Zeolitic imidazolate framework-67/carboxylated graphene oxide nanosheets incorporated polyethersulfone hollow fiber membranes for removal of toxic heavy metals from contaminated water

2020 ◽  
Vol 249 ◽  
pp. 117160 ◽  
Author(s):  
Akshay Modi ◽  
Jayesh Bellare
Keyword(s):  
Heavy Metals ◽  
Graphene Oxide ◽  
Hollow Fiber ◽  
Contaminated Water ◽  
Hollow Fiber Membranes ◽  
Graphene Oxide Nanosheets ◽  
Toxic Heavy Metals ◽  
Zeolitic Imidazolate Framework ◽  
Fiber Membranes

Development of a Polymeric Carbon Nanocomposite Hollow-Fiber Membrane for Wastewater Treatment

2021 ◽  
Vol 21 (7) ◽  
pp. 3711-3715
Author(s):  
Jeongdong Choi ◽  
Eun-Sik Kim
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Permeate Flux ◽  
Fiber Membranes ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Polymeric Carbon ◽  
Carbon Nanocomposite

This study investigated experimental parameters to fabricate polymeric carbon nanocomposite hollow-fiber membranes with graphene oxide and multi-walled carbon nanotubes. This case was different from that of flat-sheet type membranes in that the characteristics of the hollow-fiber type membranes were affected by the structure of the spinneret, the flow rate of the injected polymer and draw solution, and the mixing ratio. The membranes were characterized in terms of mechanical strength, porosity, hydrophilicity, and permeate flux using different solutions. The results reveal a mechanical strength of the carbon nanocomposite hollow-fiber membranes that is about 47.8% higher than that of hollow-fiber membranes without carbon nanomaterials. The porosity and surface hydrophilicity changed to produce more applicable membranes for water and wastewater treatment. As for the permeate flux, the nanocomposite membrane with graphene oxide showed a higher flux compared to the multi-walled carbon nanotubes membrane, which could be influenced by structural effects of the carbon materials.

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