scholarly journals High-flux polyamide reverse osmosis membranes by surface grafting 4-(2-hydroxyethyl)morpholine

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 40705-40710 ◽  
Author(s):  
Ruizhi Pang ◽  
Kaisong Zhang
Keyword(s):  
Reverse Osmosis ◽  
Water Flux ◽  
Surface Grafting ◽  
High Flux ◽  
Ro Membrane ◽  
Reverse Osmosis Membranes

A surface grafted PA RO membrane with 4-(2-hydroxyethyl)morpholine was fabricated to improve water flux.

Zwitterionic and hydrophilic polyelectrolyte/metal ion anti-fouling layers via covalent and coordination bonds for reverse osmosis membranes

2021 ◽  
Author(s):  
Mengying Jiang ◽  
Li-Ye Chen ◽  
Qian Zou ◽  
Siwei Xiong ◽  
Peigen Fu ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Metal Ion ◽  
Sewage Treatment ◽  
Membrane Technology ◽  
Seawater Desalination ◽  
Ro Membrane ◽  
Coordination Bonds ◽  
Reverse Osmosis Membranes

Reverse osmosis (RO) membrane technology, as an effective and eco-friendly method, has been widely used for seawater desalination and sewage treatment. However, RO membranes inevitably suffer serious organic and biological...

Highly porous carbon nanotube/polysulfone nanocomposite supports for high-flux polyamide reverse osmosis membranes

2017 ◽  
Vol 539 ◽  
pp. 441-450 ◽  
Author(s):  
Tae Hoon Lee ◽  
Min Yong Lee ◽  
Hee Dae Lee ◽  
Ji Soo Roh ◽  
Hyo Won Kim ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Reverse Osmosis ◽  
Porous Carbon ◽  
High Flux ◽  
Highly Porous ◽  
Reverse Osmosis Membranes

Using reverse osmosis membranes to control ion transport during water electrolysis

2020 ◽  
Vol 13 (9) ◽  
pp. 3138-3148
Author(s):  
Le Shi ◽  
Ruggero Rossi ◽  
Moon Son ◽  
Derek M. Hall ◽  
Michael A. Hickner ◽  
...  
Keyword(s):  
Ion Transport ◽  
Reverse Osmosis ◽  
Water Electrolysis ◽  
Gas Evolution ◽  
Salt Ions ◽  
Chlorine Gas ◽  
Ro Membrane ◽  
Reverse Osmosis Membranes

A relatively inexpensive commercially available RO membrane was shown to be useful for direct seawater H2 generation as the membrane can selectively transport protons and hydroxide ions over other salt ions, and keep the inert anolyte contained to avoid chlorine gas evolution.

Low-Fouling Antibacterial Reverse Osmosis Membranes via Surface Grafting of Graphene Oxide

2016 ◽  
Vol 8 (23) ◽  
pp. 14334-14338 ◽  
Author(s):  
Xinwei Huang ◽  
Kristofer L. Marsh ◽  
Brian T. McVerry ◽  
Eric M. V. Hoek ◽  
Richard B. Kaner
Keyword(s):  
Graphene Oxide ◽  
Reverse Osmosis ◽  
Surface Grafting ◽  
Reverse Osmosis Membranes

Separation of Acetic Acid and Water Using Reverse Osmosis Membranes

2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Nora Jullok ◽  
Boo Chie Hang
Keyword(s):  
Acetic Acid ◽  
Reverse Osmosis ◽  
Interfacial Polymerization ◽  
Polymer Concentration ◽  
Water Flux ◽  
Porous Support ◽  
Water Permeation ◽  
Membrane Matrix ◽  
Membrane Porosity ◽  
Reverse Osmosis Membranes

Reverse osmosis can potentially be used for separation of acetic acid from waste stream. However, the investigation on the separation of this binary mixture utilizing reverse osmosis is scarce. Thus, this study aims to evaluate the feasibility of lab-synthesized and commercially available reverse osmosis membranes to separate low acetic acid concentration from aqueous mixture. A commercially available AG membrane and three laboratory synthesized polysulfone (PSf) membranes were used in this work. Initial test for water permeation using dead end filtration found that 17.5 wt% PSf has the highest water permeability. As the polymer concentration decreases, the membrane porosity increases which decreases the resistance which enables the penetration of the permeant more easily through the membrane matrix resulting in higher water permeation when 17.5wt% PSf was used. Further modification by interfacial polymerization to form a thin polyamide layer on the porous support was seen to have had improved the membrane affinity towards water resulted in increased of permeation through the membrane matrix. However, the rejection was lower than that of the AG membrane. This indicates that, the increase in water permeation when 17.5wt%PSf was used is due to the high membrane porosity. This is evidence since 17.5wt%PSf has the highest water flux but lower acetic acid rejection compared to the commercial AG membrane. Low rejection of acetic acid when reverse osmosis membrane was applied indicates that other factor such as Donnan effect has to be further considered when synthesizing the membrane.

High-flux reverse osmosis membranes incorporated with NaY zeolite nanoparticles for brackish water desalination

2015 ◽  
Vol 476 ◽  
pp. 373-383 ◽  
Author(s):  
Hang Dong ◽  
Lin Zhao ◽  
Lin Zhang ◽  
Huanlin Chen ◽  
Congjie Gao ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Brackish Water ◽  
Water Desalination ◽  
High Flux ◽  
Nay Zeolite ◽  
Reverse Osmosis Membranes
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