A novel reduced graphene oxide/carbon nanotube hollow fiber membrane with high forward osmosis performance

Desalination ◽  
2019 ◽  
Vol 451 ◽  
pp. 117-124 ◽  
Author(s):  
Xinfei Fan ◽  
Yanming Liu ◽  
Xie Quan
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Forward Osmosis ◽  
Fiber Membrane ◽  
Reduced Graphene

Fabrication of nanocomposite forward osmosis hollow fiber membrane for low reverse salt flux by modification of active layer via co-extrusion with graphene oxide

2020 ◽  
Vol 183 ◽  
pp. 121-130
Author(s):  
Kyunghoon Jang ◽  
Joohwan Lim ◽  
Jangho Lee ◽  
Abayomi Babatunde Alayande ◽  
Bumsuk Jung ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Active Layer ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Forward Osmosis ◽  
Salt Flux ◽  
Fiber Membrane ◽  
Reverse Salt Flux

Developing a HEC/CMC-Reduced Graphene Oxide Hydrogel Nanocomposite for Seawater Desalination

2021 ◽  
Vol 324 ◽  
pp. 173-178
Author(s):  
Terence Tumolva ◽  
Kenneth Carmelo Madamba ◽  
Isabelle Gabrielle Nunag ◽  
Vinz Gabriel Villanueva
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Forward Osmosis ◽  
Antimicrobial Properties ◽  
Water Desalination ◽  
Small Scale ◽  
Cellulose Derivatives ◽  
Permeable Membrane ◽  
Antimicrobial Efficiency ◽  
Reduced Graphene

Current available methods for water desalination are energy intensive, expensive, and not feasible for small-scale applications. As an alternative, hydrogels may be utilized as a draw agent and semi-permeable membrane forward osmosis by acting as both to desalinate water. This study aims to synthesize and characterize hydrogels made from cellulose derivatives and reduced graphene oxide nanofillers in order to desalinate and remove microbes from seawater without requiring a large energy input. The hydrogels are formed by combining carboxymethyl cellulose, hydroxymethyl cellulose, reduced graphene oxide, and water to form a paste which is soaked in a crosslinking solution made of citric acid. Swelling, compression, antimicrobial efficiency and desalination efficiency tests were done. The hydrogel that obtained the highest values has a swelling ratio of 1,447%, compressive strength of 4 bar, desalination efficiency of 30%, and antimicrobial properties.

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