Document 11143176

advertisement
Graphene-­‐polymer hybrid membrane Monash researchers have fabricated high-­‐performance PVDF/GO hybrid membranes which exhibit 4-­‐5 /mes higher membrane flux and without comprising membrane rejec/on performance. The membranes will significantly reduce required membrane area and opera/on cost. PVDF PVDF/GO Technology Applica/ons GO nanosheets were embedded PVDF membrane matrix as nanofillers. The GO nanosheets not only increase the hydrophobicity of membrane surface but also increase the membrane porosity due to faster exchange of solvent and non-­‐solvent during phase inversion process, which results in the increase of membrane flux. §  Drinking water purifica/on. This membrane can high efficient removal of bacteria and viruses. §  Wastewater treatment. This membrane can remove majority of dissolved organic pollutants. §  Liquid separa/on in food and dairy industry Advantages IP & Key Publica/ons §  A higher water flux: increase 400-­‐500% compared with pure PVDF membrane. §  More hydrophilic: Contact angle decrease from 72.6°to 66.6°. §  Higher membrane rejec@on: membrane rejec/on increase from 92% to 97.4%. N. Meng, Z. Wang, Z. Low, Y. Zhang, H. Wang, X. Zhang* Impact of trace graphene oxide in coagula/on bath on morphology and performance of polysulfone ultrafiltra/on membrane. Separa;on and Purifica;on Technology 147 (2015) 364–371 Opportunity for Collabora/on §  Large scale produc/on of the high-­‐performance PVDF/GO hybrid ultrafiltra/on membranes. Key Contact A/Prof Xiwang Zhang Department of Chemical Engineering Monash University Tel: +61 3 9905 1867 Email: xiwang.zhang@monash.edu 
Download