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Graphene-Based Ultrafiltration Membranes for Separation: Synthesis and Applications

[ Vol. 12 , Issue. 1 ]

Author(s):

Xu Zhang, Zehai Xu, Ling Wang, Xinyan Wang, Yong Zeng and Guoliang Zhang*   Pages 37 - 45 ( 9 )

Abstract:


Background: Water treatment, important for maintaining clean water among other applications, is still a challenge to improve remediation technologies for eliminating pollution. Ultrafiltration, as one kind of membrane separation processes which play a vital role in water treatment, has been attracted extensive attention for its merits of high-efficiency, low-cost and energy-saving. However, some drawbacks still restrict the application, including poor hydrophilicity, low permeability and severe membrane fouling. Thus, improving the performances of the ultrafiltration membrane is urgently required.

Methods: This paper reviews recent literatures and patents on the synthesis and applications of graphene-based ultrafiltration membranes. The goal in this work is to provide deep insight into the selection of graphene-based materials, structural design and methods of graphene-based mixed-matrix membranes (MMMs) and the substrate supported graphene-based membranes.

Results: Various drawbacks in traditional ultrafiltration membranes such as obvious protein adsorption, severe membrane fouling and poor hydrophilicity can be reduced through incorporating graphene-based nanomaterials into polymer membranes. It is confirmed by putting forward to some applications in water purification, antibacterial membranes, membrane bioreactors and protein separation.

Conclusion: Graphene-based materials introduced into membrane materials have shown that they can effectively increase the permeability, antifouling and antibacterial properties of membranes. In this review, we anticipate to provide a useful insight into the design and synthesis of graphene-based ultrafiltration membranes, and hope that a new avenue can be opened to develop high quality ultrafiltration membranes in separation process.

Keywords:

Graphene-based materials, ultrafiltration, membrane separation, water treatment, antibacterial efficiency, pollution.

Affiliation:

Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, Hangzhou Special Equipments Inspection Institute, Hangzhou 310003, Shandong Zhaojin Motian Co., Ltd, Zhaoyuan 265400, Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014

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