High Performance Ultrafiltration Membranes Prepared by the Application of Modified Microwave Irradiation Technique

2011 ◽  
Vol 50 (4) ◽  
pp. 2272-2283 ◽  
Author(s):  
Iqbal Ahmed ◽  
Ani Idris ◽  
Mohd Yusof Noordin ◽  
Rizwan Rajput
Keyword(s):  
Microwave Irradiation ◽  
High Performance ◽  
Ultrafiltration Membranes

scholarly journals Low cost, high performance ultrafiltration membranes from glass fiber-PTFE–graphene composites

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Umar Khan ◽  
Sonia Biccai ◽  
Conor S. Boland ◽  
Jonathan N. Coleman
Keyword(s):  
Flow Rate ◽  
Glass Fibre ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Low Cost ◽  
Composite Membranes ◽  
Field Trials ◽  
Ultrafiltration Membranes ◽  
Alumina Membranes ◽  
Fibre Membrane

AbstractThe development of low-cost ultrafiltration membranes with relatively high flow rate and selectivity is an important goal which could improve access to clean water in the developing world. Here we demonstrate a method to infuse mixtures of graphene nanosheets and Teflon nanoparticles into ultra-cheap glass fibre membranes. Annealing the resultant composites leads to coalescence of the Teflon, resulting in very stable membranes with significantly enhanced mechanical properties. In filtration tests, while adding ~ 10 wt% graphene/Teflon to the glass fibre membrane decreased the flow rate by × 100, the selectivity improved by × 103 compared to the neat glass fibre membrane. This combination of selectively and flow rate was significantly better than any commercial membrane tested under similar circumstances. We found these membranes could remove > 99.99% of 25–250 nm diameter SiC nanoparticles dispersed in ethanol, transmitting only particles with diameters < 40 nm, performance which is superior to commercial alumina membranes. Field trials on dirty canal water showed these composite membranes to remove aluminium to a level × 10 below the EU limit for drinking water and reduce iron and bacteria contents to below detectable levels.

Reinforcement of nanostructured reduced graphene oxide: a facile approach to develop high-performance nanocomposite ultrafiltration membranes minimizing the trade-off between flux and selectivity

RSC Advances ◽  
2015 ◽  
Vol 5 (58) ◽  
pp. 46801-46816 ◽  
Author(s):  
Avishek Pal ◽  
Soumitra Kar ◽  
A. K. Debnath ◽  
D. K. Aswal ◽  
R. C. Bindal ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Mechanical Stability ◽  
Ultrafiltration Membranes ◽  
Trade Off ◽  
Reduced Graphene ◽  
Uf Membranes

In situ impregnation of nanostructured reduced graphene oxide (nRGO) in Ps matrix leads to Ps–nRGO composite UF membranes with promising attributes such as improved flux, optimum selectivity along with reasonable thermal and mechanical stability.

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