhenhua Lü ◽  
Sanchuan Yu ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Membrane Module ◽  
Reverse Osmosis Membrane ◽  
Fouling Resistance ◽  
In Situ Modification

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.

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